26
500Wi OM
9.
Install the spark plug carefully, by hand, to avoid cross-threading.
10.
After a new spark plug has been seated by hand, it should be tightened 1/2 turn with a wrench to compress
its washer. If a used plug is being reinstalled, it should only require 1/8 to 1/4 turn after being seated.
11.
Reinstall the spark plug cap on the spark plug securely.
12.
Reinstall the spark plug maintenance cover.
The spark plug must be securely tightened. An improperly tightened plug can become
very hot and possibly damage the generator.
Never use a spark plug with an improper heat range.
Always use a CMR5H resistor-type spark plug. Using a non-resistor spark plug will
interfere with AC output and the electronics, and may prevent the engine from starting.
5.6 Spark arrestor maintenance
If the generator has been running, the muffler will be very hot. Allow it to cool before
proceeding.
The spark arrestor must be serviced every 100 hours to maintain its efficiency, or a
decrease in horsepower may occur.
Because of the size of the spark arrester opening in the exhaust grill you may decide that
you do not want to take off the grill. This will not cause an issue unless you drop the
arrester or the clamp or screws behind the grill. Taking the grill off or leaving it on is a
matter of your convenience, but the procedure below will include removing the grill.
4.
Remove the two M6 screws and remove the muffler grill.
5.
Remove the two M4 screws holding the spark arrester to the muffler.
6.
Use a stiff wire brush to remove carbon deposits from the spark arrester screen.
7.
Inspect the screen for holes, and replace it if necessary.
8.
Reinstall the spark arrester.
9.
Reinstall the muffler grill.
Muffler Grill
M6 Screws
Spark Arrestor
M4 Screws
