Chapter IV Disassembly & Repair
- 12 -
4-1 Fault diagnosis
4-1-1 Difficulty in starting
(Refer to Section 4-4-2)
Ignition system
Compression
system
(Refer to Section 4-4-1)
(Refer to Section 4-4-2)
(Refer to Section 4-4-2)
(Refer to Section 4-4-2)
(Refer to Section 3-7)
(Refer to Section 4-4-1)
(Refer to Section 4-5-6)
(Refer to Section 4-4-3)
(Refer to Section 4-4-3)
(Refer to Section 3-6)
(Refer to Section 3-2)
Difficulty in
starting
Fuel system
(Refer to Section 3-3)
(Refer to Section 4-4-4)
(Refer to Section 3-4)
(Add fuel oil into the fuel tank)
Fuel oil level too low
Fuel filter blocked
Improper adjustment of carburetor
Air filter dirty
Engine oil level two low
Improper spark plug gap
Fault of spark plug cap
Fault of ignition coil
Fault of starting switch
Fault of engine-oil protective system
Improper valve clearance
Cylinder-head gasket damaged
Loosen fastening bolt of cylinder head
Valve fault
Wear of cylinder/piston/piston ring
Excessive wear of camshaft
(Re-start after stopping for several minutes)
Excess fuel oil flowing into the engine
