KEEWAY RK V125 C - Faults Related to Lack of Power

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Cylinder, piston, piston ring failure: the fuel contains gum or wear
Check or replace
Air intake pipe leak: use time is too long
Check or replace
Valve timing failure
Check or replace
Lack of
power
Valve piston
Excessive carbon deposits on intake and exhaust valves and pistons:
poor fuel quality and poor oil quality
Repair or replace
clutch
Clutch slip: poor oil quality, long use time, overload
Adjust or replace
Cylinder block, ring
Cylinder block and piston ring wear: poor oil quality, long use time
Change the oil
Brake
Brake separation is not complete: the brakes are too tight
Adjustment
Chain
Chain too tight: improper adjustment
Adjustment
engine
Engine overheating: The mixture is too rich or too thin, and the
quality of oil and fuel is poor.
Adjust or replace
Spark plug
There are obstructions etc.
Adjust or replace
Intake pipe
Improper spark plug gap, normal 0.8-0.9 mm
Adjust or replace
Cylinder head
Air intake pipe leak: use time is too long, adjust or replace
Check or replace
Electrical system
Cylinder head or valve leak
Check or repair