8
6.Percussion noise when running, causes and solutions
Piston, cylinder, piston ring wear
Connecting rod, Piston pin and pin
hole wear
Metal percussion
when deflagration
Carbon deposit in cylinder
Remove the carbon deposit
Spark plug electrode gap improper
Find the cause and
troubleshooting
Improper adjustment of valve lash
Flywheel and crankshaft connection
loose
Ⅵ.Specification
Single cylinder, air-cooled, 4-strock, OHV
Reference inlet air
pressure(Kpa)
Noise level at seven
meters(db)
110 220 380 110/220 120/240