Volvo Penta 3.0GL-B, Operator'S Manual

Page: 69 / 108

67
7741591 / 2003-12
Spark plugs
The following tables provide spark plug part numbers, spark
plug gap, and installation torque:
Engine Model Gap Torque
3.0 GS 0.045 in. (1.14 mm) 20 ft. lb. (27 N•m)
4.3 GL/GXi 0.060 in. (1.52 mm) 20 ft. lb. (27 N•m)
5.0 GL 0.060 in. (1.52 mm) 20 ft. lb. (27 N•m)
5.0 GXi 0.060 in. (1.52 mm) 20 ft. lb. (27 N•m)
5.7 GL 0.060 in. (1.52 mm) 20 ft. lb. (27 N•m)
5.7 Gi 0.060 in. (1.52 mm) 20 ft. lb. (27 N•m)
5.7 GXi 0.060 in. (1.52 mm) 20 ft. lb. (27 N•m)
8.1 Gi 0.060 in. (1.52 mm) 22 ft. lb. (30 N•m)
8.1 GXi 0.060 in. (1.52 mm) 22 ft. lb. (30 N•m)
DPX375/420 0.060 in. (1.52 mm) 22 ft. lb. (30 N•m)
Engine Model P/N Firing order
3.0 GS 3854399 1–3–4–2
4.3 GL/GXi 3861632 1–6–5–4–3–2
5.0 GL 3861632 1–8–4–3–6–5–7–2
5.0 GXi 3861632 1–8–4–3–6–5–7–2
5.7 GL 3861632 1–8–4–3–6–5–7–2
5.7 Gi 3861632 1–8–4–3–6–5–7–2
5.7 GXi 3861632 1–8–4–3–6–5–7–2
8.1 Gi 3861325 1–8–7–2–6–5–4–3
8.1 GXi 3861325 1–8–7–2–6–5–4–3
DPX375/420 3861325 1–8–7–2–6–5–4–3
Before installing new spark plugs, always check for proper type
and gap (see the table). Incorrect spark plugs can cause oper-
ational problems and possible internal engine damage.
Before installing a spark plug, the spark plug seat in the cylin-
der head should be wiped clean. Tighten plugs to the proper
torque value (see the table above).
Make sure the spark plug
terminals are fully seated on the spark plugs.
When spark plug leads are removed, be sure they are replaced
in the correct firing order (see the table ).
DANGER!
· Avoid abusive handling that could crack the spark
plug’s ceramic body. Damaged spark plugs can emit
external sparks that could ignite any fuel vapors in
the engine compartment.
· Do not operate engine if spark plug boots or high-
tension leads are torn or cracked. This condition could
allow external sparks which could ignite any fuel va-
pors in the engine compartment, and result in fire or
explosion.
Distributor cap and rotor
Remove, inspect and clean the distributor cap and rotor. Re-
place these components if worn or damaged with genuine Vol-
vo Penta parts. No other distributor parts require service or re-
placement.
Be sure spark plug leads are replaced in the correct firing order
(see the table below).
Circuit breakers and fuses
The engine and boat’s electrical system is protected
against current overload by a circuit breaker and fuses.
•
If the circuit breaker trips, push its button to reset it.
•
Replace any blown fuses.
CAUTION!
Circuit breakers or fuses that repeatedly fail indicate
a problem that requires immediate attention. See your
Volvo Penta dealer.
NOTE! If electrical connections are reversed, or con-
nections removed when the key switch is on
or the engine is running, the electrical sys-
tem may be damaged immediately.
Maintenance
7741591 - Downloaded from www.volvopenta.com 12/03/2014 09:32:39