wheel bolt torque YAMAHA YZ85 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,
7-23
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. 7-25
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. 7-27
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,
7-26, 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
UB4B82E0.book Page 2 Wednesday, March 11, 2020 1:10 PM

Periodic maintenance an d a djustment
7-22
7 this from occurrin
g, keep the
d rive chain slack within the
specifie d limits.
[ECA10572]
EAU84060
To adjust the drive chain slack
Consult a Yamaha dealer before ad-
justing the drive chain slack. 1. Loosen the axle nut and the lock- nut on each side of the swingarm.
2. To tighten the drive chain, turn the drive chain slack adjusting bolt on
each side of the swingarm in di-
rection (a). To loosen the drive
chain, turn the adjusting bolt on
each side of the swingarm in di-
rection (b), and then push the rear
wheel forward.
TIP
Using the alignment marks on the drive
chain pullers and the notch on each
side of the swingarm, make sure that
both drive chain pullers are in the same
position for proper wheel alignment.
3. Tighten both locknuts and the axlenut to the specified torques.
4. Make sure that the drive chain pullers are in the same position,
the drive chain slack is correct,
and the drive chain moves
smoothly.1. Axle nut
2. Locknut
1. Drive chain slack adjusting bolt
1
2
(b)
(a) 1
1. Notch
2. Alignment mark
3. Drive chain puller
Ti
ghtening torques:
Locknut: 21 N·m (2.1 kgf·m, 15 lb·ft)
Axle nut:
80 N·m (8.0 kgf·m, 59 lb·ft)
12
3
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Periodic maintenance an d a djustment
7-29
7
5. Remove the wheel.
NOTICE: Do
not apply the brake after the
wheel an d b rake disc have been
remove d, otherwise the brake
pa ds will b e forced shut.
[ECA11073]
To install the front wheel
1. Make sure the brake pads have not been forced shut.
2. Lift up the wheel between the fork legs.
3. Insert the wheel axle from the right side.
4. Install the washer and axle nut.
5. Tighten the axle nut to the speci- fied torque.
EAU25081
Rear wheel
EAU84051
To remove the rear wheel
WARNING
EWA10822
To avoi d injury, securely support the
vehicle so there is no dan ger of it
fallin g over.
1. Loosen the axle nut.
2. Place the motorcycle on a suitable
stand. (See page 7-28.)
3. Loosen the locknut, and then turn the drive chain slack adjusting bolt
in direction (a). Repeat for the oth-
er side.
Tightening torque:
Axle nut: 70 N·m (7.0 kgf·m, 52 lb·ft)
1. Axle nut
2. Washer
1. Drive chain slack adjusting bolt
2. Locknut
3. Drive chain puller
12
23
(a)1
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