44
2.Familiar trouble about the engine and the way of the elimination
Position
Trouble
Reason
The way of eliminating the trouble
1. The CDI device is bad
2. The pulse apparatus is bad
3. The wire is not linked or the joint is loose.
1. Replace CDI
2. Replace the pulse apparatus
3. Link all the wires
The engine can
not be started
1. The spark plug is damp
——
There is overmuch oil in the carburetor
——
The assistant starting device is bad
——
The throttle valve is over opened
without measure
——
The air filter is dirty
2. The spark plug is blocked by dirt
1.
——
Release the oil in the carburetor
——
Inspect and repair or replace the assistant
starting device
——
Adjust the opening limit of the throttle valve
——
Clean the air filter
2.Clean out the dirt
Cylinder
head/
Valve
The pressure is low
It is difficult to start
the engine
The working state is
abnormal when the
engine rotates at a
low speed
1. The cylinder head
Leaks or the sealing ring is damaged
The cylinder head bends or is distorted
2. Valve
The valve adjustment is abnormal
The valve is burned-out or bends
The valve spring is broken off or the
springiness is abnormal
1.Replace the sealing ring or the grommet
Replace the cylinder head
2.Adjust the valve gap
The air intake/The air exhaust
:
0.14mm
Replace the valve
Adjust the valve cam chain
Replace the valve spring
Summary of Contents for QM50QT-6
Page 1: ...1 The catena comprise type QM50QT 6 QM50QT 6D QM50QT 6N QM50QT 6R QM50QT 6G QM50QT 6S ...
Page 2: ...2 QM50QT 6V ...
Page 6: ...6 Please write down the numbers here for future reference Frame Serial No Engine Serial No ...
Page 55: ...55 SPECIFICATIONS ...
Page 56: ...56 WIRINGDIAGRAM ...