Generac Power Systems 00919-0 Owner's Manual

Air-cooled recreational vehicle generator

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Manual No. A5596
®
GENERAC
Air-cooled Recreational
Vehicle Generator
OWNER'S MANUAL
General
General
Inf
ormation
Inf
ormation
®
GENERAC
CORPOR ATION
Model No. 00919-0
Series NP-50LPG
THIS SYMBOL POINTS OUT IMPORTANT SAFETY INSTRUCTIONS, WHICH, IF NOT FOLLOWED, COULD ENDANGER THE
PERSONAL SAFETY AND/OR PROPERTY OF YOURSELF AND OTHERS. READ AND FOLLOW ALL INSTRUCTIONS IN THE
MANUAL BEFORE ATTEMPTING TO OPERATE THIS UNIT.
Revision 1 (6/1/98)
Printed in U.S.A.

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Summary of Contents for Generac Power Systems 00919-0

  • Page 1 ® GENERAC CORPOR ATION Model No. 00919-0 Series NP-50LPG THIS SYMBOL POINTS OUT IMPORTANT SAFETY INSTRUCTIONS, WHICH, IF NOT FOLLOWED, COULD ENDANGER THE PERSONAL SAFETY AND/OR PROPERTY OF YOURSELF AND OTHERS. READ AND FOLLOW ALL INSTRUCTIONS IN THE MANUAL BEFORE ATTEMPTING TO OPERATE THIS UNIT.
  • Page 2: Safety Rules

    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 unit, are therefore, not all-inclusive.
  • Page 3: Identification Record

    Generac NP-50LPG Recreational Vehicle Generator IDENTIFI- CATION RECORD Please record the following information from the generator DATA DECAL or information decal. 1. Model Number_______________________ 3. kW Rating___________________________ REFERENCE NUMBER IDENTIFICATION 1. Generator Air Intake Screen 2. Data Decal 3. Oil Dipstick 4.
  • Page 4: Table Of Contents

    Generac NP-50LPG Recreational Vehicle Generator TABLE CONTENTS SAFETY RULES...2 IDENTIFICATION RECORD...3 GENERAL FEATURES ...3 READ THIS MANUAL THOROUGHLY ...5 Operation and Maintenance...5 How to Obtain Service ...5 GENERATOR FAMILIARIZATION ...6 Generator Applicability ...6 Installation ...6 Safety ...6 Generator AC Connection System ...6 OPERATION ...7-11...
  • Page 5: Read This Manual Thoroughly

    The warranty on your generator is included in the Owner’s Manual, as well as listings for repair parts. SERVICE DEALER LOCATION TO LOCATE THE NEAREST GENERAC SERVIC- ING DEALER, PLEASE CALL OUR 800 NUMBER. ONLY DEALER LOCATION INFORMATION CAN BE...
  • Page 6: Generator Familiarization

    Generac NP-50LPG Recreational Vehicle Generator GENERAL INFORMA- TION GENERATOR APPLICABILITY These generators have been designed and manufactured for supplying electrical power for recreational vehicles. You should not modify the generator or use it for any application other than for what it was designed. If there are any questions pertain- ing to its application, write or call the factory.
  • Page 7: Generator Control Panel

    Generac NP-50LPG Recreational Vehicle Generator GENERATOR CONTROL PANEL Mounted on the generator control panel (Figure 2) are the fol- lowing features: Figure 2 — Generator Control Panel FUEL PRIMER Before starting a cold engine (if it has not been started in more than two weeks), you must press this switch to bring fuel from the tank to the fuel regulator.
  • Page 8: Before Starting The Engine

    Generac NP-50LPG Recreational Vehicle Generator BEFORE STARTING THE ENGINE IMPORTANT: INSTRUCTIONS AND INFORMATION IN THIS MANUAL ASSUME THE GENERATOR HAS BEEN PROP- ERLY INSTALLED, CONNECTED, SERVICED, TESTED AND ADJUSTED BY A QUALIFIED INSTALLATION TECHNICIAN OR INSTALLATION CONTRACTOR. INSTALLATION Generator installation must have been properly completed so it complies with all applicable codes, standards and regula- tions and with the manufacturer's recommendations.
  • Page 9: Stopping The Generator

    Hair Dryer...1200 Hand Drill (1”)...1100 Hedge Trimmer ...450 Impact Wrench...500 Generac NP-50LPG Recreational Vehicle Generator LET ENGINE STABILIZE The generator supplies correct rated voltage only at proper governed speed. Some electrical appliances may be extremely sensitive to voltage. Incorrect voltages can damage those appliances.
  • Page 10: Additional Information

    Generac NP-50LPG Recreational Vehicle Generator Induction type motors (such as those that run the vehicle’s furnace fan, refrigerator, air conditioner, etc.) need about 2- 1/2 time more watts of power for starting than for running (for a few seconds during motor starting). Be sure to allow for this when connecting electrical loads to the generator.
  • Page 11: Operation

    MERSION If the recreational vehicle generator has been submerged in water, it must NOT be started or operated. Following any sub- mersion in water, have an authorized Generac Service Facility thoroughly clean and dry the generator. OPERATING PRECAUTIONS Never operate the generator set while the vehicle is parked over dry leaves, dry grass or any other combustible substance.
  • Page 12: Specifications

    Generac NP-50LPG Recreational Vehicle Generator FUEL REQUIREMENTS The “NP” series generator is equipped with a liquefied petro- leum (LP) gas fuel system. LP gas is usually supplied as a liquid in pressure tanks. “NP” series generators require a “vapor withdrawal” type fuel system.
  • Page 13: Maintenance

    Generac NP-50LPG Recreational Vehicle Generator This section includes information about simple maintenance which includes the following tasks. • Checking engine oil level • Changing engine oil • Changing oil filter • Clean or change the air cleaner • Cleaning the air intake screen •...
  • Page 14: Engine Air Cleaner

    Generac NP-50LPG Recreational Vehicle Generator ENGINE AIR CLEANER Clean and re-oil the foam pre-cleaner every three months or every 25 operating hours, whichever comes first. Service more frequently if operating under extremely dusty or dirty con- ditions (Figure 10): • Remove both screws to loosen cover.
  • Page 15: Spark Arrestor Muffler

    For assistance in ordering, installing and maintaining spark arrestor exhaust mufflers, contact your nearest authorized service facility. Exhaust mufflers supplied by Generac are spark arrestor types. Generac exhaust muffler for recreational vehicle gen- erators do not have a spark arrestor screen, but are of the more efficient “toroid”...
  • Page 16: Major Service Manual

    If you suspect that drive belt tension is incorrect, contact an authorized service facility. EXERCISING THE GENERATOR Generac recommends that you start and operate the genera- tor at least once every seven days. Let the unit run for at least 30 minutes to “exercise” the engine.
  • Page 17: Troubleshooting

    Generac NP-50LPG Recreational Vehicle Generator PROBLEM Engine won’t crank. Engine cranks but won't start Engine starts hard, runs rough. Engine starts, shuts down when Start/Stop switch is released. No AC output from generator. TROUBLESHOOTING POINTS CAUSE 1. 15 amp fuse blown.
  • Page 18: Electrical Data

    Generac NP-50LPG Recreational Vehicle Generator ELECTRICAL DATA Drawing No. 94210 R e c r e a t i o n a l V e h i c l e G e n e r a t o r...
  • Page 19 Generac NP-50LPG Recreational Vehicle Generator ELECTRICAL DATA Drawing No. 94210 R e c r e a t i o n a l V e h i c l e G e n e r a t o r...
  • Page 20: Repair Parts

    Generac NP-50LPG Recreational Vehicle Generator EXPLODED VIEW — BASE AND PULLEYS Drawing No. 95865 R e c r e a t i o n a l V e h i c l e G e n e r a t o r...
  • Page 21 Generac NP-50LPG Recreational Vehicle Generator REPAIR PARTS — BASE AND PULLEYS ITEM DESCRIPTION BASE, MOUNTING GROUND CABLE MOUNT, (RUBBER) CAPSCREW, .-3/8"-16 x 1/2" 25017 LOCKWASHER-M10 LOCKWASHER-M8 SKID, RUBBER MOUNT SAFETY BOLT 5/16"-18 x 3 1/2" 77603 NUT, HEX-5/16-18 NUT, FLANGED LOCK-M8-1.25 52858 CAPSCR.
  • Page 22 Generac NP-50LPG Recreational Vehicle Generator EXPLODED VIEW — ALTERNATOR AND PANEL Drawing No. 94106 R e c r e a t i o n a l V e h i c l e G e n e r a t o r...
  • Page 23 Generac NP-50LPG Recreational Vehicle Generator REPAIR PARTS — ALTERNATOR AND PANEL ITEM DESCRIPTION Lower Bearing Carrier 50 Rotor Assembly 50 Stator Assembly Ball Bearing Ball Bearing Upper Bearing Carrier Stator Stud M8-1.25 Flange Lock Nut Brush Holder M5-0.8 x 16 Taptite...
  • Page 24 Generac NP-50LPG Recreational Vehicle Generator EXPLODED VIEW — ENGINE ENCLOSURE Drawing No. 94108 R e c r e a t i o n a l V e h i c l e G e n e r a t o r...
  • Page 25 Generac NP-50LPG Recreational Vehicle Generator REPAIR PARTS — ENGINE ENCLOSURE ITEM PART NO. QTY. DESCRIPTION 90953 SCROLL, FLYWHEEL 45756 SCREW, TAPTITE M6-1.0 x 10 LG 90388 SCREW, TAPTITE M6-1.0 x 12 LG 91222-A FLYWHEEL (20 DEG.) 67198-N WASHER, BELLVILLE M20 67890 NUT, M20 x 1.5...
  • Page 26 Generac NP-50LPG Recreational Vehicle Generator EXPLODED VIEW — GN-410 ENGINE Drawing No. B2195 R e c r e a t i o n a l V e h i c l e G e n e r a t o r...
  • Page 27 Generac NP-50LPG Recreational Vehicle Generator REPAIR PARTS — GN-410 ENGINE ITEM PART NO. QTY. DESCRIPTION 71977 PISTON RING SET 71979 CONNECTING ROD BOLT 72637 CONNECTING ROD WITH CAP AND BOLT 71980 PISTON PIN 71983 PISTON PIN RETAINER 73142 CYLINDER HEAD GASKET 73144 FLANGED HEX HD.
  • Page 28 Generac NP-50LPG Recreational Vehicle Generator EXPLODED VIEW — ENGINE ACCESSORIES Drawing No. 95866 R e c r e a t i o n a l V e h i c l e G e n e r a t o r...
  • Page 29 Generac NP-50LPG Recreational Vehicle Generator REPAIR PARTS — ENGINE ACCESSORIES ITEM PART NO. QTY. DESCRIPTION 90896 MANIFOLD, INTAKE 91039 GASKET, MANIFOLD/HEAD 68527 BOLT, HEX HD. CAPSCR. & LOCK WASHER-M6-1.0 x 20 72347 SPARK PLUG, CHAMPION #RC12YC 89228 GASKET, CARB./MANIFOLD A2775A...
  • Page 30: Emissions Warranty

    Generac Corporation recommends that you retain all receipts covering maintenance on your recreational vehicle generator engine, but Generac Corporation will not deny warranty solely due to the lack of receipts or for your failure to provide written evidence of the performance of all scheduled maintenance.
  • Page 31 Corporation ECS warranty obligations. 9. Unapproved add-on modified parts may not be used to modify or repair a Generac Corporation engine. Such use voids this ECS Warranty and shall be sufficient grounds for disallowing an ECS Warranty claim. Generac Corporation shall not be liable hereunder for failures of any warranted parts of a Generac Corporation engine caused by the use of such an unapproved add-on or modified part.
  • Page 32 GENERAC warrants to the original purchaser that its generators will be free from defects in materials or workmanship for the period set forth below from the date of original purchase. During said warranty period, Generac will, at its option, repair or replace any part which, upon examination by Generac or Generac Authorized Distributors and/or Dealers, is found to be defective under normal use and service.

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Np-50lpg series

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