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If you don’t understand any portion of this manual, contact
Generac for a demonstration of actual starting, operating and
servicing procedures.

Throughout this publication and on tags and decals affixed to
the generator, DANGER, WARNING and CAUTION blocks are
used to alert you to special instruction about a particular
operation that may be hazardous if performed incorrectly or
carelessly. Observe them carefully.

These safety warnings cannot eliminate the hazards that they
indicate. Strict compliance with the special instructions while
performing the service plus “common sense” are major
measures to prevent accidents.

The following definitions apply to DANGER, WARNING,
CAUTION and NOTE blocks found throughout the manual.

These safety symbols indicate the following:

DANGER: After this heading you can read handling,
installing, operating or servicing instructions that, if not
strictly complied with, will result in personal injury.

WARNING: After this heading you can read handling,

installing, operating or servicing instructions that, if not
strictly complied with, may result in personal injury.

CAUTION: After this heading you can read instructions for
handling, installing, operating or servicing the generator
that, if not strictly complied with, may result in damage to
equipment and/or property.

NOTE: After this heading you can read explanatory statements that
require special emphasis.

These symbols indicate the following:

Points out important safety information and, if not followed, could
endanger personal safety and/or property of yourself and others.

Potential explosion hazard.

Potential fire hazard.

Potential electrical shock hazard.

RULES 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 safely, efficiently and reliably only if it is properly
operated and maintained. Many accidents are caused by failing
to follow simple and fundamental rules or precautions.

Generac cannot possibly anticipate every possible circumstance
that might involve a hazard. The warnings in this manual and on
tags and decals affixed to the equipment, are therefore, not all-
inclusive. If you use a procedure, work method or operating
technique Generac does not specifically recommend, you must
satisfy yourself that it is safe for you and others. You must also
make sure the procedure, work method or operating technique
that you choose does not render the engine to be unsafe.

DANGER: Do not tamper with the engine governed speed.
High operating speeds are dangerous and increase the
risk of personal injury or damage to the equipment.
Operating at low speeds with heavy load may shorten the
engine’s life.

BEFORE OPERATING

• Gasoline is highly FLAMMABLE and its vapors are 

EXPLOSIVE. Do not permit smoking, open flames, sparks or
heat in the area while handling gasoline. Avoid spilling
gasoline on a hot engine. Comply with all of the laws 
regulating storage and handling of gasoline.

• Store gasoline and other fuels only in containers designed

and approved for the storage of such materials.

• Pressure can build up in the fuel tank. Loosen the fuel tank

slowly to relieve any pressure in the tank.

• Add gasoline and other fuels in a clean, well-ventilated area.

Wipe up any spilled gasoline immediately. If gasoline has
been spilled, let it dry completely before starting the engine.

The engine exhaust from this product

contains chemicals known to the State

of California to cause cancer, birth

defects, or other reproductive harm.

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Summary of Contents for 190/220

Page 1: ...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 Y O...

Page 2: ...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 safely eff...

Page 3: ...f 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 through the...

Page 4: ...t 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 owner...

Page 5: ...fore 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 months...

Page 6: ...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 time...

Page 7: ...pment STOPPING THE ENGINE 1 Remove the load on the engine and let it run for 30 seconds 2 Turn off the engine by moving the RUN STOP SWITCH to the STOP position 3 Close the fuel shut off valve if so e...

Page 8: ...remove the plug and drain the oil completely into a suitable container Figure 6 Figure 6 Oil Filter and Drain Plug 2 When the oil is drained install and tighten the oil drain plug 3 If your engine is...

Page 9: ...y 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 paper air...

Page 10: ...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 ye...

Page 11: ...1 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 experienc...

Page 12: ...DULE 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 equippe...

Page 13: ...l additive such as STA BIL fuel 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...

Page 14: ...14 Generac GN 190 220 Engine E EX XP PL LO OD DE ED D V VI IE EW W S SH HO OR RT T B BL LO OC CK K...

Page 15: ...5 2 14 Governor Gear Assembly A8929 1 15 Governor Gear C Ring 78645 1 16 Governor Spool A7811 1 17 1 8 NPT Pipe Plug 72683 1 18 Camshaft Assembly 98752 1 19 Crankcase Gasket 89096 1 20 Valve Stem Seal...

Page 16: ...51 1 33 M6 x 55mm Capscrew 57058 1 34 M6 x 25mm Capscrew 80318 1 35 M6 x 30mm Screw 80316 2 36A Intake Manifold 20136 1 37 M6 Lock Washer 22097 2 38 M6 Hex Nut 49813 2 39A Carburetor Air Box 21202 1 G...

Page 17: ...Head 90051 1 Gasket 35 M6 x 30mm Screw 80316 2 36B Intake Manifold 90948 1 39B Carburetor Air Box 91846 1 Gasket 41 Canal Cover 80303 1 42 Carburetor Manifold 78631 1 Gasket 43B Carburetor 190cc 98469...

Page 18: ...E En ng gi in ne e E EX XP PL LO OD DE ED D V VI IE EW W G GA AS S T TA AN NK K ITEM PART QTY DESCRIPTION 55 83512 2 M6 X 15 Taptite 57 95213 1 Tank Bracket 58 77395 2 M6 Flange Nut 59 95214 1 Tank C...

Page 19: ...ON 1 94820 1 Expansion Plug 2 91848 1 Oil Filter Gasket 3A 88758 1 Oil Blockoff 3B 84982 1 Oil Filter Adapter 4 92978 2 M6 X 18 Taptite 5 99236 1 Oil Press Switch 6 70185 1 Oil Filter ITEM PART QTY DE...

Page 20: ...Pin Male HSG 13 00185271 1 White Wire Assembly 14 22097 2 M6 Lockwasher 15 82981 2 M6 X 30 Taptite 16 81675 1 Ignition Coil 17 84274 1 Tinnerman Clamp 18 87221A 1 L O S Module 19 45756 1 M6 x 10mm Scr...

Page 21: ...M8 1 25 X 20 98 90192 1 Carb Wear Washer 99 92059 1 Stepper Motor 21 G Ge en ne er ra ac c G GN N 1 19 90 0 2 22 20 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...

Page 22: ...ou 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 mainte...

Page 23: ...ed 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 part...

Page 24: ...e 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 repair or...

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