Technical data

237
POSSIBLE CAUSE
WORK
REAR WHEEL TURNING WITH IDLE ENGINE
Idle rpm too high
Clutch failure
Adjust the engine idle speed and the CO%, if requi-
red.
Check clutch springs / masses
POSSIBLE CAUSE
WORK
Altered fuel characteristics Drain altered fuel and refuel.
STARTING DIFFICULTIES
Start up speed too low or starter system and
motor failure
Check the starter motor, the system and the torque
limiter.
Incorrect valve seal or wrong valve
adjustment
Inspect the head and/or set the correct clearance.
Flooded engine
Start up keeping the gas fully open. If the engine won’t
start, remove the spark plug, dry it and before repla-
cing it, start the engine to eject the excess of fuel, kee-
ping the cap connected to the spark plug and the latter
to earth. If fuel has finished; refuel and start up.
Automatic starter failure
Check: mechanical sliding, electric connection and
presence of power supply, replace if required.
Air filter clogged or dirty
Remove the sponge, wash with water and shampoo,
then impregnate it in a 50% mixture of fuel and spe-
cific oil, then press it without squeezing, let it drip and
replace it.
Faulty spark plug or incorrect ignition
advance
Replace the spark plug or check the ign’ition circuit
components
Dirty carburettor; feeding pump or vacuum
cock failure
Remove, wash with solvent, dry with compressed
air or replace
Flat battery
Check the battery charge level, in case of traces of sul-
phation, replace and start the new battery as instruc-
ted in section 4-13
Cracked intake union or strips not tightened
properly
Replace the intake union and check the strip tighte-
ning