Guardian 4389 Repair Manual page 92

SECTION 4.3
TROUBLESHOOTING FLOW CHARTS
Problem 8 - Engine Will Not Crank When Utility Power Source Fails
VERIFY UTILITY
OFF
SOURCE IS "OFF"
ON
TURN "OFF" -
RETEST
TEST 44 - CHECK
WIRE 15/15A/17/239
VOLTAGE
SEE "RESULTS OF
TEST 44"
Problem 9 - Engine Will Not Crank When AUTO-OFF-MANUAL Switch is Set to "MANUAL"
TEST 45 - CHECK15
GOOD
AMP FUSE
BAD
REPLACE
REPAIR /
BAD
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.
Page 90
TEST 41 - CHECK
POSITION OF
AUTO-OFF-MANUAL
SWITCH
SWITCH IS "OFF"
SET TO "AUTO" -
RETEST
VERIFY REMOTE "NOT AUTO"
DIPSWITCH IS SET TO "OFF"
SET TO "OFF"
(SEE FIGURE 3, PAGE 4.1-2)
TEST 46 - CHECK
BATTERY
BAD
RECHARGE / REPLACE
TEST 60 - CHECK OIL
PRESSURE SWITCH
AND WIRE 86
SEE "RESULTS OF
TEST 44"
GOOD
PART 4
SWITCH IS
TEST 42 - TRY A
IN "AUTO"
MANUAL START
ENGINE DOES
NOT CRANK
GO TO PROBLEM 9
SET TO "ON"
SET TO "OFF" -
RETEST
TEST 47 - CHECK
GOOD
WIRE 56 VOLTAGE
BAD
TEST 43 - TEST
AUTO-OFF-MANUAL
SWITCH
GOOD
GOOD
TEST 44 - CHECK
WIRE 15/15A/17/239
VOLTAGE
TEST 50 - TEST
STARTER MOTOR
BAD
DC CONTROL
ENGINE
CRANKS
TEST 43 - TEST
AUTO-OFF-MANUAL
GOOD
SWITCH
BAD
REPLACE
GOOD
TEST 48 - CHECK
STARTER
CONTACTOR RELAY
(V-TWIN ONLY)
BAD
BAD
GOOD
REPLACE
TEST 49 - CHECK
STARTER
CONTACTOR
GOOD
BAD
REPLACE