Yamaha TZ125M1 Service Manual

4JT-28199-16LIT-11626-13-42OWNER’S SERVICE MANUALTZ125M1/(M)

EC085002ILLUSTRATED SYMBOLS(Refer to the illustration)Illustrated symbols 1 to 7 are designed asthumb tabs to indicate the chapter’s numberand conten

CARBURETOR AND REED VALVE4-12EC465000ASSEMBLY AND INSTALLATIONEC465140Reed valve1. Install:• Reed valve 1 1• Reed valve 2 2• Stopper (reed valve) 3• S

CARBURETOR AND REED VALVE4-13ENG2. Install:• O-ring 1• Solenoid valve 2• Clamp 3• Screw (clamp) 4To carburetor 5.CCCAUTION:• Before installing the sol

9. Install:• Jet needle 1• Collar 2• Spring 3• Needle holder 4To throttle valve 5.CARBURETOR AND REED VALVE4-146. Install:• Needle valve 1• Float 2• F

CARBURETOR AND REED VALVE4-1510.Install:• Throttle cable 1• Mixing chamber top 2• Spring (throttle valve) 3• Ring 4• Throttle valve 5NOTE:• While comp

CARBURETOR AND REED VALVE4-163. Tighten:• Clamp (carburetor joint) 1T2 Nm (0.2 mdkg, 1.4 ftdlb)4. Connect:• Solenoid valve lead 1Refer to “CABLE ROUTI

CYLINDER HEAD, CYLINDER AND PISTON4-17ENGEC470000CYLINDER HEAD, CYLINDER AND PISTONEC478000CYLINDER HEAD AND CYLINDERExtend of removal: 1 Cylinder hea

CYLINDER HEAD, CYLINDER AND PISTON4-18ENGEC478200PISTONExtend of removal: 1 Piston and piston ring removalExtend of removal Order Part name Q’ty Remar

CYLINDER HEAD, CYLINDER AND PISTON4-19EC473000REMOVAL POINTSEC473400Piston and piston ring1. Remove:• Piston pin clip 1NOTE:Before removing the piston

CYLINDER HEAD, CYLINDER AND PISTON4-202. Inspect:• Cylinder head water jacketCrust of minerals/Rust ≥ Remove.• Cylinder head contact surfaceWear/Damag

CYLINDER HEAD, CYLINDER AND PISTON4-21Repairing steps:• Remove the piston ring.• Chamfer the piston ring groove at its edgea where the piston ring ten

MEMO

CYLINDER HEAD, CYLINDER AND PISTON4-222. Measure:• Piston pin outside diameterUse micrometer 1.Out of limit ≥ Replace.Piston pin outside diameter:Stan

CYLINDER HEAD, CYLINDER AND PISTON4-23EC474520Piston ring1. Install:• Piston ringInto the cylinder.Push the ring with the piston crown.2. Measure:• En

CYLINDER HEAD, CYLINDER AND PISTON4-242. Check:• Piston mark aPiston mark aa(color)A (red)B (orange)C (green)*3. Combination:Combine the piston and cy

CYLINDER HEAD, CYLINDER AND PISTON4-253. Install:• Piston 1• Piston pin 2• Piston pin clip 3NNOTE:• The arrow a on the piston dome must pointto exhaus

CYLINDER HEAD, CYLINDER AND PISTON4-264. Install:• O-ring 1N• Dowel pin 2NOTE:Apply the lithium soap base grease on the O-rings.5. Install:• Cylinder

CLUTCH4-27ENGEC4A0000CLUTCHEC4A8000CLUTCH PLATE AND FRICTION PLATEExtend of removal: 1 Clutch plate and friction plate removalExtend of removal Order

CLUTCH4-28ENGEC4A8100CLUTCH HOUSING AND PUSH LEVER AXLEExtend of removal: 1 Clutch housing removal 2 Push lever axle removalExtend of removal Order Pa

CLUTCH4-29EC4A3000REMOVAL POINTSEC483211Clutch boss1. Remove:• Nut 1• Lock washer 2• Clutch boss 3NOTE:Straighten the lock washer tab and use theclutc

CLUTCH4-30EC484500Friction plate1. Measure:• Friction plate thicknessOut of specification ≥ Replace frictionplate as a set.Measure at all four points.

CLUTCH4-31EC4A5000ASSEMBLY AND INSTALLATIONEC4A5101Push lever axle1. Install:• Seat plate 1• Torsion spring 2• Push lever axle 3NOTE:Apply the lithium

EC090000INDEXGENERAL INFORMATIONGENINFO1TUNINGTUN7CHASSISCHAS5ELECTRICALELEC6ENGINEENG4REGULAR INSPECTION AND ADJUSTMENTSINSPADJ3SPECIFICATIONSPEC2

CLUTCH4-323. Install:• O-ring 1N• Spacer 2 2To clutch housing 3.NOTE:• Apply the lithium soap base grease on the O-ring and oil seal lip.• When instal

CLUTCH4-336. Bend the lock washer 1 tab.7. Install:• Friction plate{yellow [d=ø95 mm (3.7 in)]} 1• Clutch plate 2• Friction plate{brown [d=ø100mm (3.9

CLUTCH4-349. Install:• Pressure plate 1NOTE:Align the punch mark a on the pressure platewith the punch mark b on the clutch boss.10.Install:• Clutch s

PRIMARY DRIVEN GEAR, PRIMARY DRIVE GEAR AND BALANCER SHAFT4-35ENGEC4D0002PRIMARY DRIVEN GEAR, PRIMARY DRIVE GEAR AND BALANCER SHAFTEC4D8000PRIMARY DRI

PRIMARY DRIVEN GEAR, PRIMARY DRIVE GEAR AND BALANCER SHAFTENGEC4D8100PRIMARY DRIVE GEAR AND BALANCER SHAFTExtend of removal: 1 Primary drive gear remo

PRIMARY DRIVEN GEAR, PRIMARY DRIVE GEAR AND BALANCER SHAFT4-37EC4D3000REMOVAL POINTSEC4D3101Primary drive gear and balancer weightgear1. Loosen:• Bolt

PRIMARY DRIVEN GEAR, PRIMARY DRIVE GEAR AND BALANCER SHAFT4-38EC4D4000INSPECTIONEC484300Primary drive gear and primary driven gear1. Inspect:• Primary

PRIMARY DRIVEN GEAR, PRIMARY DRIVE GEAR AND BALANCER SHAFT4-392. Install:• Gasket [crankcase cover (left)]N• Crankcase cover (left) 1• Screw [crankcas

PRIMARY DRIVEN GEAR, PRIMARY DRIVE GEAR AND BALANCER SHAFT4-406. Install:• Lock washer 1N• Nut (balancer weight gear) 2• Primary drive gear 3• Plain w

PRIMARY DRIVEN GEAR, PRIMARY DRIVE GEAR AND BALANCER SHAFT4-412. Install:• Dowel pin 1• Gasket [crankcase cover (right)] 2N• Thrust plate 3NOTE:Instal

EC0A0000CONTENTSCHAPTER 1GENERAL INFORMATIONDESCRIPTION. . . . . . . . . . . . . . . . . . . . . 1-1MACHINE IDENTIFICATION . . . . . . . . . . 1-2IMPO

SHIFT SHAFT AND OIL PUMP4-42ENGEC4E0000SHIFT SHAFT AND OIL PUMPEC4E8000SHIFT SHAFTT22 Nm (2.2 mdkg, 16 ftdlb)T11 Nm (1.1 mdkg, 8.0 ftdlb)T14 Nm (1.4 m

SHIFT SHAFT AND OIL PUMP4-43ENGEC4E8100OIL PUMPExtend of removal: 1 Oil pump removal and disassembly 2 Strainer removalExtend of removal Order Part na

SHIFT SHAFT AND OIL PUMP4-44EC4E4000INSPECTIONEC4B4400Shift shaft1. Inspect:• Shift shaft 1Bend/Damage ≥ Replace.• Spring 2Broken ≥ Replace.EC4E4100St

SHIFT SHAFT AND OIL PUMP4-45EC4E5000ASSEMBLY AND INSTALLATIONEC4E5101Strainer1. Install:• Strainer 1 1• Strainer 2 2NOTE:• Each strainer is installed

SHIFT SHAFT AND OIL PUMP4-464. Install:• Gasket (oil pump) 1NNOTE:Install the gasket in accordance with theshapes of the oil passages a.5. Install:• O

SHIFT SHAFT AND OIL PUMP4-47EC4B5111Stopper lever1. Install:• Torsion spring 1• Stopper lever 2• Bolt (stopper lever) 3GT11 Nm (1.1 mdkg, 8.0 ftdlb)NO

TRANSMISSION, SHIFT CAM AND SHIFT FORK4-48ENGEC4H0000TRANSMISSION, SHIFT CAM AND SHIFT FORKExtend of removal Order Part name Q’ty RemarksTRANSMISSION,

TRANSMISSION, SHIFT CAM AND SHIFT FORK4-49ENGExtend of removal: 1 Oil delivery pipe removal 2 Shift cam and shift fork removal3 Main axle and drive ax

TRANSMISSION, SHIFT CAM AND SHIFT FORK4-50EC4H3000REMOVAL POINTSEC4F3100Drive sprocket1. Remove:• Nut (drive sprocket) 1• Lock washer 2NOTE:• Straight

TRANSMISSION, SHIFT CAM AND SHIFT FORK4-51EC4H3300Shift cam1. Remove:• Bearing plate cover 12. Remove:• Shift cam 1NOTE:Turn the segment 2 to the posi

CHAPTER 4ENGINECOWLING, SEAT AND FUEL TANK . . . . 4-1EXHAUST PIPE AND SILENCER . . . . . . 4-3RADIATOR . . . . . . . . . . . . . . . . . . . . . . .

TRANSMISSION, SHIFT CAM AND SHIFT FORK4-52EC4H4300Shift fork groove1. Measure:• 3rd/4th pinion gear 1• 5th wheel gear 2• 6th wheel gear 3• Shift fork

TRANSMISSION, SHIFT CAM AND SHIFT FORK4-533. Check:• Shift fork movementOn its guide bar.Unsmooth operation ≥ Replace shift forkand/or guide bar.NOTE:

TRANSMISSION, SHIFT CAM AND SHIFT FORK4-542. Install:• 2nd wheel gear (31 T) 1• 5th wheel gear (24 T) 2• 4th wheel gear (25 T) 3• 3rd wheel gear (24 T

TRANSMISSION, SHIFT CAM AND SHIFT FORK4-553. Install:• Plain washer 1• Circlip 2NNOTE:• Be sure the circlip sharp-edged corner a ispositioned opposite

TRANSMISSION, SHIFT CAM AND SHIFT FORK4-567. Check:• Shift operation• Transmission operationUnsmooth operation ≥ Repair.8. Install:• O-ring 1NTo oil d

TRANSMISSION, SHIFT CAM AND SHIFT FORK4-57EC4F5500Drive sprocket1. Install:• Drive sprocket 1• Drive chain 2NOTE:• Install the drive sprocket with its

CDI MAGNETOENGEC4L0000CDI MAGNETOExtend of removal: 1 CDI magneto removalExtend of removal Order Part name Q’ty RemarksCDI MAGNETO REMOVALPreparation

CDI MAGNETO4-59EC4L3000REMOVAL POINTSEC4L3101Rotor1. Remove:• Nut (rotor) 1• Plain washer 2Use the rotor holding tool 3.Rotor holding tool:YU-01235/90

CDI MAGNETO4-602. Install:• Woodruff key 1• Rotor 2NOTE:• Clean the tapered portions of the crankshaftand rotor.• When installing the woodruff key, ma

ENGINE REMOVAL4-61ENGEC4M0000ENGINE REMOVALExtend of removal Order Part name Q’ty RemarksENGINE REMOVALPreparation for Hold the machine by placing re

DESCRIPTION1-1NOTE:• The machine you have purchased may differslightly from those shown in the following.• Designs and specifications are subject toch

ENGINE REMOVAL4-62ENGExtend of removal: 1 Engine removalExtend of removal Order Part name Q’ty Remarks1Pinch bolt (engine mounting collar)2 Only loose

ENGINE REMOVAL4-63EC4M3000REMOVAL POINTSEC4M3331Engine removal1. Loosen:• Engine mounting adjust bolt 1NOTE:Use the adjust bolt wrench 2 to loosen the

ENGINE REMOVAL4-644. Install:• Nut (engine mounting bolt) (upper) 1T30 Nm (3.0 mdkg, 22 ftdlb)• Nut (engine mounting bolt) (lower) 2T30 Nm (3.0 mdkg,

CRANKCASE, CRANKSHAFT AND WATER PUMP4-65ENGEC4Q0000CRANKCASE, CRANKSHAFT AND WATER PUMPExtend of removal Order Part name Q’ty RemarksCRANKCASE AND CRA

CRANKCASE, CRANKSHAFT AND WATER PUMP4-66ENGExtend of removal: 1 Crankcase separation 2 Crankshaft removal3 Crankshaft bearing removal 4 Impeller shaft

CRANKCASE, CRANKSHAFT AND WATER PUMP4-67EC4Q3000REMOVAL POINTSEC4Q3100Crankcase1. Remove:• Holder 1• Blind plug 22. Remove:• Crankcase (right) 1Use th

CRANKCASE, CRANKSHAFT AND WATER PUMP4-68EC4N3401Crankshaft bearing1. Remove:• Bearing 1NOTE:• Remove the bearing from the crankcase bypressing its inn

CRANKCASE, CRANKSHAFT AND WATER PUMP4-693. Inspect:• Oil seal 1Damage ≥ Replace.EC4N4201Crankshaft1. Measure:• Runout limit a• Small end free play lim

CRANKCASE, CRANKSHAFT AND WATER PUMP4-70EC4Q5000ASSEMBLY AND INSTALLATIONEC4Q5101Oil seal (impeller shaft)1. Install:• Oil seal 1NTo crankcase (right)

CRANKCASE, CRANKSHAFT AND WATER PUMP4-714. Install:• Water pump housing cover 1• Copper washer 2N• Bolt (water pump housing cover) 3T11 Nm (1.1 mdkg,

MACHINE IDENTIFICATION1-2EC120001MACHINE IDENTIFICATIONThere are two significant reasons for knowingthe serial number of your machine:1. When ordering

CRANKCASE, CRANKSHAFT AND WATER PUMP4-72NOTE:• Hold the connecting rod at top dead centerwith one hand while turning the nut of theinstalling tool wit

CRANKCASE, CRANKSHAFT AND WATER PUMP4-734. Install:• Crankcase (left) 1To crankcase (right).NOTE:• Fit the crankcase (left) to the crankcase(right). T

FRONT WHEEL AND REAR WHEEL5-1EC500000CHASSISEC590000FRONT WHEEL AND REAR WHEELEC598000FRONT WHEELExtend of removal: 1 Front wheel removal 2 Wheel bear

FRONT WHEEL AND REAR WHEEL5-2EC598100REAR WHEELExtend of removal: 1 Rear wheel removal 2 Wheel bearing removal3 Brake disc removalExtend of removal Or

FRONT WHEEL AND REAR WHEEL5-3EC593000REMOVAL POINTSEC523101Rear wheel1. Remove:• Wheel 1NOTE:Push the wheel forward and remove the drivechain 2.EC5132

FRONT WHEEL AND REAR WHEEL5-4NOTE:The bending value is shown by one half of thedial gauge reading.WDo not attempt to straighten a bent axle.EC594100Br

FRONT WHEEL AND REAR WHEEL5-5EC595000ASSEMBLY AND INSTALLATIONEC515142Front wheel1. Install:• Bearing (right) 1• Spacer 2• Bearing (left) 3NOTE:• Appl

FRONT WHEEL AND REAR WHEEL5-65. Install:• Wheel axle 1NOTE:• Apply the lithium soap base grease on thewheel axle.• Insert the wheel axle from right si

FRONT WHEEL AND REAR WHEEL5-72. Install:• Brake disc 1• Bolt (brake disc) 2GT23 Nm (2.3 mdkg, 17 ftdlb)NOTE:Tighten the bolts in stage, using a crissc

FRONT WHEEL AND REAR WHEEL5-87. Install:• Drive chain 1NOTE:Push the wheel 2 forward and install the drivechain.8. Install:• Wheel axle 1NOTE:• Apply

IMPORTANT INFORMATION1-3EC130000IMPORTANT INFORMATIONEC131002PREPARATION FOR REMOVAL AND DISAS-SEMBLY1. Remove all dirt, mud, dust, and foreignmateria

Extend of removal Order Part name Q’ty RemarksFRONT BRAKE REMOVALPreparation for Hold the machine by placing removal the suitable stand.Cowling Refer

FRONT BRAKE AND REAR BRAKE5-10EC5A8100REAR BRAKEExtend of removal: 1 Brake hose removal 2 Caliper removal3 Master cylinder removalExtend of removal Or

FRONT BRAKE AND REAR BRAKE5-11EC5A8200CALIPER DISASSEMBLYA FrontB RearExtend of removal: 1 Front caliper disassembly 2 Rear caliper disassemblyExtend

FRONT BRAKE AND REAR BRAKE5-12EC5A8300MASTER CYLINDER DISASSEMBLYA FrontB RearExtend of removal: 1 Front master cylinder disassembly 2 Rear master cyl

FRONT BRAKE AND REAR BRAKE5-13EC536000HANDLING NOTEWThe brake components of this machine aresuit for closed circuit use only. Never useon any public r

FRONT BRAKE AND REAR BRAKE5-14EC533301Caliper piston1. Remove:• Caliper pistonUse compressed air and proceed carefully.W• Cover piston with rag and us

FRONT BRAKE AND REAR BRAKE5-15EC5A4000INSPECTIONEC534112Master cylinder1. Inspect:• Master cylinder inner surface aWear/Scratches ≥ Replace master cy

FRONT BRAKE AND REAR BRAKE5-162. Inspect:• Caliper piston 1Wear/Score marks ≥ Replace caliper pis-ton assembly.WReplace the piston seals and dust seal

FRONT BRAKE AND REAR BRAKE5-173. Install:• Caliper piston 1NOTE:Apply the brake fluid on the piston wall.CCCAUTION:• Install the piston with its shall

FRONT BRAKE AND REAR BRAKE5-182. Install:• Caliper 1• Bolt (caliper) 2T23 Nm (2.3 mdkg, 17 ftdlb)3. Tighten:• Pad pin 3T18 Nm (1.8 mdkg, 13 ftdlb)EC5A

IMPORTANT INFORMATION1-4EC132000ALL REPLACEMENT PARTS1. We recommend to use Yamaha genuineparts for all replacements. Use oil and/orgrease recommended

FRONT BRAKE AND REAR BRAKE5-193. Install:[Front]• Spring 1To master cylinder cup (secondary) 2.[Rear]• Spring 1To master cylinder piston 2.NOTE:Instal

FRONT BRAKE AND REAR BRAKE5-202. Install:• Master cylinder 1• Master cylinder bracket 2• Bolt (master cylinder bracket) 3T8 Nm (0.8 mdkg, 5.8 ftdlb)NO

FRONT BRAKE AND REAR BRAKE5-213. Install:• Brake pedal 1• Brake pedal connecting bolt 2• Nut (brake pedal connecting bolt) 3T12 Nm (1.2 mdkg, 8.7 ftdl

FRONT BRAKE AND REAR BRAKE5-224. Install:• Clamp 1Refer to “CABLE ROUTING DIAGRAM”section in the CHAPTER 2.EC545442Rear brake hose1. Install:• Copper

FRONT BRAKE AND REAR BRAKE5-233. Install:• Brake hose holder 1• Bolt (brake hose holder) 2T8Nm (0.8 mdkg,5.8 ftdlb)4. Install:• Brake hose 1NOTE:Clamp

FRONT BRAKE AND REAR BRAKE5-242. Air bleed:• Brake systemRefer to “BRAKE SYSTEM AIR BLEED-ING” section in the CHAPTER 3.3. Inspect:• Brake fluid level

FRONT FORK5-25EC550000FRONT FORKExtend of removal: 1 Front fork removalExtend of removal Order Part name Q’ty RemarksFRONT FORK REMOVALPreparation for

FRONT FORK5-26EC558000FRONT FORK DISASSEMBLYExtend of removal: 1 Oil seal removal 2 Damper rod removalExtend of removal Order Part name Q’ty RemarksFR

FRONT FORK5-27EC556000HANDLING NOTENOTE:The front fork requires careful attention. So it isrecommended that the front fork be maintainedat the dealers

FRONT FORK5-283. Remove:• Cap bolt 1NOTE:• While pressing down the spacer 3 with thefork spring compressor 2, set the rod holder5 between the locknut

CHECKING OF CONNECTION1-5EC1C0001CHECKING OF CONNECTIONDealing with stains, rust, moisture, etc. on theconnector.1. Disconnect:• Connector2. Dry each

FRONT FORK5-29EC553321Damper rod1. Remove:• Locknut 12. Remove:• Bolt (damper rod) 1• Damper rod 2NOTE:Use a damper rod holder 3 to lock the damperrod

FRONT FORK5-30EC554502Inner tube1. Inspect:• Inner tube surface aScore marks ≥ Repair or replace.Use #1,000 grit wet sandpaper.Damaged oil lock piece

FRONT FORK5-31EC555000ASSEMBLY AND INSTALLATIONEC5551C0Front fork assembly1. Wash the all parts in a clear solvent.2. Install:• Damper rod 1To inner t

FRONT FORK5-326. Install:• Stopper ring 1• Oil seal 2N• Oil seal washer 3To inner tube 4.NOTE:• Apply the fork oil on the inner tube.• When installing

FRONT FORK10.Install:• Stopper ring 1NOTE:Fit the stopper ring correctly in the groove inthe outer tube.11.Check:• Inner tube smooth movementTightness

FRONT FORK5-3415.Fill:• Front fork oilUntil outer tube top surface with recom-mended fork oil once more.16.After filling, pump the outer tube 1 slowly

FRONT FORK5-3519.Install:• Fork spring 1• Spacer guide 2• Spacer 3NOTE:Install the fork spring with its smaller dia. por-tion upward.20.Attach:• Rod p

FRONT FORK5-36NOTE:Record the set position of the adjuster (theamount of turning in the adjuster to the fullyturned in position) before adjusting it.C

FRONT FORK5-3726.Install:• Cap bolt 1To outer tube.NOTE:Temporarily tighten the cap bolt.EC555263Installation1. Install:• Front fork 1• Steering dampe

FRONT FORK5-384. Tighten:• Pinch bolt (handle crown) 1T15 Nm (1.5 mdkg, 11 ftdlb)• Pinch bolt (under bracket) 2T20 Nm (2.0 mdkg, 14 ftdlb)• Pinch bolt

TZ125M1/(M)OWNER’S SERVICE MANUAL©1999 by Yamaha Motor Corporation, U.S.A.1st Edition, August 1999All rights reserved. Any reprinting or unauthorized

SPECIAL TOOLS1-6GENINFOEC140001SPECIAL TOOLSThe proper special tools are necessary for complete and accurate tune-up and assembly. Using thecorrect sp

HANDLEBAR5-39EC5B0000HANDLEBARExtend of removal: 1 Handlebar removal 2 Throttle disassemblyExtend of removal Order Part name Q’ty RemarksHANDLEBAR REM

HANDLEBAR5-40EC5B3000REMOVAL POINTSEC5B3200Grip1. Remove:• Grip 1NOTE:Blow in air between the handlebar or tubeguide and the grip. Then remove the gri

HANDLEBAR5-412. Install:• Throttle cable 1To grip cap (lower) 2.NOTE:Install the throttle cable in the grip side slit a inthe grip cap (lower).3. Inst

HANDLEBAR5-427. Install:• Master cylinder 1• Master cylinder bracket 2• Bolt (master cylinder bracket) 3T8 Nm (0.8 mdkg, 5.8 ftdlb)NOTE:• Install the

HANDLEBAR5-4311.Adjust:• Clutch lever free playRefer to “CLUTCH ADJUSTMENT” sectionin the CHAPTER 3.12.Lock the throttle cables using a lockingwire.Re

STEERING5-44EC560000STEERINGEC568000HANDLE CROWN AND STEERING DAMPERExtend of removal: 1 Handle crown removal 2 Steering damper removalExtend of remov

STEERING5-45EC568100UNDER BRACKETExtend of removal: 1 Under bracket removal 2 Bearing removalExtend of removal Order Part name Q’ty RemarksUNDER BRACK

STEERING5-46EC563000REMOVAL POINTSEC563202Ring nut1. Remove:• Ring nut 1Use the ring nut wrench 2.Ring nut wrench:YM-33975/90890-01403AWSupport the st

STEERING5-47EC564101Bearing and ball race1. Wash the bearings and ball races with asolvent.2. Inspect:• Bearing 1• Ball racePitting/Damage ≥ Replace

STEERING5-484. Install:• Under bracket 1NOTE:Apply the lithium soap base grease on thebearing.5. Install:• Ring nut 1T1 Nm (0.1 mdkg, 0.7 ftdlb)Tighte

SPECIAL TOOLS1-7GENINFOPart number Tool name / How to use IllustrationYM-33975, 90890-01403 Ring nut wrench YM-33975 90890-01403This tool is used when

STEERING5-498. Install:• Plain washer 1• Steering shaft nut 2T80 Nm (8.0 mdkg, 58 ftdlb)NOTE:Apply the lithium soap base grease on thesteering shaft n

STEERING5-5012.Adjust:• Front fork top end a• Handlebar position b• Steering damper stay position c (left sideonly)Front fork top end:18 mm (0.71 in)H

SWINGARM5-51EC570000SWINGARMExtend of removal: 1 Swingarm removal 2 Swingarm disassemblyExtend of removal Order Part name Q’ty RemarksSWINGARM REMOVAL

SWINGARM5-52EC573000REMOVAL POINTSEC573152Swingarm1. Loosen:• Pivot shaft adjust bolt 1NOTE:Loosen the pivot shaft adjust bolt using thepivot shaft wr

SWINGARM5-53EC574220Relay arm1. Inspect:• Bearing 1• Collar 2Free play exists/Unsmooth revolution/Rust≥ Replace bearing and collar as a set.EC574320Co

SWINGARM5-544. Calculate:• Swingarm side clearance “AA+ BB”Out of specification ≥ Adjust side clear-ance using shim.By using formula given below.“AA+

SWINGARM5-552. Install:• Bearing 1To relay arm.NOTE:• Apply the lithium soap base grease on thebearing when installing.• Install the bearing by pressi

SWINGARM5-564. Install:• Swingarm 1• Pivot shaft 2NOTE:• Apply the lithium soap base grease on thepivot shaft.• Insert the pivot shaft from left side.

SWINGARM5-579. Install:• Connecting rod 1• Bolt (connecting rod) 2• Nut (connecting rod) 3T34 Nm (3.4 mdkg, 24 ftdlb)NOTE:• Install the connecting rod

REAR SHOCK ABSORBER5-58EC580000REAR SHOCK ABSORBERExtend of removal: 1 Rear shock absorber removal 2 Rear shock absorber disassemblyExtend of removal

SPECIAL TOOLS1-8GENINFOPart number Tool name / How to use IllustrationACC-11001-05-01 Quick gasket®ACC-11001-05-01 90890-8550590890-85505 YAMAHA Bond

REAR SHOCK ABSORBER5-59EC586000HANDLING NOTEWThis shock absorber is provided with a sep-arate type tank filled with high-pressurenitrogen gas. To prev

REAR SHOCK ABSORBER5-60EC583000REMOVAL POINTSEC583310Bearing1. Remove:• Stopper ring 1EC584000INSPECTIONEC584110Rear shock absorber1. Inspect:• Damper

REAR SHOCK ABSORBER5-61EC585000ASSEMBLY AND INSTALLATIONEC585310Bearing1. Install:• Stopper ring 1N• Bearing 2NOTE:• Apply the lithium soap base greas

REAR SHOCK ABSORBER5-62NOTE:The length of the spring (installed) changes1.5mm (0.06 in) per turn of the adjuster.CCCAUTION:Never attempt to turn the a

REAR SHOCK ABSORBER5-635. Install:• Bolt (rear shock absorber–relay arm) 1• Nut (rear shock absorber–relay arm) 2T34 Nm (3.4 mdkg, 24 ftdlb)NOTE:Apply

ELECTRICAL COMPONENTS AND WIRING DIAGRAM6-1EC600000ELECTRICALEC610000ELECTRICAL COMPONENTS AND WIRING DIAGRAMEC611000ELECTRICAL COMPONENTSELEC1 CDI un

IGNITION SYSTEM6-2EC620000IGNITION SYSTEMEC621022INSPECTION STEPSUse the following steps for checking the possibility of the malfunctioning engine bei

IGNITION SYSTEM6-3EC622010SPARK GAP TEST1. Disconnect the spark plug cap from sparkplug.2. Connect the dynamic spark tester 1 (igni-tion checker 2) as

IGNITION SYSTEM6-4EC625002“ENGINE STOP” BUTTON INSPECTION1. Inspect:• “ENGINE STOP” button conductTester (+) lead ≥≥Black/White lead 11Tester (–) lead

IGNITION SYSTEM6-5EC627001CDI MAGNETO INSPECTION1. Inspect:• Pick-up coil resistanceOut of specification ≥ Replace.Tester (+) lead ≥≥White/Green lead

CONTROL FUNCTIONS1-9EC150000CONTROL FUNCTIONSEC151000“ENGINE STOP” BUTTONThe “ENGINE STOP” button 1 is located onthe left handlebar. Continue pushing

SOLENOID VALVE SYSTEM6-6EC650001SOLENOID VALVE SYSTEMEC651012INSPECTION STEPSIf the solenoid valve will not operate, use the following inspection step

SOLENOID VALVE SYSTEM6-7EC624000COUPLERS AND LEADS CONNECTIONINSPECTION1. Check:• Couplers and leads connectionRust/ Dust/ Looseness/Short-circuit ≥Re

SOLENOID VALVE SYSTEM6-8EC635002VOLTAGE REGULATOR INSPECTION1. Disconnect the condenser lead.2. Start the engine.3. Inspect:• Out-put voltageOut of sp

THERMO UNIT SYSTEM6-9EC6A0000THERMO UNIT SYSTEMEC6A1000INSPECTION STEPSIf the water temperature gauge (thermo unit) will not operate, use the followin

THERMO UNIT SYSTEM6-10EC624000COUPLERS AND LEADS CONNECTIONINSPECTION1. Check:• Couplers and leads connectionRust/ Dust/ Looseness/Short-circuit ≥Repa

SETTING7-1EC700000TUNINGEC710000ENGINEEC711011Carburetor setting• The role of fuel is not only to produce motivepower but also to cool the engine and,

SETTING7-2That is:• Higher temperature expands the air with itsresultant reduced density.• Higher humidity reduces the amount of oxy-gen in the air by

SETTING7-3Next run a few laps of the circuit with thissetting and check for any difference inengine revolutions. If no difference isnoticed, use a mai

SETTING7-4Run a few laps of the circuit to check theengine for response to revolutions.On the other hand, if the use of a differentjet needle appears

SETTING7-54. Adjustment of jet needle clip positionMid-open adjustment for the jet needle clipposition 1 follows the completion of theadjustment of t

CONTROL FUNCTIONS1-10EC157000REAR BRAKE PEDALThe rear brake pedal 1 is located on the rightside of the machine. Press down on the brakepedal to activa

SETTING7-6EC71B030Relationship with throttle openingThe flow of the fuel through the carburetormain system is controlled by the main jet andthen, it i

SETTING7-72. Pilot jet 1The pilot jet is used in relation to the engineresponse at small throttle opening. This ischanged when the jet needle setting

SETTING7-8EC71Q000Carburetor setting partsPart name Size Part numberMain jet 11Lean #160 4MX-14943-39#162 4MX-14943-90#165 4MX-14943-40#168 4MX-14943-

SETTING7-9EC71J001Plug chopWhen checking the discoloration of the sparkplug and piston head, push the “ENGINESTOP” button while running along a straig

SETTING7-10When the cylinder gasket is changed, measurethe protruding (or sinking) amount of the pistonabove (below) the cylinder top and thenchange t

SETTING7-112. Loosen the stand installation bolt 1, thenrotate the dial gauge stand and set it closeto the center of the piston. Tighten the standinst

SETTING7-12TUN3rd gearGear ratio Part numberNumber ofgrooveSupplying part 23/16 (1.438) 4JT-17231-00/4JT-17131-00 –Factory installed 24/17 (1.412) 4JT

SETTING7-13EC71U000Transmission setting partsPart name Size Part numberMain axle 11* 15T 4JT-17411-002nd pinion gear 2217T 4JT-17121-10* 19T 4JT-17121

SETTING7-14EC720000CHASSISEC72J001Chassis settingHow to go about setting the chassis• Measure the stroke of the front and rear sus-pension to get an i

SETTING7-15EC72M001Tire and machine’s postureIf a non-designated tire is used, the differencein radius between the front and the rear tiremay affect t

CONTROL FUNCTIONS1-11GENINFONOTE:• If an out-of-step indication takes place,restarting the engine brings the tachometerback to a normal indication thr

SETTING7-16EC72K014SettingsFor full use of engine performance and saferiding, set the suspension as follows. (Ex-fac-tory settings are intended for a

SETTING7-17TUNSETTING CHARTACTUAL RUNOKFront remaining stroke 5 to 10 mm (0.20 ~ 0.39 in)Rear remaining stroke 20 to 30 mm (0.79 ~ 1.18 in)Poor stroke

* Factory installedSETTING7-18EC71P011Selection of the secondary reduction ratio(Sprocket)Secondary Number of driven sprocket teethreduction =ratioNu

SETTING7-19TUNEC72L003Chassis setting troubleshootingChattering(Smallrebounds, Bottoming (full stroke) • Increase spring preload.up-and-down • Increas

SETTING7-20TUNHandlebarPoor of front load • Decrease spring preload (for front).fluctuating• Increase front fork top end.• Increase rear height.• Incr

SETTING7-21TUNEC740010Setting record tableThe data shown here is an example of entry. For your actual use, copy the necessary data.Event nameDateWeath

SETTING7-22TUNEvent nameDateWeatherPlaceSetting specs:Ignition timingSpark plugCarburetorMain jetPower jetJet needlePilot jetPilot air screwFloat heig

99.8-0.1x1

CONTROL FUNCTIONS1-12EC15H000CARBURETOR COVERThe carburetor cover 1 is provided for carbu-retor space.CCCAUTION:If the machine is run without this cov

CONTROL FUNCTIONS1-13EC15Q001DETACHABLE MAINSTANDThis mainstand 1 is used to support only themachine when standing or transporting it.NOTE:The mainsta

FUEL AND ENGINE MIXING OIL1-14EC160040FUEL AND ENGINE MIXING OILMix oil with the gas at the ratio specified below.Always use fresh, name-brand gasolin

INFORMATION BEFORE PRE-OPERATION1-15EC170011INFORMATION BEFORE PRE-OPERATION1. The brake disc 1 is coated with a rustinhibitor. Before riding the mach

EC020000INTRODUCTIONCongratulations on your purchase of a YamahaTZ series. This model is the culmination ofYamaha’s vast experience in the production

STARTING AND BREAK-IN1-16EC190000STARTING AND BREAK-INCCCAUTION:Before starting the machine, perform thechecks in the pre-operation check list.WNever

STARTING AND BREAK-IN1-17EC193021STARTING A WARM ENGINEDo not pull the starter knob (CHOKE). Openthe throttle slightly and start the engine.CCCAUTION:

STARTING AND BREAK-IN1-18CCCAUTION:After the break-in or before each race, youmust check the entire machine for loose fit-tings and fasteners as per “

TORQUE-CHECK POINTS1-19GENINFOEC1A0032TORQUE-CHECK POINTSNOTE:Concerning the tightening torque, refer to“MAINTENANCE SPECIFICATIONS” sectionin the CHA

CLEANING AND STORAGE1-20EC1B0000CLEANING AND STORAGEEC1B1000CLEANINGFrequent cleaning of your machine willenhance its appearance, maintain good overal

CLEANING AND STORAGE1-21EC1B2010STORAGEIf your machine is to be stored for 60 days ormore, some preventive measures must betaken to avoid deterioratio

GENERAL SPECIFICATIONS2-1EC200000SPECIFICATIONSEC211000GENERAL SPECIFICATIONSSPECModel name: TZ125M1 (USA)TZ125(M) (OTHERS)Model code number: 4JT7Dime

GENERAL SPECIFICATIONS2-2SPECTransmission:primary reduction system Spur gearPrimary reduction ratio 60/21 (2.857)Secondary reduction system Chain driv

MAINTENANCE SPECIFICATIONS2-3EC212000MAINTENANCE SPECIFICATIONSEC212100ENGINESPECItem Standard LimitCylinder head:Combustion chamber capacity 9.05 cm3

MAINTENANCE SPECIFICATIONS2-4SPECItem Standard LimitCarburetor:Type/Manufacturer PWM38/KEIHIN ?I.D. mark 4JT7 60 ?Main jet (M.J.) #220 ?Jet needle-cli

EC030010WARRANTY INFORMATIONThis model is sold AS IS, WITHOUT ANY WARRANTIES EXPRESSED OR IMPLIED REGARD-LESS OF THE INTENDED USE.THE PURCHASER OF THI

MAINTENANCE SPECIFICATIONS2-5SPECPart to be tightened Thread size Q’tyTightening torqueNm mdkg ftdlbSpark plugM14SX 1.25 1 19 1.9 13Cylinder head (bol

MAINTENANCE SPECIFICATIONS2-6EC212201CHASSISSPECItem Standard LimitSteering system:Steering bearing type Taper roller bearing ?Front suspension:Front

MAINTENANCE SPECIFICATIONS2-7SPECItem Standard LimitFront disc brake:Disc outside dia.XThickness 298X5.0 mm (11.73X0.20 in) ?Pad thickness 5.3 mm (0.2

MAINTENANCE SPECIFICATIONS2-8SPECPart to be tightened Thread size Q’tyTightening torqueNm mdkg ftdlbHandle crown and outer tube M 8 X 1.25 2 15 1.5 11

MAINTENANCE SPECIFICATIONS2-9SPECPart to be tightened Thread size Q’tyTightening torqueNm mdkg ftdlbEngine mounting :Engine and frame (front) M10 X 1.

MAINTENANCE SPECIFICATIONS2-10EC212300ELECTRICALSPECItem Standard LimitIgnition system:Ignition timing (B.T.D.C) 2.3 mm (0.091 in) …Advancer type Elec

GENERAL TORQUE SPECIFICATIONS/DEFINITION OF UNITS2-11EC220001GENERAL TORQUE SPECIFICATIONSA: Distance across flatsB: Outside thread diameterSPECThis c

CABLE ROUTING DIAGRAM2-12EC240000CABLE ROUTING DIAGRAMSPEC1 Clamp2 Throttle cable3 Wireharness4 Clutch cable5 Front brake hose6 Cable7 FrameA Do not c

CABLE ROUTING DIAGRAM2-13SPEC1 Tachometer assembly2 Clamp3 CDI unit4 Water temperature gauge lead5 Wireharness6 “ENGINE STOP” button7 CDI magneto lead

CABLE ROUTING DIAGRAM2-14SPEC1 Throttle cable2 Clamp3 Front brake hose4 Clutch cableA Clamp the water temperature lead at its coupler portion.B Positi

EC040001IMPORTANT NOTICETHIS MACHINE IS DESIGNED STRICTLYFOR COMPETITION USE, ONLY ON ACLOSED COURSE. It is illegal for thismachine to be operated on

CABLE ROUTING DIAGRAM2-15SPEC1 Brake hose holder2 Reservoir hose3 Rear brake hose4 ClampA Position the reservoir hose with the paint facing upward.B B

MAINTENANCE INTERVALS3-1EC300000REGULAR INSPECTION AND ADJUSTMENTSEC310062MAINTENANCE INTERVALSThe following schedule is intended as a general guide t

MAINTENANCE INTERVALS3-2INSPADJAfterEvery EveryEveryAs re-Item break-race 500km1,000quiredRemarksin kmPLUG CAP (1,500 km)Inspect and replace ∂∂COOLING

MAINTENANCE INTERVALS3-3INSPADJAfterEvery EveryEveryAs re-Item break-race 500km1,000quiredRemarksin kmDRIVE CHAIN Use chain lubeLubricate, slack, alig

PRE-OPERATION INSPECTION AND MAINTENANCE3-4EC320010PRE-OPERATION INSPECTION AND MAINTENANCEBefore riding for break-in operation, practice or a race, m

LOCKING WIRE INSTALLATION GUIDE3-5EC340000LOCKING WIRE INSTALLATION GUIDEINSPADJBolt to boltOil drain boltOil filler cap and check boltBoltTank rail d

ENGINE/COOLING WATER LEVEL INSPECTION/COOLING WATER REPLACEMENT3-6EC350011ENGINECCCAUTION:• The cooling system is filled with coolant atthe factory to

RADIATOR CAP INSPECTION3-73. Disconnect:• Radiator hose 2 14. Remove:• Radiator capDrain the cooling water completely.5. Clean:• Cooling systemThoroug

RADIATOR CAP OPENING PRESSURE INSPECTION/COOLING SYSTEM INSPECTION3-8EC356001RADIATOR CAP OPENING PRESSUREINSPECTION1. Attach:• Radiator cap tester 1

CLUTCH CARE/CLUTCH ADJUSTMENT/THROTTLE CABLE ADJUSTMENT3-94. Inspect:• PressureImpossible to maintain the specified pres-sure for 10 seconds ≥ Repair.

6. GASOLINE CAN CAUSE INJURY.If you should swallow some gasoline,inhale excess gasoline vapors, orallow any gasoline to get into youreyes, contact a d

TRANSMISSION OIL LEVEL CHECK3-102. Adjust:• Throttle grip free playThrottle grip free play adjustment steps:• Loosen the locknut 1.• Turn the adjuster

TRANSMISSION OIL REPLACEMENT3-11EC35K012TRANSMISSION OIL REPLACEMENT1. Start the engine and warm it up for severalminutes and wait for five minutes.2.

PILOT AIR SCREW ADJUSTMENT/MUFFLER INSPECTION/SILENCER INSPECTION3-12EC35P010MUFFLER INSPECTION1. Inspect:• O-ring 1Damage ≥ Replace.EC35Q001SILENCER

CHASSIS/BRAKE SYSTEM AIR BLEEDING3-13EC360000CHASSISEC361002BRAKE SYSTEM AIR BLEEDINGWBleed the brake system if:• The system has been disassembled.• A

FRONT BRAKE ADJUSTMENT/REAR BRAKE ADJUSTMENT3-14NOTE:If bleeding is difficult, it may be necessary tolet the brake fluid system stabilize for a fewhou

FRONT BRAKE PAD INSPECTION AND REPLACEMENT3-152. Adjust:• Brake pedal heightPedal height adjustment steps:• Loosen the locknut 1.• Turn the adjusting

REAR BRAKE PAD INSPECTION AND REPLACEMENT3-16• Install the brake pads 9, pad support 0,pad pin ¡ and cotter pin ™.NOTE:• Always use a new cotter pin.•

REAR BRAKE PAD INSPECTION AND REPLACEMENT3-17• Remove the cotter pin 3, pad pin 4, padsupport 5 and brake pads 6.• Connect the transparent hose 7 to t

BRAKE FLUID LEVEL INSPECTION/SPROCKETS INSPECTION3-18EC367001BRAKE FLUID LEVEL INSPECTION1. Place the master cylinder so that its top is ina horizonta

DRIVE CHAIN INSPECTION3-19EC369051DRIVE CHAIN INSPECTION1. Remove:• Master link clip• Joint 1• O-ring 2• Drive chain 32. Clean:• Drive chainBrush off

EC050000TO THE NEW OWNERThis manual will provide you with a good basicunderstanding of features, operation, andbasic maintenance and inspection items

DRIVE CHAIN SLACK ADJUSTMENT3-205. Check:• Drive chain stiffness aClean and oil the chain and hold as illus-trated.Stiff ≥ Replace drive chain.6. Inst

DRIVE CHAIN SLACK ADJUSTMENT3-21NOTE:Before checking and/or adjusting, rotate therear wheel through several revolutions andcheck the slack several tim

WHEEL ALIGNMENT ADJUSTMENT3-22EC36B000WHEEL ALIGNMENT ADJUSTMENT1. Remove:• Lower cowl2. Place the machine on a level place andhold it up on upright p

FRONT FORK INSPECTION/FRONT FORK TOP END ADJUSTMENT3-236. Adjust:• Wheel alignmentTurn the chain puller adjuster while payingattention to the drive ch

FRONT FORK TOP END ADJUSTMENT3-24• Adjust the front fork top end a.Front fork top end aa:StandardExtent of adjustment18 mm (0.71 in)Zero~20 mm(Zero~0.

FRONT FORK SPRING PRELOAD ADJUSTMENT3-25CCCAUTION:Tighten the pinch bolts to specifiedtorque. If torqued too much, it may causethe front fork to malfu

FRONT FORK REBOUND DAMPING FORCEADJUSTMENT3-26• STANDARD POSITION:This is the position which is back by the spe-cific number of clicks from the fully

FRONT FORK COMPRESSION DAMPING FORCEADJUSTMENT3-27• STANDARD POSITION:This is the position which is back by the spe-cific number of clicks from the fu

REAR SHOCK ABSORBER INSPECTION/SEAT HEIGHT ADJUSTMENT3-28• STANDARD POSITION:This is the position which is back by the spe-cific number of clicks from

REAR SHOCK ABSORBER SPRING PRELOADADJUSTMENT3-29INSPADJSeat height adjustment steps:• Remove the cap 1.• Loosen the lock bolt 2 and locknut 3.• Turn t

EC080000HOW TO USETHIS MANUALEC081000PARTICULARLY IMPORTANT INFOR-MATION!!The Safety Alert Symbol means ATTENTION!BECOME ALERT! YOUR SAFETY ISINVOLVED

REAR SHOCK ABSORBER REBOUND DAMPINGFORCE ADJUSTMENT3-30Spring length (installed) aa:Standard lengthExtent of adjustment138 mm (5.43 in)130~150 mm(5.12

REAR SHOCK ABSORBER COMPRESSION DAMPINGFORCE ADJUSTMENT3-31NOTE:Fully turn in the adjuster and then turn it out.Specify the position in which the firs

TIRE PRESSURE CHECK/TIRE INSPECTION/WHEEL INSPECTION3-32CCCAUTION:Do not force the adjuster past the minimumor maximum extent of adjustment. Theadjust

STEERING HEAD INSPECTION AND ADJUSTMENT3-332. Inspect:• Bearing free playExist play ≥ Replace.EC36U060STEERING HEAD INSPECTION ANDADJUSTMENT1. Remove

STEERING DAMPER ADJUSTMENT3-34• Tighten the ring nut 3 using ring nutwrench 4.NOTE:Set the torque wrench to the ring nut wrenchso that they form a rig

WIRES, CABLES/COWLING INSTALLATION INSPECTION3-35Extent of adjustment:Maximum MinimumFully turned-in Fully turned-outposition position]• STANDARD POSI

LUBRICATION3-36EC36a023LUBRICATIONTo ensure smooth operation of all componentslubricate your machine during setup, afterbreak-in, and after every race

ELECTRICAL/SPARK PLUG INSPECTION/IGNITION TIMING CHECK3-37EC370000ELECTRICALEC371001SPARK PLUG INSPECTION1. Remove:• Spark plug2. Inspect:• Electrode

IGNITION TIMING CHECK3-382. Attach:• Dial gauge 1• Dial gauge stand 2Dial gauge:YU-03097/90890-01252Stand:YU-01256C3. Rotate the magneto rotor 1 until

COWLING, SEAT AND FUEL TANK4-1ENGEC400000ENGINEEC4U0000COWLING, SEAT AND FUEL TANKExtend of removal: 1 Cowling removal 2 Seat removal3 Fuel tank remov

EC083000MANUAL FORMATAll of the procedures in this manual are organized in a sequential, step-by-step format. The infor-mation has been complied to pr

COWLING, SEAT AND FUEL TANK4-2EC4U3000REMOVAL POINTSEC4U3100Fuel tank breather hose1. Disconnect:• Fuel tank breather hose 1NOTE:Disconnect the fuel t

EXHAUST PIPE AND SILENCER4-3ENGEC4S0000EXHAUST PIPE AND SILENCERExtend of removal: 1 Exhaust pipe removal 2 Silencer removalExtend of removal Order Pa

RADIATOR4-4ENGEC450001RADIATORExtend of removal: 1 Radiator removalExtend of removal Order Part name Q’ty RemarksRADIATOR REMOVALPreparation for Cowli

RADIATOR4-5EC456000HANDLING NOTEWDo not remove the radiator cap when theengine and radiator are hot. Scalding hotfluid and steam may be blown out unde

RADIATOR4-62. Install:• Radiator breather hose 1• Radiator hose 4 2T2 Nm (0.2 mdkg, 1.4 ftdlb)• Radiator hose 2 3T2 Nm (0.2 mdkg, 1.4 ftdlb)• Thermo u

CARBURETOR AND REED VALVE4-7ENGEC460000CARBURETOR AND REED VALVEExtend of removal: 1 Carburetor removal 2 Reed valve removalExtend of removal Order Pa

CARBURETOR AND REED VALVE4-8ENGEC468000CARBURETOR DISASSEMBLYExtend of removal: 1 Carburetor disassemblyExtend of removal Order Part name Q’ty Remarks

CARBURETOR AND REED VALVE4-9EC463000REMOVAL POINTSEC463110Throttle valve1. Remove:• Throttle valve 1• Ring 2• Spring (throttle valve) 3• Mixing chambe

CARBURETOR AND REED VALVE4-102. Inspect:• Main jet 1• Pilot jet 2• Power jet 3Contamination ≥ Clean.NOTE:• Use a petroleum based solvent for cleaning.

CARBURETOR AND REED VALVE4-11EC464600Float1. Inspect:• Float 1Damage ≥ Replace.ENGMeasurement and adjustment steps:• Hold the carburetor in an upside