Westerbeke 20B TWO Tehnical Manual page 74

Starter Adjustment and Repair
If any abnormality is assumed by the following tests,
adjust the starter or disassemble and repair it.
1. Pinion gap inspection.
a. Interpose a battery (12
V)
between the starter
terminallS" and the starter body, and the pinion
will protrude and stop.
CAUTION
Never apply battery voltage for over 10 seconds
continuously.
Push back
Lightly
O.5-2.0mm
Inspecting Pinion Gap
b. Lightly push the pinion back and measure the return stroke (called pinion gap).
c. If the pinion gap is not within the standard range, (0.5 to 2.0 mm), adjust it by increasing or decreasing
the number of packings on the magnetic switch. The gap is decreased as the number of packings
increases.
2. No-load test.
a. Connect the ammeter, voltmeter, and battery to
the starter as illustrated.
b. When the switch is closed, the pinion must
protrude and the starter must run smoothly (at
3000 rpm or more). Ifthe current or starter speed
is out of specification, disassemble the starter
and repair it.
CAUTION
No·load Test
Use thick wires as much as possible and tighten every terminal securely. This is a solenoid
shift type starter which makes a rotating sound larger than that of a direct-drive type starter.
When detecting starter rotation at the pinion tip, take care of protrusion of the pinion.
Westerbeke Engines
72