Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Spark Plug: Service and Repair

1. Disconnect ignition wires from spark plugs.
2. Loosen spark plugs 1/4 turn and use compressed air to remove any dirt or foreign material from spark plug areas of cylinder heads.
3. Remove spark plugs.
4. To install, reverse removal procedure. Check and adjust spark plug gap to 1.2-1.3 mm (0.048-0.052 in). Tighten spark plugs to 13-17 Nm (9-13 lb ft).