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Page 34

PART 3

ENGINE TROUBLESHOOTING

SECTION 3.1

389/206/163cc TROUBLESHOOTING FLOW CHARTS

NOTHING

FOUND

FIX BAD COMPONENT

BAD

VISUALLY INSPECT FOR OBSTRUCTIONS

THAT WOULD CAUSE BINDING OF THE

RECOIL ONCE INSTALLED

AN INTERNAL ENGINE FAILURE HAS OCCURED.

VISUALLY INSPECT EXTERNAL

COMPONENTS FOR A FAILURE

THAT WOULD CAUSE THE

ENGINE TO BE SIEZED

REPLACE

BAD

GOOD GOOD

Problem 10 – Recoil Cord Will Not Pull

TEST 49 – TEST

RECOIL

FUNCTION

TEST 50 –

TEST ENGINE

FUNCTION

REPAIR

OR REPLACE

REPAIR

OR REPLACE

BAD

GOOD GOOD

GOOD

TEST 26 –

CHECK

SPARK

CHECK FUEL

SUPPLY

CHECK CHOKE

POSITION AND

OPERATION

TEST 27 –

CHECK

SPARK PLUG

TEST 29 –

CHECK

CARBURETION

TEST 33 –

CHECK VALVE

ADJUSTMENT

CHECK FLYWHEEL KEY

TEST 36 – CHECK

ENGINE / CYLINDER

LEAK DOWN TEST /

COMPRESSION TEST

REPLACE SPARK PLUG

PUSH IN AFTER

STARTING

REPLENISH

FUEL

SUPPLY

REPLACE

MAGNETO

REPAIR OR REPLACE AS NECESSARY

REFER TO ENGINE SERVICE MANUAL

GOOD

ENGINE MISS

IS APPARENT

LOW FUEL

BAD

Problem 11 – Engine Starts Hard and Runs Rough

ADJUST VALVES

AND RETEST

BAD

TEST 40 – CHECK

AND ADJUST

GOVERNOR

TEST 38 – CHECK

FLYWHEEL

There are 4 different types of engines on the GP Series

generators: 410cc, 389cc, 206cc, 163cc. Section 3 is

divided into difference subsections that provide engine

troubleshooting for each type of engine. It is imperative

to identify what type of engine is used in order to effec-

tively troubleshoot the problem.

The Specifications section at the front of this manual

provides details about engine displacement for the vari-

ous GP Series generators.

389cc, 206cc and 163cc Engines, use Section 3.1

410cc Engine, use Section 3.2

Brand	Generac Power Systems
Model	GP8000
Category	Portable Generator
Language	English

Generac Power Systems GP8000 User Manual

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