wheel bolts YAMAHA YZ65 2021 Owners Manual

For your safety – pre-operation checks
5-2
5
Drive chain• Check chain slack.
• Adjust if necessary.
• Check chain condition.
• Lubricate if necessary. 7-21,
7-22
Drive sprocket • Check the drive sprocket nut torque.
• Tighten if necessary.
—
Wheels an d tires •Check for damage.
• Check tire condition and tread depth.
• Check air pressure.
• Correct if necessary.
• Check for loose spokes and tighten if necessary. 7-14,
7-16
Shift ped al • Make sure that operation is smooth.
• Check the shift pedal bolt torque.
• Correct if necessary. 7-18
Brake ped al • Make sure that operation is smooth.
• Lubricate pedal pivoting point if necessary. 7-24
Brake an d clutch le-
vers • Make sure that operation is smooth.
• Lubricate lever pivoting points if necessary.
7-24
Steerin g • Check that the handlebar can be turned smoothly and
has no excessive play. 7-26
Front fork and rear
shock a bsor ber as-
sem bly • Check that they operate smoothly and there is no oil
leakage. 4-9,
4-11,
4-12, 7-26
Chassis fasteners • Make sure that all nuts, bolts and screws are properly
tightened.
• Check all cotter pins for damage and correct install- ment.
• Tighten or replace if necessary. —
Movin g parts an d ca-
b les • Check the control cables for damage.
• Check that the control cables move smoothly.
• Check that the control cables are not caught when the
handlebars are turned or when the front forks travel up
and down.
• Lubricate moving parts and cables if necessary. 7-23,
7-24,
7-25, 7-25
Exhaust system • Check that the exhaust pipe and muffler are tightly
mounted and have no cracks.
• Check for leakage. —
En gine stop switch • Check operation. 4-1
I g nition system • Check that all leads and cables are properly connected. 7-6
ITEM
CHECKSPAGE
UBR882E0.book Page 2 Wednesday, February 26, 2020 11:39 AM

Periodic maintenance an d a djustment
7-5
7
EAU42012
TIP
 Hydraulic brake service
• Regularly check and, if necessary, correct the brake fluid levels.
• Every two years replace the internal components of the brake master cyl- inders and calipers, and change the brake fluid.
• Replace the brake hoses every four years and if cracked or damaged.
NO. ITEM ROUTINEAfter
break-in
Everyrace
Every
third race
Every
fifth race
As
required
*Shock absorber
assembly Check operation and adjust. Tighten if necessary.
Lubricate with lithium-soap-based
grease.

*Drive chain roller
and support guide Check for wear or damage. Replace if necessary.
*Rear suspension Check operation and tighten if
necessary.
Lubricate with molybdenum disulfide grease.
Check operation, free play, andtighten if necessary.
*
Steering head Clean and lubricate with
lithium-soap-based grease.
Replace bearings. Check tire air pressure, wheel runout,spokes for looseness, and tires for
wear.

Tighten sprocket bolts if necessary.
*Tires and wheels
Check wheel bearings for looseness. Lubricate wheel bearings with
lithium-soap-based grease.
Replace wheel bearings.
*Moving parts and ca-
bles Lubricate.
*
Throttle grip Check operation. Check throttle grip free play, and
adjust if necessary.
Lubricate cable and grip housing.
After washing the motorcycle or riding in the rain.
27 *Swingarm pivot
bearings 
Lubricate with molybdenum
disulfide grease. Check bearing assemblies for
looseness.
24
25
26
28
29
30
31
UBR882E0.book Page 5 Wednesd ay, February 26, 2020 11:39 AM