For safety and to prevent excessive wear, the drive chain must be checked, adjusted, and lubricated in accordance with the Periodic Maintenance Chart. If the chain becomes badly worn or maladjusted ei- ther too loose or too tight it could jump off the sprockets or break.
WARNING
A chain that breaks or jumps off the sprockets could snag on the engine sprocket or lock the rearwheel, severely damaging the motor cycle and causing it to go out of control. In- spect the chain for damage and proper ad- justment before each ride.
Drive Chain Slack Inspection
Drive Chain Slack
Standard 54 64 mm (2.1 2.5 in.)
Adjust the drive chain if its slack is out of specification.
A. Drive Chain Slack
Drive Chain Slack Adjustment
Drive Chain Slack
54-64 mm (2.1 2.5 in.)
A. Cotter Pin
B. Rear Axle Nut
C. Chain Adjuster Locknut
D. Adjusting Bolt
E. Marks
F. Notch
NOTE
Wheel alignment can also be checked using the straightedge or string method.
WARNING
Misalignment of the wheel will result in abnormal wear, and may result in an unsafe riding condition. Align the rear wheel using the marks on the swingarm or measure the distance between the center of the axle and the swingarm pivot.
Tightening Torque
Rear Axle Nut: 80 Nm (8.2 kgf m, 59 ftlb)
A. Cotter Pin
WARNING
A loose axle nut can lead to an accident resulting in serious injury or death. Tighten the axle nut to the proper torque and install a new cotter pin. Check the rear brake effectiveness.
NOTE
When riding in wet and muddy conditions, mud sticks to the chain and sprockets, resulting in an overly tight chain, which can cause it to break.To prevent this, adjust the chain slack (measured between the chain and the swingarm) to 64 74 mm (2.52.9 in.).
Chain Wear Inspection
When the chain has reached its wear limit (i.e. when it has stretched by 1.7% of its original length), it is no longer safe for use and should be replaced. Since it is impractical to measure the entire length of the chain, determine the degree of wear by measuring a 20-link section of the chain.
A. Weight
B. Tape Measure
NOTE
A. Master Link Clip
B. Direction of Chain Rotation
Chain Guide Wear Inspection
Visually inspect the drive chain guide and replace it if excessively worn or damaged.
A. Drive Chain Guide
Chain Slipper Wear Inspection
Visually inspect the upper and lower of the chain slipper on the swingarm and replace them if worn or damaged.
A. Upper and Lower of the Chain Slipper
B. Swingarm
Sprocket Wear InspectionVisually inspect the sprocket teeth and replace the sprocket if its teeth are worn or damaged.
Sprocket Teeth Wear
A. Good Teeth
B. Worn Teeth
C. Damaged Teeth
NOTE
Sprocket wear is exaggerated in the illustration.
Chain Lubrication
Lubrication is necessary after riding through rain or on wet roads, or any time that the chain appears dry. Use a lubricant for drive chains. If the chain is especially dirty, clean it using a cleaner for drive chains following the instructions supplied by the chain cleaner manufacturer.
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