ZHEJIANG KAYO MOTOR CO., LTD.
www.kayomoto.com
- 63 -
Good spark plug
The spark plug cap is
faulty
The power circuit is
faulty
The engine performs
poorly at high speeds
Check the ignition
timing and valve
clearance
Incorrect
The ignition controller
is faulty
Improper valve
clearance adjustment
The magneto is faulty
Valve clearance and
ignition timing are
correct
/
Disassemble the
connection of the fuel
pipe of the carburetor
and check if the fuel
pipe is blocked
Insufficient fuel flow
The fuel tank has run
out
Blocked fuel pipe
The fuel pipe has
sufficient flow
Blocked fuel tank cap
vent
Check if the filter and
carburetor nozzle are
blocked
Blockage
Blocked carburetor
measuring hole
Unblocked
Float stuck
Filter blocked
Check gas timing
Incorrect
Adjust gas timing
Correct
/
Check valve spring
pressure
Insufficient Pressure
Worn or broken valve
spring
The engine has
abnormal noise
Check whether there is
abnormal noise in the
valve
Abnormal noise in the
valve
Valve clearance is too
large
Valve wear
Check whether there is
abnormal noise in the
cylinder
Cylinder has
abnormal noise
Piston and cylinder
wear
The small end holes
of the piston pin and
connecting rod are
worn
Crank pin and
connecting rod large
end wear
Check whether the
timing chain produces
Abnormal noise in the
chain
Camshaft wear
Timing driven
