Checking The Spark Plug - SDMO VX 200/4 H-C Betriebs- Und Wartungsanleitung

7.2. Cleaning the sediment bowl
Undo the six bolts (no. 1, Fig. I) on the noise deflector (no. 2, Fig. I) then remove the deflector.
Close the fuel tap (no.14, Fig. A).
Position a suitable container and a funnel under the carburettor as shown in Fig. D.
Unscrew the plug (no. 1, Fig. D) to drain the fuel.
Refit and retighten the plug.
Remove the sediment bowl (no. 1, Fig. E) and the seal (no. 2, Fig. E).
Wash the bowl with a non-flammable solvent or solvent with a high flash point. Dry it completely.
Refit the seal and the bowl.
Tighten the bowl.
Open the fuel tap and check that there are no leaks.
Refit the noise deflector in the reverse order to removal.
7.3. Renewing the motor oil
Drain the oil when the engine is still warm, to ensure that drainage is rapid and complete.
Place an appropriate container under the drain plug (no. 3, diag. B), remove the dipstick/filler plug (no. 1, diag. B) and the drain plug.
On completion, screw in and tighten the drain plug.
Fill the engine oil sump with the recommended oil, then check the level.
Reposition the dipstick/filler plug and tighten.
After filling, check that there are no oil leaks.
Wipe off any trace of oil with a clean cloth.
7.4. Cleaning the spark arrester
Loosen the three mounting bolts (no. 1, fig. F) and (no. 2, fig. F) from the exhaust silencer (no. 3, fig. F), then remove the latter.
Loosen the four bolts (no. 4, fig. F) and (no. 5, fig. F) holding the silencer guard (no. 6, fig. F) and then remove silencer guard.
Remove the mounting bolt (no. 7, fig. F) from spark arrester (no. 8, fig. F) and place it down.
Using a wire brush, remove the carbon deposits from the spark arrester screen.
Note: The spark arrester must have no holes or cracks. Replace if necessary.
Refit the spark arrester, the guard and the exhaust silencer in the reverse order to removal.

7.5. Checking the spark plug

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.
7.6. 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.
7.7. 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.