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Manual No. A8926
®
GENERAC ENGINES
Overhead Valve
Industrial
Owner’s Manual
Model No. 190/220 (6.5/7.8 Horsepower)
T TH HIIS S S SY YM MB BO OL L P PO OIIN NT TS S O OU UT T IIM MP PO OR RT TA AN NT T S SA AF FE ET TY Y IIN NS ST TR RU UC CT TIIO ON NS S,, W WH HIIC CH H,, IIF 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 OF F Y YO OU UR RS SE EL LF
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G Ge en ne er ra ac c G GN N- -1 19 90 0//2 22 20 0 E En ng giin ne e If you don’t understand any portion of this manual, contact RULES FOR SAFE OPERATION Generac for a demonstration of actual starting, operating and servicing procedures. Study these RULES FOR SAFE OPERATION carefully before operating or servicing this equipment. Become familiar with the Throughout this publication and on tags and decals affixed to OWNER’S MANUAL and with the engine. The engine can the generator, DANGER, WARN
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G Ge en ne er ra ac c G GN N- -1 19 90 0//2 22 20 0 E En ng giin ne e • Do not overfill the fuel tank. Always allow room for fuel • Do not insert any object through the cooling slots of the expansion. If the tank is overfilled, the fuel can overflow onto engine. You could damage the equipment or injure yourself. a hot engine and cause a FIRE or an EXPLOSION. • Do not operate the engine faster than the speed necessary to • Allow at least two (2) feet of clearance on all sides of the operate the
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G Ge en ne er ra ac c G GN N- -1 19 90 0//2 22 20 0 E En ng giin ne e This engine meets the 1998 and later California emissions TABLE OF CONTENTS regulations. To ensure that your engine continues to meet these regulations, refer to the following information and RULES FOR SAFE OPERATION ........................................2-3 instructions in this owner’s manual. GENERAL INFORMATION..................................................4-5 Service Information ....................................
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G Ge en ne er ra ac c G GN N- - 1 19 90 0//2 22 20 0 E En ng giin ne e The recommended oils include the following: OIL AND FUEL INFORMATION • During summer months: SAE 10W-30, NOTE: BE SURE TO READ THESE INSTRUCTIONS • During winter months: SAE 5W-20 or 5W-30. DO NOT USE CAREFULLY BEFORE ATTEMPTING TO START OR SAE 10W-40. OPERATE THIS EQUIPMENT. Using old or improper oil or The crankcase oil capacity is about 770 ml (29 oz.) with the oil fuel can cause engine damage. filter. Without the f
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G Ge en ne er ra ac c G GN N- -1 19 90 0//2 22 20 0 E En ng giin ne e OPERATION AND MAINTENANCE STARTING THE ENGINE It is the owner’s/operator's responsibility to perform all safety 1. Open the fuel shut-off valve, if so equipped. checks; to make sure that all maintenance for safe operation is 2. If your unit is equipped with the IDLE/CONTROL feature, performed promptly; and to have the engine checked by an locate the IDLE/CONTROL ON/OFF SWITCH on the control authorized dealer periodically. No
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I H V UN R O OH HV VII STOP LO W O IL INDICATOR G Ge en ne er ra ac c G GN N- -1 19 90 0//2 20 00 0 E En ng giin ne e A If the engine FAILS TO START, go to Step 3. 2. Grasp the recoil handle (see Figure 4) and pull it slowly until you feel slight resistance, then PULL QUICKLY. Repeat B. If the engine STARTS, go to Step 4. pulling the recoil handle three (3) times, if necessary. Figure 4 — Recoil Handle 3. If the engine FAILS TO START, repeat Steps 1 and 2. 4. Allow the engine to warm up for tw
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G Ge en ne er ra ac c G GN N- -1 19 90 0//2 22 20 0 E En ng giin ne e 2. When the oil is drained, install and tighten the oil drain GENERAL MAINTENANCE plug. RECOMMENDATIONS 3. If your engine is equipped with an oil filter, use the following instructions: The owner/operator is responsible for making sure that all periodic maintenance tasks are completed on a timely basis; that all A. Place a suitable container beneath the oil filter and discrepancies are corrected; and that the equipment is
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G Ge en ne er ra ac c G GN N- -1 19 90 0//2 22 20 0 E En ng giin ne e CAUTION: Never run this equipment without the complete 3. To clean or replace the foam pre-filter: air cleaner system installed on the engine. This could result A. Wash the pre-filter in soapy water. in premature wear to the engine. B. Squeeze the pre-filter dry with a clean cloth. DO NOT TWIST. Use the following instructions to clean or replace the air cleaner components. NOTE: If the pre-filter is still dirty after washi
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Generac GN-190/220 Engine 3. Set the spark plug gap (Figure 8) to 0.76mm (0.030 in.). Figure 9 — Removing Heat Shield Install a correctly gapped spark plug into the cylinder head. Figure 8 — Setting Spark Plug Gap SET PLUG GAP AT 0.76 mm (0.030 inch) Spark Arrestor Screen 83083 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 year, whichever comes first. Heat Shield NOTE: If you use
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G Ge en ne er ra ac c G GN N- -1 19 90 0//2 22 20 0 E En ng giin ne e 3. Loosen the rocker arm jam nut. Using an allen wrench to turn CARBURETOR ADJUSTMENTS the pivot ball stud, check the clearance between the rocker arm and the valve stem with a flat feeler gauge (Figure 11). The carburetor of your engine is pre-set at the factory. The carburetor should not be tampered with because this will VOID Figure 11 — Adjusting Valve to Rocker Arm Clearance THE EMISSION CONTROL SYSTEM WARRANTY. If yo
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G Ge en ne er ra ac c G GN N- -1 19 90 0//2 22 20 0 E En ng giin ne e RETORQUING THE HEAD BOLTS Figure 12 — Tightening Sequence After the first 50 hours of operation, retorque the head bolts. D NOTE: Only perform this adjustment after the first 50 hours of B operation. The head bolts will need no further adjustment. 1. Remove the four (4) screws from the rocker cover (see Figure 10). 2. Remove the rocker cover and rocker cover gasket. E 3. Torque the bolts to 4.0 kg-m. (22 ft-lb). 4. Torque
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G Ge en ne er ra ac c G GN N- -1 19 90 0//2 22 20 0 E En ng giin ne e OTHER STORAGE TIPS STORAGE INSTRUCTIONS 1. Do not store gasoline from one season to another. This engine should be started at least once a week and run for at 2. Replace the gasoline can if it starts to rust. Rust and/or dirt least 30 minutes. If this cannot be done and the equipment must be stored for more than 30 days, use the following guidelines to in a gasoline can cause problems when you use that fuel with this equipme
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Generac GN-190/220 Engine E EX XP PL LO OD DE ED D V VIIE EW W — — S SH HO OR RT T B BL LO OC CK K — 14 —
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G Ge en ne er ra ac c G GN N- -1 19 90 0//2 22 20 0 E En ng giin ne e S SH HO OR RT T B BL LO OC CK K ITEM DESCRIPTION PART NO. QTY. ITEM DESCRIPTION PART NO. QTY. N/A Long Block Assembly 21942E 1 28 M8-1.25 x 35mm Screw 89230 6 (190cc used with Item 8A) 29 Spring Washer 99922 1 Long Block Assembly 21943E 1 30 Valve Spring Retainer A1720 2 (190cc used with Item 8B) 31 Valve Spring 88401 2 Long Block Assembly 21944E 1 32 Valve Spring Wear Washer 84186 2 (220cc used with Item 8A) 33 Geroter Set
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G Ge en ne er ra ac c G GN N- -1 19 90 0//2 22 20 0 E En ng giin ne e E EX XP PL LO OD DE ED D V VIIE EW W — — A AIIR R C CL LE EA AN NE ER R A AN ND D C CA AR RB BU UR RE ET TO OR R ITEMDESCRIPTION PART NO. QTY. 31 Breather Hose 90947 1 32 Manifold Head Gasket 90051 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 Gasket 40 #10-32 x 3/4” Scre
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G Ge en ne er ra ac c G GN N- -1 19 90 0//2 22 20 0 E En ng giin ne e A AIIR R C CL LE EA AN NE ER R A AN ND D C CA AR RB BU UR RE ET TO OR R ITEMDESCRIPTION PART NO. QTY. 31 Breather Hose 90947 1 32 Manifold 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 1 43C Carburetor (220cc) 97747 1 44B Air Cleaner Base 78607 1 45 M6 x 12mm Capscre
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G Ge en ne er ra ac c G GN N- -1 19 90 0//2 22 20 0 E En ng giin ne e E EX XP PL LO OD DE ED D V VIIE 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 Cradle 60 30340 12” 1/4” ID Hose 61 48031C 1 Hose Clamp — 18 —
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G Ge en ne er ra ac c G GN N- -1 19 90 0//2 22 20 0 E En ng giin ne e E EX XP PL LO OD DE ED D V VIIE EW W — — O OIIL L F FIIL LT TE ER R A AN ND D O OP PT TIIO ON NA AL L O OIIL L F FIIL LL L T TU UB BE E ITEM PART # QTY. DESCRIPTION ITEM PART # QTY. DESCRIPTION 1 94820 1 Expansion Plug 64 74908 2 M5 X 12 Taptite 2 91848 1 Oil Filter Gasket 65 91475 1 Dipstick ASM 3A 88758 1 Oil Blockoff 66 90388 1 M6 X 12 Taptite 3B 84982 1 Oil Filter Adapter 67 22473 1 M6 Flat Washer 4 92978 2 M6 X
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G Ge en ne er ra ac c G GN N- -1 19 90 0//2 22 20 0 E En ng giin ne e E EX XP PL LO OD DE ED D V VIIE EW W — — L LO OW W O OIIL L S SH HU UT TD DO OW WN N A AN ND D G GO OV VE ER RN NO OR R ITEM PART # QTY. DESCRIPTION 7 78653 1 Run/Stop Switch ITEM PART # QTY. DESCRIPTION 8 85272 1 LED Assembly 21 86962 1 Governor Lever 8A 86753 1 LED Assembly 22 85953 1 Wear Washer 9 84195 1 L.O.S. Decal 23 83502 1 Adjust Screw 10 85620 1 Black Sleeving 24 83512 1 M8 X 15 Taptite 11 00285271 1 Black Wi
