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TROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTING
EXCESSIVE OIL
CONSUMPTION
CAUSE
SOLUTION
PROBLEM
THE ENGINE WILL NOT
RUN AT IDLE SPEED
Clogged idle speed jet
Altered idle speed adjustment screws
Damaged spark plug
Faulty Ignition system
Disassemble the carburetor and clean the jet
Adjust the idle speed screws
Replace the spark plug
Have the ignition system checked
THE ENGINE DOES NOT
REACH FULL SPEED
The fuel overflows because the level is adjusted
too high or the float needle valve is dirty or worn
The carburetor jets are loose
The ignition timing is not correct
Disassemble the carburetor and check the height of the float
and the state of the needle valve, as described in the “Frame
and Engine Maintenance” chapter
Tighten the jets
Have the ignition timing checked
POOR ENGINE POWER
Fuel supply partially interrupted or dirty carburetor
Float not leakproof
Air filter very dirty
Exhaust system not leakproof, deformed or
fibreglass in the silencer packing damaged
Insufficient valve clearance
There is a loss of compression because the hand
decompressor hasn’t got enough free play (it remains
“tight”)
The ignition timing is not correct
Clean and check the fuel circuit and the carburetor
Replace the float
Clean or replace the air filter, contact a specialised workshop
Check the faulty parts on the exhaust system, replace the
fibreglass in the silencer
Adjust the valve clearance
Adjust the hand decompressor flexible cable command
Have the ignition timing checked
Fuel missing
Air leaks in the intake manifold
Clean and check the fuel circuit and the carburetor
Check the rubber manifolds between the filter case and the carburetor
and between the carburetor and head and tighten the clamps
THE ENGINE OVERHEATS
EXCESSIVELY
There is not enough fluid in the cooling system
Insufficient ventilation
Air in the cooling system
The radiator fins are very dirty
Foam in the cooling system
The radiator hose is bent
Fill with coolant (see “Frame and Engine Maintenance”) chapter,
check for leaks of the cooling system
Continue at sustained speed (it is possible to mount a fan optional)
Bleed the cooling system
Clean the radiator fins with jets of water
Replace the coolant, use good antifreeze
Shorten the radiator hose or replace it
The vent hose is bent
Engine oil level too high
Engine oil too thin (viscosity)
Position the vent hose or replace it
Check and correct the engine oil level if necessary
Use more viscous oil, see “Engine oil” chapter
ALL OF THE BULBS BLOW
UNEXPECTEDLY
The regulator is damaged
Remove the saddle and tank and check the connections of the
voltage regulator. Have the regulator checked in a specialised
TM workshop
LIGHTS, HORN AND
INDICATORS DO NOT
WORK
The lights cable fuse is burned out
Remove the left side panel and replace the lights cable 7.5A
fuse
THE BATTERY IS FLAT
The battery is not charged by the generator
Remove the saddle and check the regulator contacts. Have the
regulator and generator checked in a specialised TM workshop
TROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTING
ENGINE MISFIRINGS OR
BACKFIRES FROM THE
CARBURETOR
Содержание 2008 4 Stroke
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