DUROMAX XP10000EH Manual page 20

Fuel Sediment Cup Cleaning
The sediment cup prevents dirt or water, which may be
in the fuel tank from entering the carburetor. If the
engine has not been running for a long time, the
sediment cup should be cleaned.
1 Turn the fuel valve lever to the OFF position.
Remove the sediment cup, O-ring, and filter.
2 Clean the sediment cup, O-ring, and filter in
nonflammable or high flash point solvent.
3 Reinstall the filter, O-ring, and sediment cup.
4 Turn the fuel valve lever ON and check for leaks.
Spark Plug Service
To ensure proper engine operation, the spark plug must be properly gapped and free of deposits.
If the engine has been running, the muffler will be very hot. Be careful not to touch the muffler.
1 Remove the spark plug cap.
2 Clean any dirt from around the spark plug base.
3 Use a spark plug wrench to remove the spark plug.
4 Visually inspect the spark plug. Discard it if the insulator is cracked, chipped or fouled.
5 Measure the plug gap with a feeler gauge. Correct as necessary by carefully bending the side
electrode.
The gap should be: 0.028 0.031 in (0.70 0.80 mm)
6 Check that the spark plug washer is in good condition, and
thread the spark plug in by hand to prevent cross-threading.
7 After the spark plug is seated, tighten with a spark plug
wrench to compress the washer.
－If installing a new spark plug, tighten 1/2 turn after the spark plug
seats to compress the washer. If reinstalling a used spark plug,
tighten 1/8 －1/4 turn after the spark plug seats to compress the
washer.
The spark plug must be securely tightened. An improperly tightened spark plug can become very hot
and could damage the engine. Never use spark plugs which have an improper heat range.
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