Problem 2. engine cranks but will not start – Generac 86640 User Manual
Page 95
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Problem 2. Engine Cranks But Will Not Start
TEST
14-CHECK
FUEL SUPPLY
i
O.K
j
TEST 15-CHECK
ENGINE CONTROL
CIRCUIT BOARD
WIRE #14
OUTPUT
i
O.K
j
TEST 16-CHECK
FUEL VALVE
1 GOODi
OUT OF FUEL
NO WIRE #14 OUTPUT
I
REPLENISH FUEL
SUPPLY OR TURN
ON FUEL AS
REQUIRED
i
REPLACE ENGINE
CONTROL
CIRCUIT BOARD
BAD
i
REPLACE FUEL
VALVE
TEST
17-CHECK
FUEL PUMP
GOOD^B^
TEST 18-TEST
AUTOMATIC CHOKE
(GASOLINE ONLY)
_GOOD^^
TEST 19-CHECK
ENGINE
IGNITION
SYSTEM
BAD
i
BAD
i
b
I
d
GOODk
REPLACE BAD PUMP
REPLACE BAD PART(S)
I
REPAIR OR REPLACE
PART(S) AS
NECESSARY
TEST 20-CHECK
ENGINE FUEL
SYSTEM
iGOOC
TEST 21-CHECK
ENGINE
MECHANICAL
SYSTEMS
Page 9.5-2
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