14. Checks & Adjustment
Inspection of Clutch Engagement and Lock-up
CF188 engine is equipped with a centrifugal type
automatic clutch.
Before checking the initial engagement and clutch
lock-up two inspection checks must be performed to
thoroughly check the operation of the drive train.
I Initial Engagement Inspection
z Connect tachometer to ignition coil
z Start engine
z Shift gear lever to “High” position
z Slowly increase throttle and note down the engine
speed (r/min) when the vehicle starts to move
forward.
Engagement speed:1800r/min～2400r/min
If the engagement speed is out of the above range,
check the following:
z Clutch shoes
z Clutch shoe wheel
z Primary and secondary sheave
Refer to Chapter 12 for inspection of clutch
II Clutch Lock-up Inspection
z Connect the tachometer to ignition coil;
z Start the engine;
z Shift gear lever to “High” position;
z Apply front and rear brakes as firmly as possible;
z Fully open the throttle for a brief period and note the
maximum engine speed obtained during the test
cycle.
Lock-up Speed: 3300r/min～3900r/min
Warning:
Do not apply full power for more than 5 seconds or
damage to clutch or engine may occur.
If the lock-up speed is out of the above range, check the
following:
z Clutch shoes
z Clutch wheel
z Primary and secondary sheave
Refer to Chapter 12 for inspection of clutch
Tool: Tachometer
14-13
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