ENGINE/DC CONTROL
PART 4
Section 4.4
Troubleshooting Flowcharts
Page 57
VERIFY UTILITY
SOURCE IS “OFF”
TEST 52 – CHECK
POSITION OF
AUTO-OFF-MANUAL
SWITCH
TEST 53 – TRY A
MANUAL START
ON
OFF
SWITCH IS “OFF”
SWITCH IS
IN “AUTO”
ENGINE DOES
NOT CRANK
ENGINE
CRANKS
SET TO “AUTO” -
RETEST
TURN “OFF” -
RETEST
GO TO PROBLEM 21
REPLACE CONTROLLER
ASSEMBLY
Problem 20 – Engine Will Not Crank When Utility Power Source Fails
RECHARGE /
REPLACE
NOTE: If a starting problem is encountered,
the engine itself should be thoroughly
checked to eliminate it as the cause of starting
difficulty. It is a good practice to check the
engine for freedom of rotation by removing the
spark plugs and turning the crankshaft over
slowly by hand, to be sure it rotates freely.
WARNING: DO NOT ROTATE
ENGINE WITH ELECTRIC STARTER
WITH SPARK PLUGS REMOVED.
ARCING AT THE PLUG ENDS MAY
IGNITE THE LP OR NG VAPOR
EXITING THE SPARK PLUG HOLE.
TEST 56 – CHECK
BATTERY
TEST 55 – CHECK
7.5 AMP FUSE
TEST 59 – TEST
STARTER MOTOR
TEST 58 –
CHECK STARTER
CONTACTOR
BAD
BAD
BAD
BAD
BAD
GOOD
GOOD
GOOD
GOOD
GOOD
REPLACE
REPLACE
Problem 21 – Engine Will Not Crank When AUTO-OFF-MANUAL Switch is Set to “MANUAL”
REPLACE
CONTROLLER
ASSEMBLY
TEST 57 – CHECK
WIRE 56 VOLTAGE
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