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Generac Power Systems GP Series Diagnostic Repair Manual
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Generac Power Systems GP Series Diagnostic Repair Manual

Generac Power Systems GP Series Diagnostic Repair Manual

Large portable generators with electronic fuel injection
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DIAGNOSTIC
REPAIR
MANUAL
GP Series Large Portable Generators
with Electronic Fuel Injection
MODELS:
GP15500E 816 EFI
GP18000E 816 EFI
Important Note: Always use the unit specific Schematics and
Wiring Diagrams for troubleshooting.
P O R T A B L E G E N E R AT O R S

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Summary of Contents for Generac Power Systems GP Series

  • Page 1 DIAGNOSTIC REPAIR MANUAL GP Series Large Portable Generators with Electronic Fuel Injection MODELS: GP15500E 816 EFI GP18000E 816 EFI Important Note: Always use the unit specific Schematics and Wiring Diagrams for troubleshooting. P O R T A B L E G E N E R AT O R S...
  • Page 2 Safety Read This Manual Thoroughly Throughout this publication and on tags and decals This diagnostic manual has been written and published affixed to the generator, DANGER, WARNING, and by Generac to aid dealer technicians and company CAUTION blocks are used to alert personnel to special service personnel when servicing the products described instructions about a particular operation that may be herein.
  • Page 3 Table of Contents Safety ................ ii Test 2 – Check Main Circuit Breaker ...... 25 Read This Manual Thoroughly ........ii Test 3 – Test Excitation Circuit Breaker ....26 Replacement Parts ........... ii Test 4 – Fixed Excitation Test/Rotor Amp Draw Test............
  • Page 4 Table of Contents Test 31 – Troubleshooting Throttle Position, Tem- perature and Manifold Air Pressure Sensor (TTMAP) (Fault codes 6-2, 6-3, 6-4, 6-5, 6-6) ..49 Test 32 – Troubleshooting Ignition System Faults (Fault codes 4-1, 4-2 Cylinder 1 / 4-3, 4-4 Cylinder 2) ........
  • Page 5 Table of Contents Know Generator Limits Device Running Watts Overloading a generator can result in damage to the Electric Blanket generator and connected electrical devices. Observe Electric Nail Gun 1200 the following to prevent overload: Electric Range (per element) 1500 •...
  • Page 6 Table of Contents Specifications GP 15,500 GP 18,000 Rotor and Stator Resistance Tables G0077050 G0077060 Model Number G0089170 (50-state) Rotor 10000020923 10000021319 Stator 10000020983 10000021307 0.1700 ± 0.0128 Ω 0.1168 ± 0.0088 Ω Stator Resistance @ 20°C 8.46 ± 0.63 Ω 9.28 ±...
  • Page 7 Description and Components Section 1 Introduction Engine-Generator Drive System The generator revolving field (rotor) is driven by an air- Figure 1-1. The generator revolving field is driven cooled engine at 3600 rpm. by an air-cooled, horizontal crankshaft engine. The generator is directly coupled to the engine crankshaft. The generator may be used to supply electrical power Both the engine and generator rotor are driven at for the operation of 120 and, or 240 volts, single-phase,...
  • Page 8 Section 1 Description and Components Stator Assembly The stator can houses the dual AC power windings and an excitation winding. See Figure 1-2. A total of nine (9) stator leads extend from the stator can. To control panel terminal blocks To control panel 12-pin connector 014985...
  • Page 9 Section 1 Description and Components Other AC Generator Components Some AC generator components are housed in the generator control panel enclosure. These are the excitation circuit breaker, the automatic voltage regulator (AVR), and the main line circuit breaker. Excitation Circuit Breaker Figure 1-5.
  • Page 10 Section 1 Description and Components resistor limits current flow, and the diode blocks AVR DC sensing signals, it regulates the flow of direct current to output from feeding back into the field flash circuit. Once the rotor. The rectified and regulated current flow from through the resistor and diode Wire 4 supplies signal to the regulator is delivered to the rotor winding via Wire 4 the positive brush.
  • Page 11 Electronic Engine Control Section 2 Engine Control Components Engine Control Module Figure 2-9. The Generac 816cc engine is a 2- cylinder, internal combustion, spark-ignited engine. The engine is controlled by an engine control module (ECM). The ECM controls the combustion process to maintain optimal engine performance.
  • Page 12 Section 2 Electronic Engine Control Fuel Pump Ignition Coils Figure 2-13. The fuel pump is located in fuel tank. Figure 2-16. The ignition coils (IC1 and IC2) receive The fuel pump (FP) (Item A) receives 12 VDC supply signal from the ECM to generate and deliver a high voltage from MPR to activate and deliver fuel to the fuel voltage signal to the spark plugs.
  • Page 13 Section 2 Electronic Engine Control 014999 015002 Figure 2-18. Crankshaft Position Sensor Figure 2-21. Oxygen Sensor Oil Pressure Switch Figure 2-22. The engine is equipped with a normally open type, low oil pressure switch (OPS) (Item D) which opens the circuit between the terminals when oil pressure drops below a set threshold.
  • Page 14 Section 2 Electronic Engine Control Voltage Regulator Figure 2-27 Figure 2-28. The engine mounted voltage regulator (VR) (Item E) works in conjunction with the engine stator to generate charging voltage for the 12 VDC battery during operation. 015005 Figure 2-24. CO Module Current Transformer Figure 2-25.
  • Page 15 Section 2 Electronic Engine Control Engine Control Locations 015011 Figure 2-30. Engine Control Locations Oil pressure switch (OPS) Ignition coils (IC1, IC2) Engine head temperature sensor (EHT) Crankshaft position sensor (CPK) Fuel injectors (INJ1, INJ2) Engine control module (ECM) connector Throttle body with electronic throttle control Control panel harness connector (ETC)
  • Page 16 Section 2 Electronic Engine Control Control Panel Components 015012 Figure 2-31. External Control Panel Components 1P 20A Circuit Breaker 30A outlet (NEMA L14-30R) Key Start Switch 2P 50A Circuit Breaker 30A outlet (NEMA L5-30R) Malfunction Indicator Lamp (MIL) 50A Outlet (NEMA 14-50R) 1P 30A Circuit Breaker Hour Meter 20A Outlet (NEMA 5-20R)
  • Page 17 Section 2 Electronic Engine Control 015014 Figure 2-33. Control Panel Connections 12-Pin Alternator Connector and Terminal Block Wire 11 Connector and Receptacle to Receptacle Engine Wire Harness Terminal Block Wire 22 Terminal Block Wire 44 8 9 10 11 12 13 14 12 11 10 14 13 12 11 10 9 7 6 5 4 3 2...
  • Page 18 Section 2 Electronic Engine Control Wire View Non-wire Insertion View 015017 Figure 2-36. Engine Control Module (ECM) FUNCTION FUNCTION Main Power Relay Battery Starter Relay Power Supply Driver Oxygen Sensor Heater Sensor Fuel Injector 1 Sensor Digital Output Fuel Injector 2 Driver Ground Malfunction Indicator Lamp...
  • Page 19 Section 2 Electronic Engine Control Fuel System Figure 2-37. EFI fuel systems consist of a fuel tank mounted pump (with integrated regulator), and an injector. Fuel is drawn from the tank by the pump, which provides working fuel pressure to the injector. Fuel pressure limit is controlled by the fuel pressure regulator located in the fuel pump, discharging unused fuel back into the tank.
  • Page 20 Section 2 Electronic Engine Control Operational Analysis—Key OFF Ground to Panel Outlets Ground to Brush Assy 12 VDC supply to KSS and MPR Ground to CO_MON Figure 2-38. Operational Analysis—Key OFF Diagnostic Repair Manual...
  • Page 21 Section 2 Electronic Engine Control Operational Analysis—Key OFF Ground and 12 VDC supply to VR 12 VDC supply and ground to SM Figure 2-39. Operational Analysis—Key OFF Diagnostic Repair Manual...
  • Page 22 Section 2 Electronic Engine Control Operational Analysis—Key ON Signal to Brush Assy 12 VDC supply to FP, KSS, FBR, MPR, MIL, DB1 and SC 12 VDC control to FP, FBR, MPR, and R1 ECM ground control to MPR Signal and AC voltage to CO_MON Figure 2-40.
  • Page 23 Section 2 Electronic Engine Control Operational Analysis—Key ON Ground and signal to TTMAP and EHT Signal and 12 VDC supply to OPS 12 VDC control to ETC Signal, Ground, 12 VDC control, and 12 VDC supply to OS Figure 2-41. Operational Analysis—Key ON Diagnostic Repair Manual...
  • Page 24 Section 2 Electronic Engine Control Operational Analysis—Key ON Cranking CT Signal to ECM for AVR sensing 12 VDC supply from KSS to ECM 12 VDC control and 12 VDC supply to Figure 2-42. Operational Analysis—Key ON Cranking Diagnostic Repair Manual...
  • Page 25 Section 2 Electronic Engine Control Operational Analysis—Key ON Cranking AC voltage from Stator 12 VDC control and 12 VDC supply to INJ1, INJ2, IC1, and Figure 2-43. Operational Analysis—Key ON Cranking Diagnostic Repair Manual...
  • Page 26 Section 2 Electronic Engine Control Operational Analysis—Key ON Running AC voltage to Panel Outlets Figure 2-44. Operational Analysis—Key ON Running Diagnostic Repair Manual...
  • Page 27 Section 2 Electronic Engine Control Operational Analysis—Key ON Running 5 VDC supply to TTMAP Figure 2-45. Operational Analysis—Key ON Running Diagnostic Repair Manual...
  • Page 28 Section 2 Electronic Engine Control This page intentionally left blank. Diagnostic Repair Manual...
  • Page 29 AC Troubleshooting Flowcharts Section 3 Introduction Use the Flow Charts in conjunction with the AC Diagnostic Tests . Test numbers used in the flow charts correspond to the numbered tests in the AC Diagnostic Tests . The first step in using the flow charts is to identify the correct problem on the following pages.
  • Page 30 Section 3 AC Troubleshooting Flowcharts Problem 3 – Voltage & Frequency Are Both High or Low TEST 8 – CHECK LOAD VOLTAGE & FREQUENCY TEST 9 – CHECK LOAD WATTS AND AMPER- TEST 10 – ADJUST VOLTAGE REGULATOR TEST 34 – TROUBLESHOOTING ELECTRONIC THROTTLE CONTROL VALVE Problem 4 –...
  • Page 31 AC Diagnostic Tests Section 4 Introduction available from the manufacturer (PN 0J09460SRV) to work with AMP connector plugs. Another alternative is to This section familiarizes the service technician with use approved back probes from the back side of the acceptable procedures for the testing and evaluation of connector.
  • Page 32 Section 4 AC Diagnostic Tests With generator shut down, disconnect all wires from suspected circuit breaker terminals to prevent 00.00 interaction. Figure 4-47. With the generator shut down, connect one meter test lead to one terminal of the breaker and the other meter test lead to the other terminal.
  • Page 33 Section 4 AC Diagnostic Tests Set DMM to measure AC voltage Figure 4-52. Connect the positive meter test lead to Wire 14. Figure 4-49. Disconnect Wire 2 from the excitation circuit breaker and connect one meter test lead to it. Connect the other meter test lead to Wire 6.
  • Page 34 Section 4 AC Diagnostic Tests Test 5 – Check Continuity of NOTE: Connect a small jumper lead to the individual pin for easier access. Receptacle Panel b. Connect the other meter test lead to Wire 11 at Procedure the voltage regulator. Set DMM to measure Resistance.
  • Page 35 Section 4 AC Diagnostic Tests If the stator passes all tests refer back to the flow Table 4-3. Actual Resistance Values chart. Stator Wire 15.5 kW 18 kW Winding Number Test 8 – Check Load Voltage and Power 11 – 22 0.0786 - 0.0914 0.0540 - 0.0628 Frequency...
  • Page 36 Section 4 AC Diagnostic Tests Be sure to allow for high starting wattage when selecting electrical devices to connect to the generator: Calculate watts needed to start the largest motor. Add to that figure the running watts of all other connected loads.
  • Page 37 Engine Diagnostic Tests Section 5 Malfunction Indicator Lamp (MIL) The MIL, located on the control panel, is used to indicate • Once the fault(s) have been resolved, the codes when there is a fault in the engine system. The fault lamp will be saved in the ECM fault history memory.
  • Page 38 Section 5 Engine Diagnostic Tests Fault Indicator Codes Fault Circuit at Fault Fault Type Go To… Code Action Off the Engine Shutdown Carbon Monoxide CO above limit or input voltage below normal Verify unit has appropriate ventilation Monitor range Check CO monitor connections Shutdown Battery Voltage Battery (ECM-1J) or Driver (ECM-1K) voltage Battery voltage regulator (VE+)
  • Page 39 Section 5 Engine Diagnostic Tests Fault Circuit at Fault Fault Type Go To… Code Action Ignition Shutdown Ignition Coil - Current measured though ECM-4M is below Disconnect coil and test resistance Cylinder 1 normal range, coil resistance high Faulty coil Shutdown Ignition Coil - Current measured though ECM-4M is above Disconnect coil and test resistance...
  • Page 40 Section 5 Engine Diagnostic Tests Fault Circuit at Fault Fault Type Go To… Code Action Temperatures and Pressures Shutdown Engine Oil Low oil pressure or switch voltage not detected Check oil level Pressure Check wiring harness and connections to harness Faulty sensor Warning Intake Manifold...
  • Page 41 Section 5 Engine Diagnostic Tests Diagnostic Flow Charts Use the Flow Charts in conjunction with the numbered tests in this section. Test numbers used in the flow charts correspond to the numbered tests. The first step in using the flow charts is to identify the correct problem on the following pages.
  • Page 42 Section 5 Engine Diagnostic Tests Introduction Procedure Perform the Diagnostic Tests in this section in Remove and inspect fuse(s). conjunction with the Diagnostic Flow Charts. Test Results numbers in this chapter correspond to numbered tests in the flow charts. If fuse element melted open, replace fuse with an NOTE: Test procedures in this manual are not identical size fuse.
  • Page 43 Section 5 Engine Diagnostic Tests b. 0.10-0.20 VDC on a ground connection. a. No continuity should be measured between terminals. c. 0.20-0.30 VDC across a wire or cable (V1, V2). Set the KSS to the ON position. d. 0.20-0.30 VDC across a switch or starter a.
  • Page 44 Section 5 Engine Diagnostic Tests Procedure Verify battery has been fully charged and checked before proceeding. Set a DMM to measure DC voltage (12 VDC). Connect meter positive (+) test lead to starter contactor stud (the small jumper wire connected to starter). Connect common (-) test lead to starter motor frame.
  • Page 45 Section 5 Engine Diagnostic Tests Results Clean and gap or replace spark plug(s) as neces- sary. Refer to flow chart. Test 17 – Check Engine / Cylinder Leak Down Test / Compression Test Introduction 002075 Figure 5-70. Checking Engine Misfire Performing the following test procedures will accurately diagnose some of the most common problems: If spark jumps tester gap intermittently, the problem...
  • Page 46 Section 5 Engine Diagnostic Tests Remove both spark plugs. fault lies before disassembling the engine. Figure 5-75 represents a standard tester available on the market. Remove air cleaner cover and air filter NOTE: Refer to the tool manufacturer's instructions for Use a finger to manually open throttle plate to wide variations of this procedure.
  • Page 47 Section 5 Engine Diagnostic Tests and the crankcase breather. This will help determine where the fault lies. Repeat Steps 1–9 on remaining cylinder if applicable. Results • Air escapes at the air intake – check intake valve. 015013 Figure 5-77. CONN1P Connector Air escapes through the exhaust –...
  • Page 48 Section 5 Engine Diagnostic Tests c. shorts to ground Keep CONN1P Connector disconnected. Reconnect the ECM connector. Verify 12 VDC on both Wires 14C on the ECM side of the CONN1P Connector (coming from the ECM). Set key switch to the KSS—Key Start position to crank engine.
  • Page 49 Section 5 Engine Diagnostic Tests Results Remove the oil pressure gauge and reinstall the oil pressure switch. Do NOT connect Wire 566 or Wire If engine cannot turn over freely with spark plug 14C to the switch terminals. removed, either: a.
  • Page 50 Section 5 Engine Diagnostic Tests Procedure – Testing Circuit b. If voltage measured greater than 12.5 VDC, but less than 16 VDC, go to Step 4. NOTE: During these tests, the engine will not be running. Set DMM to measure AC Volts and check for NOTE: The fuel pump fuel filter must be submerged in voltage on two yellow wires coming from the fuel in order for fuel to be pressurized in the system.
  • Page 51 Section 5 Engine Diagnostic Tests Procedure – Testing Fuel Pressure a. If the voltage value is not correct, check for minimum battery voltage at the battery. IMPORTANT NOTE: Fuel pump assembly is not b. If the battery voltage is correct and the voltage warrantied if damaged by contaminated fuel.
  • Page 52 Section 5 Engine Diagnostic Tests Test 23 – Check Current Transformer (CT) General Theory An EFI unit monitors load (current) through a current transformer (CT1) mounted in the control panel. CT1 provides an AC output signal proportional to the current flowing in the main winding leads (Wire 11 and Wire 44).
  • Page 53 Section 5 Engine Diagnostic Tests Test 25 – Engine Over Temperature Diagnostic General Theory The ECM monitors the engine head temperature sensor 015017 Wire View Non-wire Insertion View (EHT) for overheating. Figure 5-88. ECM Harness Connector Procedure Test 27 – Testing Engine Head NOTE: During these tests, the engine will not be running.
  • Page 54 Section 5 Engine Diagnostic Tests b. If the harness connector for the cylinder head Table 5-5. Engine Head Temperature Sensor (EHT) temperature sensor appears compromised or Resistance damaged, replace the wire harness. Figure 5-91. Disconnect the Cylinder Head approx. 14.5 Ohms YE to GN/YE Terminals Temperature Sensor and the 48-pin ECM harness @ambient temp...
  • Page 55 Section 5 Engine Diagnostic Tests Test 30 – Troubleshooting Crank Table 5-6. LED Notifications Position Sensor (CKP) (Fault code 5-7) Yellow Short Flash The crankshaft sensor (CKP) can be unplugged from the harness and tested for resistance. Yellow Solid Red Short Flash Coil Resistance 130 ohms ±30% Red Solid...
  • Page 56 Section 5 Engine Diagnostic Tests Testing Ignition Coil In the event of a fault, test the sensor using the following method: To test an ignition coil, disconnect the electrical Use needle type back probes to verify Wire 820G connection and the primary wire from the coil. is grounded to the main ground point on the NOTE: It may be necessary to remove the coil from the engine.
  • Page 57 Section 5 Engine Diagnostic Tests Connect one meter test lead to terminal C of the 770A ECM-1H sensor and connect the other meter test lead to 771A ECM-1G terminal D. 770B ECM-1F Start engine. 771B ECM-1E Once engine is running and stabilized, the generator to greater than 25% of the generators load.
  • Page 58 Section 5 Engine Diagnostic Tests This page intentionally left blank. Diagnostic Repair Manual...
  • Page 59 Disassembly Section 6 Exploded View – GP15500E 816cc EFI Diagnostic Repair Manual...
  • Page 60 Section 6 Disassembly GP15500E Frame and Ground FRAME GROUND WIRE TO FRAME 015591 GP15500E Fuel Tank 015592 Diagnostic Repair Manual...
  • Page 61 Section 6 Disassembly GP15500E Engine 015593 GP15500E Muffler 015594 GP15500E Wheels 015595 Diagnostic Repair Manual...
  • Page 62 Section 6 Disassembly GP15500E CO Module 015596 GP15500E Control Panel and Automatic Voltage Regulator 015597 Diagnostic Repair Manual...
  • Page 63 Section 6 Disassembly GP15500E Decals 015598 GP15500E Alternator 015599 GP15500E Foot Brackets 015600 Diagnostic Repair Manual...
  • Page 64 Section 6 Disassembly GP15500E Battery 015601 GP15500E Handles 015602 Exploded View – GP15500E 816cc EFI ITEM DESCRIPTION ITEM DESCRIPTION WASHER FLAT M5 FRAME GP 816CC PORT SCREW HHC M5-0.8 X 16 G8.8 WELDMENT SPANNER TUBE SCREW BHSC M6- 1.0 X 12 ZC SCREW BHSC M8-1.25 X 45MM COVER FUEL PUMP WELDMENT SIDE PANEL EXH...
  • Page 65 Section 6 Disassembly ITEM DESCRIPTION ITEM DESCRIPTION BRACKET EXHAUST HANGER RIGHT CIRCUIT BREAKER 6A IP AUTO ETA 46-500-P VIBRATION MOUNT SCREW HHC M5-0.8 X 10 C8.8 NUT FLANGE 5/16-18 NYLOK RELAY PNL 12VDC SPDT 30A REAR BEARING CARRIER MACHINED SCREW HHC M4-0.7 X 20 C8.8 WASHER LOCK SPRING 5/16 ZC CONN, PLUG HOUSING DUAL ROW 14 POS, UL 94V-0...
  • Page 66 Section 6 Disassembly ITEM DESCRIPTION ITEM DESCRIPTION DECAL GROUND SCREW HHC M8- 1.25 X 30 C8.8 NUT HEX FL WHIZ M6- 1.0 WASHER FLAT 0.3441 D X 1.0 OD STEEL TAG, OIL FILL NUT HEX 5/ 16-18 STEEL DECAL START INSTRUCTIONS ITEM DESCRIPTION DECAL CLEAR POWERRUSH...
  • Page 67 Section 6 Disassembly ITEM DESCRIPTION KIT - CO-MODULE KIT - WHEEL ASSEMBLY KIT - FOOT BRACKETS KIT - BATTERY ASSEMBLY KIT - GROUNDING WIRE TO FRAME FUEL GAGE Diagnostic Repair Manual...
  • Page 68 Section 6 Disassembly Exploded View – GP18000E 816cc EFI Diagnostic Repair Manual...
  • Page 69 Section 6 Disassembly GP18000E Frame and Ground GROUND WIRE TO FRAME FRAME 015603 GP18000E Fuel Tank 015604 Diagnostic Repair Manual...
  • Page 70 Section 6 Disassembly GP18000E Engine 015605 GP18000E Muffler 015606 GP18000E Wheels 015607 Diagnostic Repair Manual...
  • Page 71 Section 6 Disassembly GP18000E CO Module 015608 GP18000E Control Panel and Automatic Voltage Regulator AUTOMATIC VOLTAGE REGULATOR CONTROL PANEL ASSEMBLY 015609 Diagnostic Repair Manual...
  • Page 72 Section 6 Disassembly GP18000E Decals 015610 GP18000E Alternator 015611 GP18000E Foot Brackets 015612 Diagnostic Repair Manual...
  • Page 73 Section 6 Disassembly GP18000E Battery 015613 GP18000E Handles 015614 Exploded View – GP18000E 816cc EFI ITEM DESCRIPTION ITEM DESCRIPTION COVER FUEL PUMP BLACK FRAME SCREW BHSC M6-1.0Xl2SS WELDMENT SPANNER TUBE SCREW HHC MS-0.8 X 16 G8.8 SCREW BHSC M8-1.25 X 45MM BLACK WASHER FLAT MS WELDMENT SIDE PANEL EXH CLAMP HOSE STEPLESS 14.5...
  • Page 74 Section 6 Disassembly ITEM DESCRIPTION ITEM DESCRIPTION WASHER LOCK SPRING 3/8 ZC COVER CONTROL PANEL ALT WIRES SCREW HHC 3/8-24 X 15. 50 NUT HEX LOCK M5-0.8 NY INS ZINC NUT FLANGE 5/16-18 NYLOK AUTOMATIC VOLTAGE REGULATOR REAR BEARING CARRIER MACHINED SCREW HHC M5-0.8 X 30 C8.8 VIB MNT 1.5 X 1.38 X 5/16-18 AVR MOUNT BRACKET...
  • Page 75 Section 6 Disassembly ITEM DESCRIPTION ITEM DESCRIPTION NUT HEX M6-1.0 G8 CLEAR ZINC SCREWHHCM81.25X30C8.8 WASHER LOCK SPRING I/ 4 ZC ST03 WELDMENT FOOT 816 PORT BLACK WASHER FLAT I /4-M6 STEEL ZINC SCREW HHFC M8-1.25 X 16 C8.8 MOUNTING CLIP RES 25R 5% 25W ST03 GUSSET FOOT 816 PORT SCREWHHCM6-1.0X65C8.8 J - BOLT MS- 1.2 5 X 2 2 5...
  • Page 76 Section 6 Disassembly ITEM DESCRIPTION KIT - WHEEL ASSEMBLY KIT - FOOT BRACKETS KIT - BATTERY ASSEMBLY KIT - GROUNDING WIRE TO FRAME FUEL GAGE TORQUE SPECIFICATIONS Flywheel nut 150 ft-lbs 203.3 Nm Cylinder head bolts 22 ft-lbs 29.8 Nm Valve cover bolts 4.8-5.5 ft-lbs 6.5-7.4 Nm...
  • Page 77 Electrical Data Section 7 Introduction Go to www.generac.com (http://www.generac.com/service-support/product-support-lookup) for the most current wiring diagrams and electrical schematics. Use model or serial number. Diagnostic Repair Manual...
  • Page 78 Section 7 Electrical Data Wiring Diagram, 816 cc EFI G26 Drawing No. A0000984009-D Diagnostic Repair Manual...
  • Page 79 Section 7 Electrical Data Wiring Diagram, 816 cc EFI G26 Drawing No. A0000984009-D Diagnostic Repair Manual...
  • Page 80 Section 7 Electrical Data Wiring Diagram, 816 cc EFI G26 Drawing No. A0000984009-D Diagnostic Repair Manual...
  • Page 81 Section 7 Electrical Data Wiring Diagram, 816 cc EFI G26 Drawing No. A0000984009-D Diagnostic Repair Manual...
  • Page 82 Section 7 Electrical Data Schematic Diagram, 816 cc EFI G26 Drawing No. A0000984010-G Diagnostic Repair Manual...
  • Page 83 Section 7 Electrical Data Schematic Diagram, 816 cc EFI G26 Drawing No. A0000984010-G Diagnostic Repair Manual...
  • Page 84 ©2023 Generac Power Systems, Inc. S45 W29290 Hwy. 59 All rights reserved. Waukesha, WI 53189 Specifications are subject to change without notice. 1-888-GENERAC (1-888-436-3722) No reproduction allowed in any form without prior written www.generac.com consent from Generac Power Systems, Inc.

This manual is also suitable for:

Gp15500e 816 efiGp18000e 816 efi