Onan MJA Series Service Manual page 129

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ing element on the relay, a solder connection holding the spring loaded
contacts is broken, and the contacts separate to open the circuit. The
open circuit breaks the flow of current to the ignition system, stopping
the engine. The relay may be checked for proper operation by connecting
12 volts across the terminals connecting the two ends of the heaUngele ­
ment.
CAUTION: The heating element will red hot when it is exposed to
12 volts. EXercise caution when performing this check.
If
the reset button does not pop out, remove and replace the re ­
lay.
6.
3~
5 Resistor (1 ohm - 10 watt). - This resistor is placed in series
with the emergency relay to delay automatic opening of the relay 15
~',;'
seconds after the closing of the low oil pressure switch. This aids in
preventing false stops due to an oil filter change or slow oil circulation
in the system.
7. ASSEMBLY TORQUES
The assembly torques given here will
assure proper tightness with out dan ­
ger of stripping threads.
If
a torque
; RECESS
wrench isn't available, estimate the
1­
YUNDER HEAD
degree of tightness necessary for
the stud, nut, or screw. Be careful
not to strip threads. Vse reasonable
Ie
force only and a wrench of normal
length.
A749
Specially designed Place Bolts (Fig FIG 7.A _ PLACE BOLT
7.A) don't require a lockwasher or
gasket. Don't attempt to use a lock-
washer with these bolts,
it
will defeat their purpose. Check aU studs,
nuts and screws often and tighten as needed to keep them from working
loose.