Repair manual

Engine Troubleshooting and Replacement CRT Repair
wc_tx000585gb.fm 134
8.5 Vanguard Engine Cranks but does not Start—Flowchart 2A
Is wiring
OK?
Ye s
Check wiring to spark plug or ignition coils.
No
Repair
wiring.
Is
fuel pump
operating?
Ye s
No
Repair wiring
and/or replace
throttle switch.
Is 12V
measured?
No
Ye s
Check function
of key switch.
Are
the wiring
and switch
OK?
No
Ye s
Check for 12V* on pink wire at
terminal 30 of operator present relay.
See Checking Operator Present Relay.
Is 15A
fuse OK?
No
Ye s
Replace fuse.
Check 15A fuse.
See Checking 15A Fuse.
Check fuel pump operation.
See Checking Fuel Pump.
Is 12V
measured?
Ye s
No
Replace operator
present relay.
wc_gr003417
Check for 12V* on R/B wire at
terminal 87 of operator present relay.
See Checking Operator Present Relay.
Check the wiring to and function
of throttle switch.
See Checking Throttle Switch.
See Flowchart 2B
See engine
repair manual.
* Battery voltage
approximately 12V