Perform regular inspection（Repair and maintenance plan）
Measure Idle exhaust (Note 1）
Adjust carburetor（Note 2）
Disassemble and clearn carburetor
（SJ, MJ, SAJ, MAJ, etc.）
Replace Carburetor
Disassemble and repair engine.
• Valve (Leak)
• Piston (Worn)
• Combustion chamber（clean）
For Delivery.
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Classification Equipment Constituted Part Desired Function
Emission control system Catalytic device Catalytic converter
Oxidize CO, HC and NO
X
.
17.4 Solutions to Idle Exhaust Exceeding Specified Value (4-stroke)
Note 1: Measure according to the idle speed measuring procedures.
Note 2: Adjust with lock screw engine rpm to the specified and measure idle CO/HC.
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