KEEWAY FACT 50 4T Maintenance Manual page 155

18.5
Measures when the idle speed emission value exceeds the standard
(Four-Stroke)
Periodic inspection (maintenance plan )
Measure idle emission (note 1)
Adjust Carburetor (note2)
Remove and clean the carburetor
(SJ, MJ, SAJ, MAJ, etc.)
Replace the carburetor
Dismantle
engine
•Valve（leakage）
•Piston（abrasive）
•Combustor（cleaning）
Note 1: measure it with the idle speed measurement program.
Note 2: adjust the engine speed with stop screws to live up to requirements and measure CO/HC at the idle speed.
and repair
Satisfactory
Satisfactory
Satisfactory
Satisfactory
Qualified for
Satisfactory
Satisfactory
155
delivery