To Next Page

To Previous Page

2726

MAINTENANCE

INSPECTING/CLEANING THE SPARK ARRESTOR

Inspect and clean the spark arrestor every 100 hours of

operation (refer to page 23, Table 4). The spark arrestor

is located outside the muffler, which gets very hot during

operation. Allow the engine to cool completely before ser-

vicing the spark arrestor.

1. Remove the Phillips-head screw that secures the spark

arrestor to the muffler. See Fig. 15.

2. Remove the spark arrestor screen.

3. Carefully clean and remove the carbon deposits from the

spark arrestor screen with a wire brush. Replace the spark

arrestor if it is damaged. Replacement spark arrestors can

be purchased from wenproducts.com by searching the

part number GN400i-1101.1.

Fig. 15

Spark Plug

Boot

Spark Arrestor

Assembly

4. Reinstall the spark arrestor in the muffler and secure it in place with the screws.

SPARK PLUG MAINTENANCE

Inspect and change the spark plug every 100 hours of operation (refer to page 23, Table 4). The spark plug is

important for proper engine operation. Check the spark plug regularly to maintain proper engine operation. A good

spark plug should be intact, free of deposits, and properly gapped.

1. Gently pull on the spark plug boot to remove it (Fig. 15). Be careful not to tear insulation or wire.

2. Use the included spark plug wrench (page 9, slide the handle into the hole on the wrench) to unscrew the

spark plug from the engine. Remove the spark plug from the engine. TIP: There is limited space for the wrench to

turn. Use both rows of holes in the spark plug wrench to gain leverage to loosen the plug.

3. Visually inspect the spark plug. If it is cracked or chipped, or if the electrodes are worn or burned, discard it and

replace with a new spark plug. We recommend replacing it with an F6RTC spark plug. These can be purchased

from wenproducts.com by searching part number 56310i-0104.

4. If re-using the spark plug, use a wire brush to clean any dirt from around the spark plug base, then re-gap the

spark plug.

Instructions continue on the next page.

Wen GN400i User Manual

Questions and Answers: