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Troubleshooting
This section makes it possible to find the solutions to use in troubleshooting.
For each breakdown, a list of the possible causes and respective interventions is given.
Engine
Poor performance
Possible Cause
Fuel nozzles or cock clogged or dirty
Excess of encrustations in the combustion chamber
Lack of compression wear of the piston rings or cylinder
Exhaust pipe clogged due to excessive encrustations
Air filter blocked or dirty
Starter inefficient (stays on)
Clutch slipping
Defective mobile pulley sliding
Driving belt worn
Carburettor nozzles clogged
Fuel filter on vacuum operated cock blocked
Roller wear; Presence of oil; Dirt
Rear wheel spins at idle
Possible Cause
Idling rpm too high
Clutch fault
Air filter housing not sealed
Starting difficulties
Possible Cause
Carburettor nozzles clogged or dirty
Faulty fuel cock
Starter inefficient
Defective spark plug or with incorrect electrode gap
Battery flat
- Engine flooded.
POOR PERFORMANCE
Dismantle, wash with solvent and dry with compressed air
Replace the exhaust pipe and check the carburation and mixer
Check the mechanical sliding, continuity of the circuit, the pres-
Check the centrifugal brake shoe assembly and /or clutch bell
Check the parts, change the faulty parts and lubricate the driv-
en pulley using only Montblanc-Molibdenum Grease (dis.
Dismantle, wash with solvent and dry with compressed air
Check the cap with filter is fitted to the transmission cover;
clean the speed variator, replace the rollers if worn out
REAR WHEEL
Check the idling speed and, if necessary, adjust the C.O.
Check the spring/friction mass and the clutch bell
Correctly refit the filter housing and replace it if it is damaged
DIFFICULTY STARTING
Dismantle, wash with solvent and dry with compressed air
Check that, at ignition and with throttle untwisted, no petrol
flows out the delivery pipe; otherwise, replace the vacuum-op-
Check: electric wiring, circuit continuity, mechanical sliding and
Check and if necessary replace the spark plug and the elec-
Check the state of the battery. If it shows signs of sulphation
replace it and bring the new battery into service charging it for
eight hours at a current of 1/10 of the capacity of the battery
Start the vehicle keeping the throttle fully open alternately mak-
ing the engine run for approx. five seconds and stopping for
other five seconds. If however it does not start, remove the
spark plug, the engine over with the throttle open being careful
Operation
Remove the encrustations
Check the worn parts and replace them
timer
Clean according to the procedure
ence of power and electrical wiring
and replace if necessary
498345) grease
Replace
Clean the cock filter
Operation
Operation
erated cock
power supply
trode gap
itself
TROUBL - 37
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