Engine Adjustments; Spark Plugs; High Tension Cords; Drive Belt Adjusment - Westerbeke 8.0 KW-60Hz SBEG Operator's Manual

ENGINE ADJUSTMENTS
SPARK PLUGS
The spark plugs should be cleaned and regapped after the
first 50 hour break-in period, then inspected every 250 hours
thereafter and replaced as needed.
A
WARNING:
00 not remove the spark plugs while
the engine is hot. Allow the engine
to
cool before
removing them.
SPARK PLUG GAP: 0.031
±
0.002 in. (0.8 - 0.05 mm).
SPARK PLUG TORQUE: 25 Nm. (18.45 «-Ib)
NOTE:
Loctite Anti-Seize applied to the threaded portion of
the spark plugs will retard corrosion, making future removal
of the spark plugs easier.
INSPECT FOR DAMAGE ----..-
INSPECTING
THE SPARK
PLUGS
CHECK FOR CARBON
Vl'BUILD UP AND BURNING
. . : t
GAP
f
HIGH TENSION CORDS (IGNITION WIRES)
Check the ignition wires every 500 operating hours as engine
compartment heat can deteriorate the wires.
Check the resistance of each wire. Do not pull on the wire
because the wire connection inside the cap may become
separated or the insulator may be damaged. When removing
the wires from the spark plugs, grasp and twist the molded
cap, then pull the cap off the spark plug.
The resistance valne is 410 ohm per inch of wire.
CHECKING
RESISTANCE
DRIVE BELT ADJUSTMENT
The drive belts must be properly tensioned. Excessive drive
belt tension can cause rapid wear of the belts and reduce the
service life of the fresh water pump's bearing A slack belt or
the presence of oil on the belt can cause belt slipping,
resulting in high operating temperatures.
This generator has two drive belts, one drives the governor
and alternator and the other drives the raw water pump. The
tension adjustment procedure for both belts is as follows:
1. Remove the belt guard.
2. To adjust the governor/alternator drive, loosen the two
governor mounting bolts.
To adjust the raw water pump/fresh water pump drive
belt, loosen the two raw water pump mounting bolts.
3. With the belt(s) loose, inspect for wear, cracks and frayed
edges and replace if necessary.
4. To loosen or tighten the alternator drive belt, slide the
alternator in or out as required, then retighten its mounting
bolts.
To loosen or tighten the raw water pump/fresh water
pump drive belt, slide the raw water pump in or out as
required, then retighten its mounting bolts.
5. The drive belts are properly adjusted if it can be deflected
no less than 3/8 inch (lOmm) and no more than 112 inch
(12mm) as the belt is depressed with the thumb at the
midpoint between the two pulleys on the longest span of
the belt.
A
WARNING:
Never attempt
to
check or adjust
a
drive belt's tension while the engine is in operation.
6. Operate the engine for about 5 minutes, then shut down
the engine and recheck the belts tension.
7. Replace the belt guard.
Engines & Generators
19