CJ750 motorcycles require the correct running in procedure to ensure optimum
performance and durability. It is well worth taking extra care during the
first 3000
km of operation to ensure that moving parts are given the opportunity to bed
in
properly. Try and avoid freeway driving during the first two phases of the
running in
schedule if possible. When riding on a freeway during the break in period,
avoid
maintaining the same load and RPM for extended distances. During the run in
period
it is good practice to continuously increase speed slowly to the maximum speed
allowable, and then slowly decelerate repeating this in a continuous cycle.
Incorrect
running in can result in to reduced performance and engine life, as well as
higher
fuel and oil consumption.



Running in can be divided into three phases -



Phase

Required operating conditions

0 - 500 Km



Light load and low RPM operation

500- 2000 Km



Moderate Load and moderate RPM operation

2000 - 3000 km



Normal operation but avoiding full load or high RPM operation



Recommended maximum speeds during the first two phases are –



Maximum Speed (Km/h)

Break in distance (Km/h)



0 - 500

500 - 2000

Gear - 1st

15

15

- 2nd

30

35

- 3rd

40

50

- 4th

60

70



In order to assist you in limiting the load and speed during the running in
period,
the caps of the two carburetors are provided with stop screws (see Fig.2).
These
stops limit the height of throttle valve. After each phase of the running in
period,
the stop screw should be cut off at the slotted position as shown alongside.





Although the top screw does help to limit load and speed, it is still
necessary to take
care and operate the motorcycle carefully in running in period. Long distance
driving
is not advisable during the 0 to 500-km running-in period to avoid build up of
excessive engine temperatures. The maximum allowable cylinder head temperature
is 180 degree Celsius. The engine oil must be checked daily and must be
replaced at
500km.

On completion of running-in period, re torque the cylinder head bolts with a
hot
engine.



(Note: Use of synthetic oils is not recommended, during the running in
period).