Inspecting The Distributor And Its Components - Westerbeke 9.0 BCG Technical Manual

Inspecting the Distributor and its Components
1. Inspect the rotor and cap for cracks, wear, rust, dirt or salt deposits.
2. Check the cap with an electronic tester, as il-
lustrated in the diagram to the right.
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Insulation M
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Prior to testing the distributor cap, apply your
breath inside of the cap to damped the interior
of the cap. Set the range ofthe ohm tester to IN-
SULATION M Ohm. If the cap's resistance is
less that 20M ohms, clean the cap using a neutral
detergent. After drying the cap, remeasure the
insulation resistance. If the insulation resistance
is still less than 20M ohms, replace the cap.
:::_-___ :. __ :.:==:=
J _____ @-____ :
Measuring Points
(DBetween center electrode and segments
No.1 through No.3
@Between each segment of No.1 through
No.3
3. Check the the distributor shaft for wear or damage. Replace all damaged parts.
4. Measure the condenser capacity with a circuit tester. If the reading does not fall within the specified range,
replace the condenser.
Specified range:
(Condenser Capacity)
5. Test each spark plug wire and the coil wire. Con-
nect the leads of a circuit tester to each end of
the spark plug wire. Check the continuity of the
spark plug wire while gently waving the center
portion of the spark plug wire. If the pointer on
the tester deflects while the wires are waved,
then the wires are satisfactory.
Resistance: No.1 cord 6 - 14
kn
No.2 cord 6 - 16
kn
No.3 cord 5 - 12
kn
Center cord 4 - 9
kn
125
0.225 - 0.275 microfarads (uF)
Westerbeke Generators