Yamaha YTZ250S 1986 Service Manual page 22

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REGULAR MAINTENANCE AND
ADJUSTMENT
MAINTENANCE INTERVALS ....................................................... 2-1
LUBRICATION ........................................................................... 2-3
SPECIAL TOOLS ........................................................................ 2-5
For Tune-up ............................................................................ 2-5
For Engine Service .................................................................. 2-5
For Chassis Service ................................................................. 2-6
For Electrical Components ....................................................... 2-6
MINOR MAINTENANCE AND ADJUSTMENTS ............................. 2-6
Spark Plug .............................................................................. 2-6
Ignition Timing ....................................................................... 2-7
Throttle Lever Adjustment ....................................................... 2-8
Idle Speed .............................................................................. 2-8
Air Filter ................................................................................. 2-8
Clutch .................................................................................. 2-10
Front Brake Adjustment ......................................................... 2-10
Rear Brake Pedal Height Adjustment ...................................... 2-10
Checking the Front and Rear Brake Pads ................................ 2-11
Inspecting the Brake Fluid Level ............................................. 2-11
Drive Chain Slack Check .................................................... 2-11
Drive Chain Slack Adjustment ............................................. 2-12
Drive Chain Cleaning and Lubrication ..................................... 2-12
Steering Head Adjustment ..................................................... 2-12
Wheel Bearings ..................................................................... 2-13
Fuel Cock .............................................................................. 2-14
Tires ..................................................................................... 2-14
Cable Inspection and Lubrication ............................................ 2-15
Brake and Change Pedal/Clutch and Brake Levers ................... 2-15
Headlight Bulb Replacement .................................................. 2-15
Headlight Beam Adjustment ................................................... 2-16