Westerbeke 50 - Page 117

V.32
2. Sticking
3. Inaccurate
-2-
1.
Check for proper A.C. voltage between "tach inp."
terminal
and (-) terminal.
2.
Check for good ground connection between meter
(-) Terminal and alternator.
3. Check alternator is well grounded to engine
block
at alternator pivot bolt.
1. With hand-held tach on front crankshaft pulley
retaining nut
or strobe type tach read front
crank
shaft pulley R.P.M. Set engine R.P.M.
with hand or strobe tach at 1500-1800 R.P.M.
2. Adjust tachometer with small Phillips type
screwdriver through
calibration access hole
in rear of tachometer covered with translucent
plug.
Zero tach and bring to R.P.M. set by
strobe or hand tach. (Verify R.P.M. at idle
and at high speed 2500-3000 R.P.M.) (Adjust
tach
as needed.)
( + ) Terminal
(Battery Voltage-DC)
Tachometer Input
(AC Voltage)