SPARK PLUG SERVICE Recommended spark plug: BR-4HS (NGK)
W 14FR-U (ND)
To ensure proper engine operation, the spark plug must be properly gapped and free
of deposits.
1. Remove the spark plug cap.
2. Use the wrench supplied in the tool kit to remove the spark plug.
3. Visually inspect the spark plug. Discard it if the insulator is cracked or chipped.
4. Measure the plug gap with a feeler gauge.
The gap should be 0.6-0.7 mm (0.024-0.028 in). Correct as necessary by bending
the side electrode.
5. Attach the plug washer. Thread the plug in by hand to prevent cross-threading.
6. Tighten a new spark plug l/2 turn with the wrench to compress the washer.
If you are reusing a plug, it should only take l/8-1/4 turn after the plug seats.
CAUTION :
l The spark plug must be securely tightened. An iinproperly tightened plug can be-
come very hot and possibly damage the generator.
l Never use a spark plug with an improper heat range.
SPARK PLUG WRENCH
0.6 -
0.7 mm
27