Mash Fifty 50CC - Engine Operation Problems

Table of Engine Troubleshooting
Trouble Cause Remdy
Engine cannot be started or stalls
suddenly
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
There is fuel in car
buretor
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