ZHEJIANG KAYO MOTOR CO., LTD.
www.kayomoto.com
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Reinstall the valve cover, magneto plug and timing plug.
NOTE
: The valve clearance should be checked and adjusted when the engine is cold.
COMPRESSION PRESSURE CHECK
The inspection is carried out for the first 1000km and every 5000km.
The inspection steps are as follows:
1.
Let the engine run at idle speed and warm it up.
2.
Unscrew the spark plug.
3.
Install the pressure gauge and connector into the spark plug mounting hole and make sure
that the connection is firm.
4.
Turn the throttle handle to the fully open position.
5.
Start the engine several times with the starter motor and read the pressure gauge to show the
highest-pressure value of the engine cylinder.
Standard
1200~1250Pa
Minimum
1100Pa
Low pressure indicates the following faults:
Excessive wear of the cylinder wall.
The piston or piston ring is worn.
The piston ring is stuck in the ring groove. The valve is not properly engaged with the valve
seat.
The cylinder head gasket is damaged. When the engine compression pressure is lower than
the above limit value, the engine should be reinstalled, inspected and repaired according to
the specific conditions.
NOTE
: Before testing the compression pressure of the engine, make sure that the cylinder head
nuts and bolts are tightened according to the specified torque and the valve clearance is adjusted
correctly.
ADJUSTMENT OF CLUTCH CONTROL SYSTEM
In order to ensure that the clutch can be used correctly and the portability of operation, the user
should ensure that the clutch is in the engaged state in the normal state when adjusting, and is
never allowed to be in the half-clutch state.
