Page 115 of 382
CHAS
FRONT FORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-42
FRONT FORK REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-42
FRONT FORK DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-43
FRONT FORK REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-45
OIL REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-46
CLEANING THE DUST SEAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-49
SEAL AND BUSH REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-50
OIL LEAKAGE FROM DUST SEAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-56
ANOMALOUS HYDRAULIC BRAKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-56
FRONT FORK INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-57
FRONT FORK INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-59
FRONT FORK ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-60
STEERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-61
STEERING REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-64
STEERING INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-65
STEERING INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-65
REAR SHOCK ABSORBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-69
NOTE ON DISPOSAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-72
SHOCK ABSORBER REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-73
SHOCK ABSORBER INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-74
SHOCK ABSORBER ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-74
SWINGARM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-76
SWINGARM REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-77
SWINGARM INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-78
LATERAL FREE PLAY ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-79
SWINGARM INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-80
DRIVE CHAIN, DRIVE SPROCKET AND REAR WHEEL SPROCKET . . . . . . . . . . . . . 4-82
DRIVE CHAIN REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-82
DRIVE CHAIN INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-83
DRIVE CHAIN INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-85
ProCarManuals.com
Page 165 of 382
FRONT FORK
4-50
CHAS
4. Using a small screwdriver take a small amount of silicon grease and insert it under
the lip paying attention not to scratch it.
Lubricate the dust seal by rotating it in such a
manner that the grease is distributed in the
inner part of the lip.
5. Remount the dust seal inserting it with force into the oil seal seat.
Check that the oil seal housing edge of the
dust seal adheres perfectly to the oil seal
seat.
CAUTION:
SEAL AND BUSH REPLACEMENT
NOTE:
To ensure maximum efficiency to the fork and
therefore a longer duration and greater safety,
every year (unless there are leakages) it is nec-
essary to replace all the seals and slide bushes.
To carry out this operation it is recommended to
use the proper tools.
To remove the fork leg from the steering unit,
the cap bolt, the spring and to drain and refill
the oil, follow the procedures indicated in the
preceding pages scrupulously.
CAUTION:
1. Drain:
•Fork leg oil Refer to “OIL REPLACEMENT”section.
2. Clamp:
•Fork leg in a vice (in a horizontal position)
Protect the outer tube with a clean rag to
avoid damaging.
CAUTION:
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Page 176 of 382
CHAS
4-61
STEERING
Order Job name/Part name Q.ty Remarks Steering removal Remove the parts in order.
Park the motorcycle on a level surface.
WARNING
Securely support the motorcycle to pre-
vent it falling over.
Front wheel Refer to “FRONT WHEEL REMOVAL” sec- tion.
Fork legs Refer to “FRONT FORK” section.
1 Cowling/Meter unit 1 Displace.
2 Front fender 1
3 Handle upper holder 2
4 Handle lower holder 1
5 Handlebar 1 Displace.
6 Nut 1
7 Upper bracket 1
8 Special washer 1
TIGHTENING PROCEDURE
• Initial tightening 38 Nm (3.8 mkg)
• Loosen 1 turn
• Final tightening 4 Nm (0.4 mkg)
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Page 177 of 382
STEERING
4-62
CHAS
Order Job name/Part name Q.ty Remarks 9 Upper ring nut 1 Refer to “STEERING REMOVAL/INSTAL-
10 Lower ring nut 1 LATION” section. 11 Ball race cover 1
12 Lower bracket/Steering axle 1
13 Bearing (upper) 1
14 Bearing (lower) 1 Reverse the removal procedure for instal-
lation.
TIGHTENING PROCEDURE
• Initial tightening 38 Nm (3.8 mkg)
• Loosen 1 turn
• Final tightening 4 Nm (0.4 mkg)
ProCarManuals.com
Page 178 of 382
CHAS
4-63
STEERING
(1) Handle upper holder
(2) Handle lower holder
(3) Spacer
(4) Nut
(5) Plate washer
(6) Upper bracket (7) Brake hose holder
(8) Plate washer
(9) Special washer
(10) Upper ring nut
(11) Lower ring nut
(12) Ball race cover (13) Bearings
(14) Steering lock
(15) Steering axle
(16) Wire guide
TIGHTENING PROCEDURE
• Initial tightening 38 Nm (3.8 mkg)
• Loosen 1 turn
• Final tightening 4 Nm (0.4 mkg)
ProCarManuals.com
Page 179 of 382
CHAS
4-64
STEERING
STEERING REMOVAL
1. Park the motorcycle on a level surface.
2. Raise the front wheel placing a suitable sup- port under the engine.
3. Remove:
•Front wheel
Refer to “FRONT WHEEL-REMOVAL”
section.
•Front fork
Refer to “FRONT FORK-REMOVAL” sec-
tion.
4. Remove:
•Front fender
•Cowling
•Handlebar
•Meter assembly
Ring nut wrench (3):
90890-01348
5. Remove:
•Steering axle nut (1)
Use the ring nut wrench (3).
WARNING
Support the motorcycle securely to prevent it
falling over.
6. Remove:
•Ring nut (upper) (1)
•Use the ring nut wrench (2)
Ring nut wrench (2):
90890-01268
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Page 180 of 382
CHAS
4-65
STEERING
Ring nut wrench (2):
90890-01268
7. Remove:
•Ring nut (lower) (1)
•Use the ring nut wrench (2)
WARNING
Support the steering axle to prevent it falling.
STEERING INSPECTION
1. Wash the bearings in solvent.
2. Inspect:
•Bearing (upper and lower) (1)
Corrosion/Damage ➔Replace races and
bearing.
Install the bearings in the races. Spin the
bearing by hand.
If the bearing rises or fails to run freely in
the race, replace bearing and race.
3. Inspect:
•Steering axle (1)
Bend/Damage ➔Replace.
STEERING INSTALLATION
1. Install:
•Bearing (1)
•Ball race cover (2)
NOTE:
Apply lithium soap-base grease to the bearing
and ball race cover lip.
2. Install:
•Lower bracket (1)
NOTE:
Apply lithium soap-base grease to the bearing.
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Page 181 of 382
4-66
CHASSTEERING
3. Install:
•Ring nut (lower) (1)
Use the ring nut wrench (2).
Ring nut wrench: 90890-01268
NOTE:
Apply the lithium soap-base grease to the steer-
ing axle thread.
Lower ring nut tightening steps:
•Tighten the ring nut (1) using the ring nut
wrench.
Ring nut (lower)
(initial tightening): 38 Nm (3.8 mkg)
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
•Loosen the ring nut completely and retighten
it to specification.
WARNING
Do not tighten excessively.
Ring nut (lower)
(final tightening): 4 Nm (0.4 mkg)
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
4. Check the steering axle by turning it lock to lock. If there is any binding, remove the steer-
ing axle assembly and inspect the steering
bearings.
5. Install:
•Ring nut (upper) (1)
•Special washer (2)
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