Yamaha SR125 Service Manual download pdf (Page 139)

4-59

TRANSMISSION SIFT CAM AND SHIFT FORK

ENG

NOTE:

4. Check:

 Shift fork movement

(on the guide bar)

Unsmooth operation  Replace the shift

fork and the guide bar.

When damaged the shift fork and mission gear,

replace the facing each gear as set.

SR******

TRANSMISSION, SHIFT CAM AND SHIFT

FORK INSTALLATION

1. Measure:

 Main axle assembled length

Assembled length (main axle):

90.9  91.1 mm

2. Install:

 O-ring

To the drive sprocket folder groove.

3. Install:

 Shift fork 3 “L” (left)

(face the “L” side for the clutch side.)

 Shift fork 2 “R” (right)

(face the “R” side for the clutch side.)

 Shift fork 1 “C” (center)

(face the “C” side for the magneto side.)

 Shift fork guide bar 1

(long)

 Shift fork guide bar 2

(short)

Install the shift forks with the embossed mark to

the right and in sequence (R, C, L) beginning

from the right.

4. Check:

 Shift cam operation

Unsmooth operation  Repair.

Check the transmission and shift forks for

smooth operation by turning the shift cam with

your hand.

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Ruchira 26 Jul 2025 | 07:58:41

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Yamaha SR125 Service Manual Page 139