Qingqi QM110GY, Руководство пользователя

Страница: 44 / 48

-43-
Table of Engine Troubleshooting
Trouble Cause Remedy
Engine
can
not
be s
tar
ted
or
stalls
su
dde
nly
No fuel in
carburetor
No fuel in fuel tank
Fuel tank valve not opened
Fuel tank valve clogged
Float chamber needle valve
hole clogged
Main jet orifice clogged Refueling
Open the valve
Clean fuel tank and fuel tank
valve
Disassemble and clean the
carburetor
Disassemble and clean the
carburetor
Ther
e is fuel
in
car
b
uretor
Sparking
normal in
high voltage
cable and no
sparking in
spark plug
Oil stained spark plug
Broken spark plug magnetic
core or broken electrode
Carbon deposit in spark plug
electrode
Incorrect spark plug gap Remove, clean and dry it
Replace spark plug
Clean out carbon deposit
Adjust the gap.
Normal
sparking to
spark plug,
poor
cylinder
compression
Leaking cylinder head gasket
Loose spark plug
Seized piston ring
Excessively worn piston or
broken piston ring
Serious cylinder wearing
Leaking intake pipe
Damaged crankshaft sealing Tighten screw or replace gasket
Tighten spark plug
Clean off carbon deposit in
piston ring and ring groove
Replace piston and piston ring
Replace cylinder body
Tighten or replace rubber ring
Replace sealing
A
bnor
m
al eng
ine
oper
at
ion
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
Unstable engine
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 riding over a long
time
Over loaded riding or extended
riding 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