Kohler 125EOZ/100EFOZ, Service Manual, Page: 53 / 148

TP-5737 5/01 39 Section 5 Decision-Maker
t
3+ Troubleshooting
0 + ---
1
2
3
6
5
4
3-100
R12758-3
TP-5353-6
1. Speed sensor
2. Wire 16: white/clear
3. Wire 24: red 4. Wire 2: black
5. Air gap: 0.36--0.71 mm (0.014--0.028 in.)
6. Actuator cup
1
Figure 5-26 Speed Sensor Air Gap
5.4 FASTCHECK Features and
Operation
The FASTCHECK
â
serves as an engine simulator for
testing and troubleshooting the microprocessor
controller.
5.4.1 Features
The following paragraphs detail the FASTCHECK
â
features. See Figure 5-27 for an illustration. The
following engine switch positions simulate engine
conditions:
D
OFF—locked engine (starter energized but not
turning)
D
CRANK—engine cranking, but not started
D
RUN—engine running
Indicator Lamps:
D
IGN—(ignition) lamp:
D
Shows battery voltage supplied to fuel solenoid
D
Lights during cranking and running
D
CRK—(crank) lamp:
D
Shows battery voltage switched to starter (engine
not necessarily turning)
D
Lights only during on-crank cycles
D
REG—(regulator) lamp:
D
Shows battery voltage supplied to the generator
set’s AC voltage regulator
D
Lights only during cranking and running
D
BATT—(battery) lamp:
D
Lights when the test battery(ies) or DC power
supply is live and properly connected
Note: LOP, HWT, and OVERSPEED simulate
malfunctions causing the engine to shut down.
LOP and HWT circuits start timing after the
engine has run for 30 seconds. The engine
shutdown should occur 5 seconds after pushing
the fault switch.
1
2
3
4
B-291930
1. Toggle switches
2. Indicator lamps 3. Overspeed button
4. Engine switch
Figure 5-27 FASTCHECK
â
Simulator