Fault Finding - SDMO SH 4000 Manuel D'utilisation Et D'entretien

7.6. Checking the spark plug (diagram E)
Remove the spark plug cap and use a spark plug spanner to remove the spark plug.
Visually inspect the spark plug and discard it if the electrodes are worn or if the insulation is split or chipped. If it is to be re-used,
clean the spark plug with a wire brush.
Measure the electrode gap with a feeler gauge. The electrode gap should be from 0.70 to 0.80 mm. Check that the spark plug
washer is in good condition and screw the spark plug in by hand, in order to avoid damaging the threads.
After fitting the spark plug, tighten it with a spark plug spanner to secure the washer.
Note: when fitting a new spark plug, tighten it by 1/2 turn after it is in place, in order to press the washer tightly. For the
installation of an old spark plug, tighten it by a 1/8–1/4 turn after it is in place, in order to press the washer tightly.
7.7. Checking bolts, nuts and screws
Daily, detailed checks of all nuts, bolts and screws are essential in order to prevent any accidents or breakdowns.
Inspect the generating set as a whole before and after each use.
Tighten any loose nuts or screws.
NB: the tightening of cylinder head bolts should be carried out by a specialist. Contact your local agent.
7.8. Cleaning the generating set
Remove all dust and debris from around the exhaust and clean the generating set using a cloth and a brush (cleaning with a water
jet is not recommended, and cleaning with high-pressure cleaning equipment is forbidden).
Carefully clean the motor air inlets and outlets and the alternator.
Check the general condition of the generating set and, if necessary, replace any faulty parts.
8. Storing the generating set
Generating sets, which are to remain unused for a long period of time must undergo certain procedures, in order to keep them in good
condition. Check that the storage area is not dusty or damp. Clean the exterior of the generating set and apply a rustproofing product.
Close the fuel tap (O position), remove the sediment bowl and drain it.
Open the fuel tap (I position) and drain the fuel from the tank into a suitable container.
Refit the sediment bowl and tighten fully.
Drain the carburettor by loosening the drain screw. Collect the fuel in a suitable container.
Change the motor oil.
Remove the spark plug and pour about 15 ml of oil into the cylinder, then refit the spark plug.
Turn the engine using the starter handle with the motor switch in the "O" position.
Clean the generating set and cover the motor to protect it from dust.
Store the generating set in a clean, dry place.

9. Fault finding

The generating set is being charged during start-up
Fuel level too low
The motor will not
The fuel tap is closed
start
Fuel supply blocked or leaking
Blocked air filter
Control in OFF position or "О"
The motor cuts out
Blocked ventilation inlets
Possible overload
Circuit breaker tripped out
Faulty circuit breaker
No electric current
Faulty plug sockets
Faulty appliance supply lead
Faulty alternator
Circuit breaker
trips out
Faulty equipment or lead
Probable causes
Probable causes
Probable causes
Probable causes
Remedial action
Take it off charge
Fill up with fuel
Open the fuel tap
Have the system repaired
Clean the air filter
Switch the control to ON or "I"
Remedial action
Clean the air inlet and outlet guards
Check the load
Remedial action
Reset the circuit breaker
Have it checked, repaired or replaced
Have it checked, repaired or replaced
Change the leads
Have it checked, repaired or replaced
Remedial action
Have it checked, repaired or replaced