7-FRONT FORK COMPONENT 38
CHK
ADJ
NO. PART NO. PART NAME QTY CAUTION
1 1251300-088000 Upper connecting plate decorative nut M22×1 1 100N·m
2 1251500-100000 φ22.5×φ39×1 gasket (chrome plated) 1
3 1250205-034093 GB70.1 inner hexagonal M8×30 (color Zinc) 2
4
1134100-007000 ZT250-S Adjusting nut locking washer
1
5
1251300-046093 Direction column adjusting screw nut M24×1
2
6 1244100-015000 ZT250-S Adjusting nut rubber pad 1
7 1244300-014000
ZT350-R upper dust cover
1
8
1130900-024000 ZT250-S shaft ring
1
9
1130900-022000 ZT250-S conjoined steel ball
1
10
1130900-026000 ZT250-S upper steel bowl
1
11
1134300-001000 ZT350-R lower seat ring
1
12
1134300-002000 ZT350-R conjoined steel ball
1
Fig.4 FRONT FORK
COMPONENT
●When the front fork is slightly swaying or when the direction handle is swung
Check if the pressure of the front tire is the recommended air pressure at room temperature: 270 kPa. If it is
lower than the recommended air pressure, the front tire pressure should be inflated to 350 kPa first, and then
deflated to 270kPa. If it is otherwise set the front wheel and turn to inspect the tire tread, if it is worn or
deformed, the front tire needs to be replaced. If no, continue to operate.
●Check steering device
Set up the front wheel and shake the lower part of the fork by hand to check if the steering shaft is loose or if
the left and right rotations are not flexible.
Adjust the adjustment nut:
Remove the trim nut ⑴ with a 30# ring spanner, remove the spacer ⑵, and remove the bolt ⑶ with 6# inner
hexagon socket. The direction of the upper board assembly wrapped with a clean cloth and then placed to
prevent scratches. Remove the lock washer ⑷; remove the upper adjustment nut ⑸ with a hook wrench and
remove the pad ⑹.
If the steering resistance is too large, turn the lower adjustment nut ⑸ counterclockwise. If the brake is
slightly swaying or swings, rotate clockwise. The torque is about 14N.m. It is appropriate.
When reassembling, the top adjusting nut only needs to be screwed to align with the bottom nut groove, so
as not to over-tighten to avoid excessive deformation of the pad ⑹; the torque requirement of the decorative
nut ⑴ is 100 N·m
● Steering bearing
If the above operation still can not rule out excessive steering resistance or stuck as follows:
Remove the adjusting nut ⑸, remove the upper dust cover ⑺, shaft ring ⑻, and connecting ball ⑼ and ⑿,
remove the directional column & front shock absorber & front wheel assembly, and check the shaft ring and
the connecting steel ball for abnormal wear or rust . At the same time, inspect the seat ring ⑽ and ⑾ in the
standpipe in front of the frame for abnormal wear or rust The newly replaced conjoined steel ball
should be evenly greased, pay attention to the amount of grease.
CAUTION:
●If the steering is adjusted too tightly, the steering force will be greater. If the steering is too loose,
the front of the motorcycle will be slightly shaken during braking, and adjustments must be made
according to the actual needs of the driver.
Steering adjustment
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