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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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