Gravely Promaster 100 Service Manual page 58

Promaster 100 Kohler 16-18 HP
Installation checkout: Make sure that all switches are in
their proper position: PTO switch off, Neutral switches
activated. (T-levers centered).
Step 1:
Check out the battery. Use a hydrometer on all the
battery cells to see if one or more is bad. Also use a
voltmeter to check for proper voltage. Replace the
battery if necessary and/or charge to proper level.
Step 2:
Use a voltmeter to make sure you have power to
terminal B in the off position on the back of the key
switch. If you don't have power to terminal B, check the
30-amp fuse.
Step 3:
With the key switch in the RUN position see that power
has been transferred to terminal A, R, and B, on the
backside of the key switch. Terminal A supplies power
to the hourmeter and oil PSI switch and light. Terminal
R brings in the charge power from the engine to the
battery. Terminal B supplies power to the relay (pin 86)
and to the seat switch on to the time delay for the
module holding circuit.
Step 4:
With the key in the START position, power is
transferred to terminal S, to the first small stud on the
solenoid, out the other small stud, and through the PTO
and neutral switches to ground for starting, and at the
same time, supply power to activate the time delay.
NOTE: The engine kill circuit is connected to terminal
87A of the relay. The engine will shut down when
power at the relay is stopped or interrupted.
You must be in the operator seat for start up.
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