Excessive Oil Consumption/Exhaust Smoke; Insufficient Lubrication Pressure; Transmission And Brakes Troubles; Clutch Grabbing Or Performing Inadequately - PIAGGIO X7 250ie Service Station Manual

X7 250ie
Possible Cause
Faulty spark plug or incorrect ignition advance
Battery flat
Intake coupling cracked or clamps incorrectly
tightened

Excessive oil consumption/Exhaust smoke

Possible Cause
Wrong valve adjustment
Overheated valves
Misshapen/worn valve seats
Worn cylinder, Worn or broken piston rings
Worn or broken piston rings or piston rings that
have not been fitted properly
Oil leaks from the couplings or from the gaskets Check and replace the gaskets or restore the cou-
Worn valve oil guard
Worn valve guides

Insufficient lubrication pressure

Possible Cause
By-Pass remains open
Oil pump with excessive clearance
Oil filter too dirty
Oil level too low
Transmission and brakes

Clutch grabbing or performing inadequately

IRREGULAR CLUTCH PERFORMANCE OR SLIPPAGE
Possible Cause
Faulty clutch
Replace the spark plug or check the ignition circuit
Check the charge of the battery, if there are any
sulphur marks, replace and use the new battery
following the instructions shown in the chapter
Replace the intake coupling and check the clamps
EXCESSIVE CONSUMPTION
Remove the head and the valves, grind or replace
Replace the piston cylinder assembly or piston
Replace the piston cylinder unit or just the piston
POOR LUBRICATION PRESSURE
Check the By-Pass and replace if required. Care-
Perform the dimensional checks on the oil pump
Restore the level adding the recommended oil
Check that there is no grease on the masses.
Check that the clutch mass contact surface with
the casing is mainly in the centre with equivalent
characteristics on the three masses. Check that
the clutch casing is not scored or worn in an anom-
Operation
components
are tightened
Operation
Adjust the valve clearance properly
the valves
Replace the head assembly
rings
rings
pling seal
Replace the valve oil guard
Check and replace the head unit if required
Operation
fully clean the By-Pass area.
components
Replace the cartridge filter
type
Operation
alous way
Troubleshooting
TROUBL - 3