Problem 1
Engine will not turn over to start.
POSSIBLE CAUSES
Dead battery; Loose connection on battery; Starter, start solenoid (MS1/
MS2) relay, or starter solenoid (SS) is damaged; Engine node is damaged.
CHECKS
Check for voltage at battery terminals while attempting to start engine.
(See Section 7 - Battery Maintenance).
20 volts DC or more 20 volts DC or less
Check engine key switch for voltage from stop to start.
If Good No Voltage
Check battery static volts.
(See Section 7 - Battery Maintenance).
24 Volts DC or more 24 Volts DC or less
Check engine stop switch
for voltage.
Charge or replace battery.
Check starter solenoid SS circuit breaker CB6.
If Good
If Bad
Check electrical connections in starter circuit from
battery to starter.
Connections Good Connections Bad
Replace starter.
Clean connections.
Replace circuit breaker CB6, if damaged.
Check start solenoid (MS1/MS2) relays.
If Good If Bad
Replace start solenoid (MS1/MS2) relays or wiring.
Check starter solenoids (SS) and starter motors.
If Good
If Bad
Repair or replace solenoids (SS) or starter motors.
Disengage clutch and attempt to start engine.
Engine Turns
Engine Does Not Turn
Pump or drive damage.
Disassemble and investigate.
Engine or flywheel is damaged. Disassemble
and investigate. (See engine manual.)
Is engine node damaged?
If Good
If Bad
Replace engine node.
Repair or replace
faulty switch.
Yes
No
Repair or replace engine stop/start switch.
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