CSC TT250, Owner'S And Service Manual

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TT250 Owner’s and Service Manual
www.CSCMotorcycles.com
54
Item Symptom Cause Vehicle Effect Maintenance Action
Fork has oil leak at the
oil seal
Scratches found on
surface of fork
Poor fork action Replace fork or seal
Oil leak Oil seal abraded or
damaged
Poor fork action,
leaking fork
Replace oil seal
Fork becomes soft Fork oil low Poor fork action Add oil as required
Rear shock
absorber
Rear shock absorber soft Rear shock absorber
spring broken or soft
spring force
Rear suspension overly
soft
Replace rear shock
absorber
Defective rear shock
absorber
Rear shock absorber
leak
Rear suspension overly
soft, leakage
Replace rear shock
absorber
Aging, exposure to
contaminants
The rubber sheath
abraded or cracked
Rear suspension overly
soft or harsh
Replace rear shock
absorber
Steering System
The handlebar, fork yoke, and steering components should be inspected and adjusted periodically to
check for any abnormal conditions. The front forks should turn evenly from side to side with no
interference or looseness. Apply the front brake and rock the motorcycle back and forth. There should
be on looseness or clicking in the steering head area.
Steering Stem Bearing Adjustment
This section of the TT250 Owner’s and Service Manual addresses steering stem bearing adjustment. You
only need to do this if there is free play in the steering stem bearings, or if the bearings are adjusted too
tight. Sometimes you can detect this by applying the front brake when coming to a stop, or by rocking
the bike back and forth with the front brake applied. If you hear or feel clicking in the front end, it is
likely you need to adjust the steering stem bearings.
The best way to test for appropriate steering stem bearing
adjustment is to put the bike on a lift to get the front wheel
off the ground. Once the wheel is off the ground, grab the
front forks near the front axle and pull the front end back
and forth. If you feel any play and hear the steering stem
bearings clicking, the steering stem bearings are too
loose. Next, turn the front wheel from left to right and from
right to left. If you feel too much resistance (it’s a subjective
assessment), the steering stem bearings are too tight.
In the photos here, the fuel tank, the seat, and the rear body panels are removed. You don’t need to
remove these components for this maintenance activity. We had a TT250 with the panels removed and
we left the bike in that configuration for these instructions.