Abnormal engine operation
Abnormal
noise from
engine
. Serious worn out cylinder and
piston
. Serious worn out needle
bearings in small and big ends
of connecting rod
. Premature ignition
. Excessive carbon deposit in
combustion chamber
. Overheated spark plug
. Replace cylinder body and
piston
. Replace bearing and relate
parts
. Adjust ignition time
. Clean out carbon deposit
. Replace spark plug
operation
. Water or dirt in carburetor
. Clogged fuel passage
. Leaking crankcase
.Leaking connection between
carburetor and engine
. Over-rich or over-thin gas
mixture
. Clean the carburetor
. Clean or replace fuel pipe
. Replace sealing
. Tighten screw
. Adjust carburetor
Overheat
engine
. Low gear driving over a long
time
. Over loaded driving or long
time driving with heavy load
. Over-rich or over-thin gas
mixture
. Unqualified engine oil or
insufficient transmission oil
. Slipping clutch
. Too tight chain
. Unreleased brake
. Change gear position and
control time
. Control load-carrying and
rest from time to time for
cooling
. Adjust carburetor
. Replace with qualified
engine oil and fill oil to
transmission case
. Adjust free play or
replace clutch, friction
lining and spring
. Adjust tension
. Adjust brake clearance
(Refer to the warranty book provided by the authorized MASH dealer.)
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