Yamaha YZ450FA Automobile User Manual


 
3-26
CHASSIS
2. Remove:
• Master link clip
• Joint "1"
• Drive chain "2"
3. Clean:
• Drive chain
Place it in kerosene, and brush off as much
dirt as possible. Then remove the drive
chain from the kerosene and dry the drive
chain.
4. Check:
• Drive chain stiffness "a"
Clean and oil the drive chain and hold as il-
lustrated.
Stiff Replace the drive chain.
5. Install:
• Drive chain "1"
• Joint "2"
• Master link clip "3"
Be sure to install the master link clip to the
direction as shown.
a. Turning direction
6. Lubricate:
• Drive chain
ADJUSTING THE DRIVE CHAIN SLACK
1. Elevate the rear wheel by placing the suit-
able stand under the engine.
2. Check:
• Drive chain slack "a"
Above the seal guard installation bolt.
Out of specification Adjust.
Before checking and/or adjusting, rotate the
rear wheel through several revolutions and
check the slack several times to find the tightest
point. Check and/or adjust the drive chain slack
with the rear wheel in this "tight chain" position.
Drive chain lubricant:
SAE 10W-40 motor oil or suitable
chain lubricants
Drive chain slack:
50–60 mm (2.0–2.4 in)