7、FRONT FORK COMPONENT 47
CHK
ADJ
NO. PART NO. PART NAME QTY CAUTION
1 1251300-045000 ZT250-S upper plate decorative nut (chrome plated) 1 100N·m
2 1251500-050000 ZT250-S upper plate gasket φ18.5×φ39×1 1
3 1250205-023000 GB70.1 Hexagonal M8×35 (environmental color zinc) 2
～
4 1134100-007000 ZT250-S adjusting nut lock washer 1
5
1251300-046093 ZT250-S direction column adjustment nut M24X1 2
6 1244100-015000 ZT250-S adjustment nut pad 1
7
1224100-005000 Dust cover on ZT250-S direction column 1
8
1130900-024000 ZT250-S shaft ring 1
9
1130900-022000 ZT250-S Siamese Steel Ball 2
10
1130900-026000 ZT250-S seat 2
●When the front fork has a slight sway or the steering wheel swings when braking
Fir
st check whether the front tire pressure is the recommended air pressure at normal temperature: standard 250 kPa.
If
it is lower than the recommended air pressure, first inflate the front tire pressure to 350 kPa, then deflate to 250 kPa.
Whether the test is released. If the front wheel is otherwise lifted and turned to check the tire tread, if it is eccentric or
deformed, the front tire needs to be replaced. If no, continue to operate.
●Check steering device
Ra
ise the front wheel and shake the lower part of the front fork by hand to check if the steering shaft is loose or the left and
right rotation is not flexible.
Adjust the
adjustment nut:
Re
move the trim nut (1) with a wrench and remove the washer (2); remove the bolt (3) with a hexagon socket tool. Wrap
the direction and upper panel assembly with a clean cloth and place it to prevent scratches. Remove the lock washer (4); use
the special four-jaw sleeve or hook wrench to remove the upper adjustment nut (5) and remove the rubber pad (6).
If the steering resistance is too large, turn the bottom adjustment nut (5) counterclockwise. If the brake is slightly swayed
or the steering swings, it will rotate clockwise. The torque is about 14N.m, so as to lift the front wheel to rotate left and right
without any stuck. It is appropriate.
Whe
n reassembling, the uppermost adjustment nut only needs to be screwed to the bottom nut groove. It should not be too
tight to avoid excessive deformation of the rubber pad (6); the torque of the decorative nut (1) is 100N.m.
●Steering bearing
If
the above operation still cannot eliminate the excessive steering resistance or stuck, proceed as follows:
Remove the adjusting nut (5), remove the upper dust cover (7), the shaft ring (8), the connecting steel ball (9), remove the
direction column & front shock absorber & front wheel assembly, check the shaft ring and the connected steel ball for
abnormal wear or rust. . Also check the seat (10) in the riser in front of the frame for abnormal wear or rust. The newly
replaced one-piece steel ball should be evenly coated with grease, 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.
Fig. 4 FRONT FORK
COMPONENT
Steering adjustment
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