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The information described in Maintenance Manual X-7525 under the heading
MOTOR GENERATOR (SEC.
24C) is applicable to models covered
by
this
supplement with the exception of the following:
To maintain maximum efficiency from the
Onan unit, check the breaker points every 100
hours and change the breaker points every 200
hours of operation. The breaker point box may
be of two types, refer to figure 1 or figure 2 .
To change the breaker points and set the
ignition timing, use the procedure appropriate
to particular unit .
OMAN MOTOR GENERATOR
(6KW AND 4KW)
BREAKER POINT ADJUSTMENT
AND TIMING PROCEDURE
TYPE 1
BREAKER POINTS
1 . Remove the two screws and the cover on
the breaker box .
2 . Remove the two spark
plugs so the
engine can easily be rotated by hand.
Check
condition of spark plugs at this time .
3. Remove mounting screw (A) and pull the
points out of the box just far enough so screw
(B) can be removed and leads disconnected.
SECTION 24C
MOTOR GENERATOR
Contents of this section are listed below:
SUBJECT
PAGE
NO .
Motor Generator Caution . . . . . . . . . . . . . . . . . . . . .
24C-1
Ignition and Battery Charging System . . . . . . . . . . . . . . . .
24C-1
Breaker Point Adjustment . . . . . . . . . . . . . . . . . . . .
24C-1
OTOR GENERATOR CAUTION
CAUTION: Do not interfere with or bypass electrical circuit breaker or attempt in
other ways to defeat its purpose .
Don't fill fuel tank while engine is running and
don't smoke when filling fuel tank. Wipe up any oil and gasoline spills immediately
and make sure oily rags aren't left on the power plant or in its compartment .
Replace any compartment insulation that may become fuel or oil soaked . Do not use
flammable materials directly above or around the power plant compartment. Make
sure the ventilation system provides a constant flow of air to expel any fuel vapor
from motor generator compartment while vehicle is in transit .
Also, be sure any
openings made in the motor generator compartment for conduit, wiring, etc . are
sealed to prevent toxic gases from
entering vehicle
interior. Do not remove oil-fill
cap while engine is running .
IGNITION AND BATTERY CHARGING SYSTEM
4. Remove screw (C) and replace condenser
with a new one. Tighten screw (C) .
5 . Replace points with a new set . Tighten
screw (B) but
do not completely
tighten
mounting screw (A).
6 . Remove push-on terminal from ignition
coil negative terminal .
Connect test lamp,
one lead to battery positive (+) terminal at
starter, the other lead to push-on terminal (-)
Figure I -Breaker Point Adjustment-Type 1
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