LONCIN LC3500i - Abnormal Exhaust Colors

Chapter IV Disassembly & Repair
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4-1-5 Abnormal exhaust colors
(Refer to Section 3-2)
(Refer to Section 4-4-1)
(Use new fuel oil of specified quality)
(Use new fuel oil of specified quality)
(Normal starting)
(Disconnect surplus load)
(Refer to Section 4-4-4)
(Refer to Section 3-3)
Abnormal
exhaust color
Black
White
Fault of carburetor
Overloaded
Air filter excessively dirty
Low temperature of engine
Fuel oil is of poor quality/polluted
Fuel oil is of poor quality/ polluted
Wear of cylinder/piston/piston ring
Excessive engine oil
Blue
(Refer to Section 4-4-2)
Fault of cylinder head