Yamaha RST90K Owner's Manual download pdf (Page 68)

8-14

Coolant replenishment

1. Remove the coolant reservoir cap and add coolant

until it reaches the “COLD LEVEL” mark.

“COLD LEVEL” mark

Coolant reservoir cap

2. Start the engine and add coolant until the coolant

level does not go down, and then stop the engine.

3. Fill the coolant reservoir with coolant until it reaches

the “COLD LEVEL” mark.

4. Install the coolant reservoir cap. Check for any cool-

ant leakage.

NOTE:

If you find any leaks, consult a Yamaha dealer.

Recommended coolant:

High quality ethylene glycol antifreeze containing corro-

sion inhibitors.

Antifreeze and water mixing ratio: 60:40

Total amount:

5.2 L (4.58 Imp qt, 5.50 US qt)

U8ET10.book Page 14 Monday, June 14, 2004 5:42 PM

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SNOWMOBILE 1
MACHINE IDENTIFICATION 3
INTRODUCTION 4
CONTENTS 6
SNOWMOBILE LIMITED WARRANTY 8
ESU04280 11
LOCATION OF THE IMPORTANT 12
SAFETY INFORMATION 14
DESCRIPTION 17
CONTROL FUNCTIONS 19
Starter lever (choke) 20
Throttle lever 20
ESU04151 21
Speedometer unit 22
High beam indicator light 22
ESU03821 23
Fuel level warning indicator 24
Oil level warning indicator 24
ESU04180 25
ESU04251 25
Engine stop switch 26
Brake lever 26
Parking brake lever 27
Shift lever 27
Headlight beam switch 28
Auxiliary DC jack 28
Passenger grip warmer switch 29
Shroud latches 30
Drive guard 30
V-belt holders 31
Storage areas 31
PRE-OPERATION CHECKS 34
Engine oil 35
Engine oil level 36
ESU00086 37
ESU00091 39
Brake fluid leakage 40
Drive track 41
Slide runners 41
Skis and ski runners 42
Steering system 42
Air filter 43
Fittings and fasteners 43
ESU00345 44
OPERATION 45
Break-in 46
Riding your snowmobile 47
To start out and accelerate 47
Turn i ng 48
Riding uphill 48
Riding downhill 49
Traversing a slope 49
Ice or icy surface 49
Hard-packed snow 50
Maximizing drive track life 51
ESU04360 52
Stopping the engine 53
Transporting 54
PERIODIC MAINTENANCE 55
Tool kit 58
Spark plug inspection 58
Engine idle speed adjustment 60
Throttle cable adjustment 60
Carburetor adjustment 61
High altitude adjustments 63
Adjusting the valve clearance 63
Changing the engine oil 64
Cooling system 67
V-belt replacement 69
ESU03511 71
Checking the brake pads 73
Brake fluid replacement 74
Suspension 74
ESU03041 75
ESU04350 76
ESU04220 77
ESU04341 78
Drive track adjustment 79
Ski alignment 81
Handlebar adjustment 81
Lubrication 83
Headlight bulb replacement 84
Headlight beam adjustment 84
Fuse replacement 85
TROUBLESHOOTING 88
Yamaha dealer to inspect 90
ESU03593 92
SPECIFICATIONS 94
ESU00231 95
Electric 96
WIRING DIAGRAM 97

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Yamaha RST90K Owner's Manual Page 68

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