PIAGGIO Beverly 300 i.e., Service Station Manual, Page: 54 / 333

This section makes it possible to find what solutions to apply when troubleshooting.
For each failure, a list of the possible causes and pertaining operations is given.
Engine
Poor performance
POOR PERFORMANCE
Possible Cause Operation
Fuel pump Check the injection load relay
Excess of scales in the combustion chamber Descale the cylinder, the piston, the head and the valves
Incorrect timing or worn timing system elements Time the system again or replace the worn parts
Silencer obstructed Replace
Air filter blocked or dirty. Remove the sponge, wash with water and car shampoo, then
soak it in a mixture of 50% petrol and 50% specific oil. Press
with your hand without squeezing, allow it to drip dry and refit.
Oil level exceeds maximum Check for causes and fill to reach the correct level
Lack of compression: parts, cylinder and valves worn Replace the worn parts
Drive belt worn Replace
Inefficient automatic transmission Check the rollers, the pulley movement and make sure the
drive belt is in good conditions; replace the damaged parts and
lubricate the moveable driven pulley with specific grease.
Clutch slipping Check the clutch system and/or the bell and replace if neces-
sary
Overheated valves Remove the head and the valves, grind or replace the valves
Wrong valve adjustment Adjust the valve clearance properly
Valve seat distorted Replace the head unit
Starting difficulties
DIFFICULT STARTING
Possible Cause Operation
Rpm too low at start-up or engine and start-up system dam-
aged
Check the starter motor, the system and the torque limiter
Incorrect valve sealing or valve adjustment Inspect the head and/or restore the correct clearance
Engine flooded Try starting-up with the throttle fully open. If the engine fails to
start, remove the spark plug, dry it and before refitting, make
the engine turn so as to expel the fuel excess taking care to
connect the cap to the spark plug, and this in turn to the ground.
If the fuel tank is empty, refuel and start up.
Air filter blocked or dirty. Remove the sponge, wash with water and car shampoo, then
soak it in a mixture of 50% petrol and 50% specific oil. Press
with your hand without squeezing, allow it to drip dry and refit.
Faulty spark plug or incorrect ignition advance Replace the spark plug or check the ignition circuit components
Flat battery 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
Intake coupling cracked or clamps incorrectly tightened Replace the intake coupling and check the clamps are tight-
ened
Excessive oil consumption/Exhaust smoke
EXCESSIVE CONSUMPTION
Possible Cause Operation
Wrong valve adjustment Adjust the valve clearance properly
Overheated valves Remove the head and the valves, grind or replace the valves
Troubleshooting
Beverly Tourer 300 i.e.
TROUBL - 54