QJMOTOR SRT 550 Manual Del Usuario página 46

negative electrode of the battery and the sensor
connector installed on the throttle valve; remove the
throttle cable, the hose connected to the air filter and
the intake manifold, and remove the throttle body.
Spray the cleaning agent on the inner wall of the
throttle body, and brush off the dust and carbon
deposit with a brush.
After cleaning, reverse the operation, install the
throttle body, and ensure that all components are in
place, and try to start the engine successfully.
Note
Do not allow impurities to block the bypass.
● Drive Chain
The service life of the drive chain depends on proper
lubrication and adjustment. Improper maintenance
may cause premature wear of drive chain and
sprockets. In severe operating conditions, frequent
maintenance is necessary.
Adjustment of the drive chain (double swing
arm):
Every 1000km, adjust the drive
chain so that the chain sag is
28 to 35mm. Depending on
your driving situation,
chain may need to be adjusted frequently.
Please adjust the chain
as follows:
(1) Support
motorcycle with a support
frame
(2) Loosen the rear axle
nut ①
(3) Loosen the lock nut ②
(4) Rotate the adjusting bolt ③ to the right or left to
adjust the looseness of the chain between 28mm
and 35mm.
40
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