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| Gear
Adjustment:
Chang
Jiang 750 transmissions often slip gears so this is
quite a common problem that can easily be corrected,
however it does require some playing around. Below I
have recommendations on maintenance from Jim Bryant
(www.mycj750.com
or jim@way2prc.com)
and also from Zhang. ZMW is on MSN almost 24/7 at: cj750net@hotmail.com
For those that are do not have a hotmail address, you
can sign up to MSN Passport and use your mail address
to chat on MSN Messenger.
Do
note that the gear adjustment pins are very sensitive
so no rotation should be more than a 1/4 turn either
way. In most cases try different adjustments till it
is shifting properly. |
Jim's
Recommendation:
Many
CJ750 sidecars have a problem with the transmission
jumping out of gear. The most common cause of this is
a misadjusted foot shifter.
If the problem is with 1st or 2dn gear, adjust slightly
the lower adjusting screw and tighten the lock nut.
Be sure not to adjust more than ¼ turn. Then
tighten it and test ride the bike.
If it’s in the higher gears, then adjust the upper
adjusting screw and again tighten the lock nut. You
will have to ride the sidecar and try out the adjustments
each time to see if it is properly adjusted.
This adjustment is normally set by the factory and they
advise against moving either screw. |
First
Gear |
Second
Gear |
Third
Gear |
Fourth
Gear |
Neutral |
When
shifting gears the gear shift handle on the right
side should travel equal distance between each shift.
If the gears are slipping you will notice that the
gear shift handle will have more movement or in some
cases not even move when you are shifting gears with
the pedal. It is recommended that you prop your CJ750
up so the back wheel is off the ground and shift gears
and run the engine to see if the it is over shifting
or under shifting. |
 |
Rotate
screws only 1/4 turn for each adjustment. (Note numbers
for reference)
Make sure the bolt is tighten after adjustment.
Be
careful of shops that just want to replace everything
before making any adjustments to correct your gear
slipping.
Play
around with the adjustments and you will be able to
feel the difference in the shifting. |
Zhang's Recommendation:
1) When in high gear going to low gear, the gear shift
rod does not move or has very little movement; Loosen
top screw (A) by a 1/4 turn counter clockwise.
2)
When in high gear going to low gear, and the shift
rod will move more then its normal position, the gear
goes to neutral; Tighten top screw (A) by a 1/4 clockwise
turn.
3)
When going from low gear to high gear, the shift rod
does not move and the transmission goes into neutral;
Loosen top screw (B) by a 1/4 turn counter clockwise.
4)
When going from low gear to high gear, the shift rod
goes more than the normal position; Tighten top screw
(B) by a 1/4 clockwise turn.
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