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Problem: STARTER CRANKS BUT ENGINE
WON’T START
Check the electrical system after checking for fuel
in the tank and after priming the fuel system.
Using a test light with the ignition switch in the on
position, check for power at the fuel pump
connector on the engine.
If test light comes on:
Make sure fuel pump is properly
grounded by using the fuel pump for the
test light ground.
If the fuel pump is properly grounded
the problem is in the fuel pump.
If test light doesn’t come on:
Using a test light check for power at
terminal J4-2 on the SIB.
If test light comes on at terminal J4-2
on the SIB:
The problem is in the wiring or
terminals between the SIB and the
fuel solenoid.
If test light doesn’t come on at terminal
J4-2 on the SIB:
The board is faulty and should be replaced.
Problem: DECK MOTORS WON’T RUN WITH
ENGINE RUNNING
1. Temporarily disconnect connector at blade
run hydraulic valve.
2. Start engine, put deck run switch to on
position.
3. Check terminals of wiring connector with
test light.
If light comes on:
Test the resistance of the deck run
hydraulic valve coil (at coil connector).
The resistance should be approximately
4c ohms. Current flow through the coil
therefore should be approximately 3
amps. at 14 volts.
If the coil resistance is correct the
problem is not in the electrical system.
If light doesn’t come on:
1. Check for power at
terminal J2-6 on the SIB.
2. Check for power at
terminal 2 on the Deck
Run Switch.
3. Check for power at
terminal 1 on the Deck
Run Switch.
If the light doesn’t come on for number 1
above:
The board is faulty and should be
replaced.
If the light comes on for number 1 above
but not 2:
The problem is in the wiring or
terminals between the SIB and the
deck run switch.
If the light comes on for numbers 1 and 2
above but not 3:
The deck run switch is faulty and
should be replaced.
If the light comes on for numbers 1,2 and 3
above:
The problem is in the wiring or
terminals between the deck run switch and the
blade run valve.