bar 670 - Troubleshooting Stalling and Overheating

·
25
·
4. STOP SUDDENLY WHEN RUNNING
TROUBLE CAUSE REMEDY
Stop suddenly
when running.
Fuel supply
system
Fuel is nished Rell fuel
Carburetor is clogged Check fuel line and dredge
Float is leaking Repair
Needle valve is sticked Dismantle oat chamber and eliminate it
Ignition
system
Spark plug is punctured, or short-
circuited by carbon deposit
Replace spark plug
Side electrode of spark plug is dropped
out
Replace spark plug
High-tension wire is dropped out Weld on
Ignition coil is punctured or short-
circuited
Replace ignition coil
Parking wire is located on engine body Find out meeting and insulate
The other
Cylinder is seriously scored and valve
dropped out
Repair or replace damaged parts
5. GASOLINE ENGINE IS OVERHEAT
TROUBLE CAUSE REMEDY
Gasoline engine is
overheat
Oil insufcient or wrong oil ratio in the gasoline Rell engine oil
Exhaust pipe blocked up Clean exhaust pipe
Shroud leaking Repair damaged part
Cooling ns blocked by foreign matter Clear cooling ns
Cooling fan i loosen and misfunction Reinstall well
Connection rod deformation to make piston and
cylinder bushing side wear
Replace connection rod
Cylinder or piston or piston ring is worn to make
hunting between cylinder and crankcase
Replace the worn parts
Improper adjustment of engine governor to produce
speed high.
Readjust engine governor
Crankshaft main bearing burnt out Replace main bearing
The gasoline engine should be kept about 80 ~ 110
℃
temperature around the outlet of the shroud. If the temperature is too
high, it will indicate the gasoline engine overheating.
TROUBLESHOOTING