Ignition System; Spark Plugs - Volvo Penta 3.0GS/SX Owner's Manual

Ignition system

54

Spark plugs

Always clean the area around the spark plugs before
removing them. Remove spark plug and clean.
Check the electrode gap with a feeler gauge, adjust
the gap if necessary. Replace the spark plug if the
edges of the electrodes are rounded or if the ceramic
spark plug body is damaged. See chapter Technical
Data for spark plug type and electrode gap.
WARNING! The wrong type of spark plug can
cause operating problems and engine damage.
Do not run the engine if the ceramic spark plug
body is damaged. Damaged spark plugs can
cause sparks and ignite fuel vapor in the engine
compartment.
Ignition cables and distributor cap
Clean ignition cables and distributor cap. Check that
the cables are in good condition and that the distribu-
tor cap is not cracked. Replace if damaged. Other
distributor components are maintenance free.
WARNING! To minimize the risk of fire and ex-
plosion Volvo Penta ignition components meet
national and marine safety standards. The use
of components that do not meet safety stan-
dards (automobile components for example)
can cause a fire or explosion on board.
If ignition cables are removed, ensure that they are
reinstalled in the correct order. The figures (on next
page) show the typical layouts for the ignition cables.
The arrow points to the front of the engine.