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Generac Power Systems GN - 320, Owner'S Manual, Page: 15 / 24

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Generac Power Systems GN - 320 Owner'S Manual Download Page 15

— 15 —

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GN

N--332200//336600//441100  E

En

ng

giin

nee

R

RE

EP

PA

AIIR

R  P

PA

AR

RT

TS

S  L

LIIS

ST

T  —

—  L

LO

ON

NG

G  B

BL

LO

OC

CK

K  ((G

GN

N--332200//336600//441100))

ITEM

PART NO.

QTY.

DESCRIPTION

1

71978

1

Connecting Rod With Cap 
and Bolt

2

71980

1

Piston Pin

3A

89291

1

Piston Ring Set 80 MM (320)

3B

71977

1

Piston Ring Set 85 MM (360)

3C

21533

1

Piston Ring Set 90 MM (410)

4A

89217

1

Piston 80 MM (320)

4B

76339

1

Piston (360)

4C

96699

1

Piston (410)

5

71983

2

Piston Pin Retainer

6A

78666A

1

Crankshaft Assembly With 
Gears (Small Taper)

6B

76378A

1

Crankshaft Assembly With 
Gears (Straight Shaft)

7

A7628

1

Governor Arm

8

78658

1

Governor Arm “R” Pin

9

78659

2

Governor Arm Washer

10A

88261D

1 

Crankcase H.S. W/Taper Plugs
(320)

10B

88261C

1

Crankcase H.S. W/Taper Plugs
(360)

10C

88261E

1

Crankcase H.S. W/Taper Plugs
(410)

12

72655

2

Crankshaft Seal

13

A8930

1

Gov. Gear Assembly

14

78645

1

Governor Retainer 
(“C” Ring)

15

A7811

1

Governor Spool

19

A7081

1

Camshaft Assembly

20

76701

1

Crankcase Gasket

21A

21713A

1

Cylinder Head Gasket 
(320-360)

21B

21713B

1

Cylinder Head Gasket (410)

22

78691

1

Oil Pressure Reliefcover

23

A5771

1

Pressure Relief Spring

24

A5776

1

Pressure Relief Ball

25

76361

1

Thrust Washer

26

A8898B

1

Gear Cover

27

86514

2

Valve Spring Retainer

28

91308

2

Valve Spring

ITEM

PART NO.

QTY.

DESCRIPTION

29

86025

1

Gerotor Set

30

84430

1

Balancer

31

21714

1

Cylinder Head With Valve 
Seats & Guides

32

86516

1

Exhaust Valve

33

86517

1

Intake Valve

34

88396B

2

Push Rod

35

83897

2

Tappet

36

77158

1

Oil Pick-Up Assembly

37

71987

1

Rocker Cover Gasket

38

72694

2

Pivot Ball Stud

39

83907

2

Rocker Arm

40

72696

2

Jam Nut (Rocker Arm)

41

78694

1

Push Rod Guide Plate

42

21742

4

M10-1.5 x 105 Head Bolt

43

83938

1

Rocker Cover Breather
Assembly

44

76329

1

Oil Fill Plug

46

86254

1

O-Ring 17.8 I.D. x 2.4 THK.

47

26925

2

3/8" NPT Pipe Plug

48

74908

1

M5-0.8 x 8MM Screw
(Thread Forming)

50

86515

4

Valve Spring Keeper

51

78606

4

M6-1 x 12MM Pan Head
Screw & Lockwasher

52

A1442

8

Hex Head Flange Bolt
M8-1.25 x 42MM

53

78672

1

Valve Stem Seal

54

89673

2

Valve Spring Washer

N/A

21947C

1

Long Block Assm. (320cc 
w/item 6A

N/A

21948C

1

Long Block Assm. (360cc 
w/item 6A

N/A

21949C

1

Long Block Assm. (360cc 
w/item 6B

N/A

A1044A

1

Long Block Assm. (410cc 
w/item 6A

N/A

A6497A

1

Long Block Assm. (410cc 
w/item 6B

Summary of Contents for GN - 320

Page 1: ...N NS S W WH HI IC CH H I IF F N NO OT T F FO OL LL LO OW WE ED D C CO OU UL LD D E EN ND DA AN NG GE ER R T TH HE E P PE ER RS SO ON NA AL L S SA AF FE ET TY Y A AN ND D O OR R P PR RO OP PE ER RT TY...

Page 2: ...FOR SAFE OPERATION Study these RULES FOR SAFE OPERATION carefully before operating or servicing this equipment Become familiar with the OWNER S MANUAL and with the engine The engine can operate safel...

Page 3: ...gas if breathed in sufficient concentrations can cause unconsciousness or even death Operate this equipment only in the open air where adequate ventilation is available Do not insert any object throug...

Page 4: ...bout parts and service always supply the complete model number and serial number of your unit as given on its data plate decal The warranty and replacement parts for this engine are included in the ow...

Page 5: ...l before each use and change the oil regularly Failure to use the correct oil or using dirty oil can cause premature engine wear and failure The recommended oils include the following During summer mo...

Page 6: ...from the crankcase Figure 1 2 Add engine oil until the oil level is to the point of overflowing Figure 1 Oil Fill Cap CHECKING ENGINE OIL 1 Check the engine oil level before starting the engine each t...

Page 7: ...a low oil pressure sensor that shuts down the engine automatically when the oil pressure drops below 8 psi If the engine shuts down by itself and the fuel tank has enough gasoline check the engine oi...

Page 8: ...plug remove the plug and drain the oil completely into a suitable container Figure 5 Figure 5 Oil Filter and Drain Plug 2 When the oil is drained install and tighten the oil drain plug 3 If your engin...

Page 9: ...Apply enough clean engine oil to saturate the pre filter D Wrap the pre filter in a clean dry cloth and squeeze out the excess oil DO NOT TWIST Set the pre filter aside 4 To clean or replace the pape...

Page 10: ...r head Figure 8 Setting Spark Plug Gap CLEANING THE SPARK ARRESTOR SCREEN The engine exhaust muffler has a spark arrestor screen Inspect and clean the screen every 100 hours of operation or once each...

Page 11: ...e e 11 CARBURETOR ADJUSTMENTS The carburetor of your engine is pre set at the factory The carburetor should not be tampered with because this will VOID THE EMISSION CONTROL SYSTEM WARRANTY If you expe...

Page 12: ...CHEDULE Every 8 Hours or 25 Hours or Every 50 Hours or Every 100 Hours or Every MAINTENANCE OPERATION or Daily Season Season Season Check Oil Level X Change Oil See Note 1 Change Oil Filter if so equi...

Page 13: ...l stabilizer or an equivalent will prevent gum deposits from forming in the engine s fuel system 2 While the engine is still warm drain the oil from the crankcase Refill with it with fresh oil See BEF...

Page 14: ...14 Generac GN 320 360 410 Engine E E X X P P L L O O D D E E D D V V I I E E W W L L O O N N G G B B L L O O C C K K G G N N 3 3 2 2 0 0 3 3 6 6 0 0 4 4 1 1 0 0 10C 21A 21B 3C 4C...

Page 15: ...1B 21713B 1 Cylinder Head Gasket 410 22 78691 1 Oil Pressure Reliefcover 23 A5771 1 Pressure Relief Spring 24 A5776 1 Pressure Relief Ball 25 76361 1 Thrust Washer 26 A8898B 1 Gear Cover 27 86514 2 Va...

Page 16: ...6 G Ge en ne er ra ac c G GN N 3 32 20 0 3 36 60 0 4 41 10 0 E En ng gi in ne e E EX XP PL LO OD DE ED D V VI IE EW W A AI IR R C CL LE EA AN NE ER R A AN ND D C CA AR RB BU UR RE ET TO OR R 43A 43B 4...

Page 17: ...Adapter 91028 1 37 M6 Lock Washer 22097 3 38 M6 Hex Nut 49813 2 39 Carburetor Air Box 90970 1 Gasket 40 M6 Ribbed Lock 93873 2 washer 41 Spitback Plate 91204 1 42 Carburetor Manifold 89228 1 Gasket 43...

Page 18: ...T TA AN NK K M MO OU UN NT TI IN NG G H HA AR RD DW WA AR RE E ITEM PART QTY DESCRIPTION 22 40976 2 SHCS M8 1 25 X 20 26 22129 2 Lock Washer M8 94 B2348 1 Tank Cradle 95 52858 2 M8 Lock Nut 96 59012 2...

Page 19: ...DE ED D V VI IE EW W O OI IL L F FI IL LT TE ER R A AN ND D O OP PT TI IO ON NA AL L O OI IL L F FI IL LL L T TU UB BE E ITEM PART QTY DESCRIPTION 2 86999 1 Oil Filter Gasket 3A 72709 1 Oil Blockoff 3...

Page 20: ...Decal 10 93611 1 Black Sleeving 12 84329 1 3 Pin Male HSG 13 92981 1 Wire Assembly 14 22097 2 M6 Lockwasher 15 92079 2 M6 X 30 Taptite 16 84542 1 Ignition Coil 18 87221B 1 L O S Module 20 72347 1 Spa...

Page 21: ...3 B2160 1 Rubber Spacer 21 G Ge en ne er ra ac c G GN N 3 32 20 0 3 36 60 0 4 41 10 0 E En ng gi in ne e E EX XP PL LO OD DE ED D V VI IE EW W S ST TE EP PP PE ER R M MO OT TO OR R F FL LY YW WH HE EE...

Page 22: ...ner you should however be aware that Generac Corporation may deny you warranty coverage if your utility or lawn and garden equipment engine or a part thereof has failed due to abuse neglect improper m...

Page 23: ...related part which is scheduled for replacement as required maintenance in the Owner s Manual shall be warranted for the period of time prior to first scheduled replacement point for that part If the...

Page 24: ...ervice and does not apply to engines or parts which have been subjected to improper or unauthorized installation misuse negligence accident overloading over speeding improper maintenance improper repa...

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