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E F
FUEL
R
PORTABLE GASOLINE
GENERATORS
OWNER’S OPERATION AND INSTALLATION MANUAL
Generator Model: MGH8500IE
IMPORTANT: Read and understand this manual before operating or servicing
generator. Improper use of generator can cause serious injury. Keep this
manual for future reference.
120V 120V
GFCI 120V TWISTLOCK
RESET
TEST
HOUR METER
120/240V
120/240V
ENM TWISTLOCK
TWISTLOCK
00000005
HOURS 1/10
AUTO-IDLE
OFF ON
RESET RESET RESET RESET
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R PORTABLE GASOLINE GENERATORS 1. Gasoline presents a hazard of fire or ex- • Do not use any worn or damaged SAFETY plosion. Gasoline is flammable. Its va- electric cords. Electric shock or dam- INFORMATION por is explosive. age to generator may result. •Keep fuel out of children’s reach. • Do not wear damp clothing or wet • Refuel generator in a well-vented shoes when using generator. WARNINGS area. Do not fill fuel tank in the dark. 4. Guard against burns. Hot engine parts IMPORTANT: Read thi
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E F FUEL OWNER’S MANUAL SAFETY PRODUCT INFORMATION IDENTIFICATION Continued 9. Only a qualified electrical service per- son should service and repair generator. • Generator produces high voltage. Gas Tank Use extreme caution when working on electrical parts. Gas Cap/Fuel Gauge •Always remove spark plug wire from spark plug before servicing. This will prevent accidental starting. Choke • When working on generator, avoid hot Lever muffler, exhaust manifold, and engine parts. Severe burns may occur
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R PORTABLE GASOLINE GENERATORS GENERAL VENTILATION HIGH AND LOW INFORMATION TEMPERATURE DANGER: Use only in well- Master portable generators are rugged and OPERATION vented areas. Make sure area has compact. These generators use brushless al- plenty of free-moving, fresh, out- Air temperature affects generator output. ternators for dependable, trouble-free service. side air. Never run generator in Output drops 1% for each 10° temperature Honda gasoline engines provide long life un- an enclosed
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RESET TEST OWNER’S MANUAL AUTO-IDLE SYSTEM GROUND FAULT CIRCUIT GENERATOR INTERRUPTER RECEPTACLE The Auto-Idle System allows the engine to FEATURES idle down or run at a slower speed when the The GFCI receptacle is on the control panel. generator is not being used to supply power. OIL ALERT SYSTEM The GFCI protects you against hazardous The Auto-idle system can be turned ON or electrical shock caused when your body The oil alert system protects the engine from OFF by a rocker switch on the contr
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R PORTABLE GASOLINE GENERATORS GENERATOR ENGINE OIL FUEL FEATURES We ship the generator without oil in the WARNING: Gasoline presents engine crankcase. You must add oil before Continued a hazard of fire or explosion. starting engine. See engine owner’s manual Gasoline is flammable. Its vapor RECEPTACLE CIRCUIT for specific oil type. is explosive. BREAKER • Keep fuel out of children’s CHECKING OIL LEVEL AND reach. The circuit breakers protect the receptacles ADDING OIL • Refuel generator in a we
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OWNER’S MANUAL 2. Locate the red, positive (+) battery BATTERY CAUTION: Do not over tighten cable from starter solenoid. Connect it Continued positive terminal on starter sole- to the positive (+) battery terminal (see noid. Positive terminal could ro- Figure 10). WARNING: Battery contains tate and cut into negative termi- 3. Locate the black, negative (–) battery sulfuric acid. Contact with skin nal, causing a short. cable attached to engine block. Connect or eyes may cause severe burns. it t
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E F FUEL R PORTABLE GASOLINE GENERATORS You must supply the ground wire and ground- GENERATOR STANDBY ing point. These do not come with generator. GROUNDING Follow the National Electrical Code and all INSTALLATION TO state and local codes. Consult your power HOME OR company or a licensed electrician. WARNING: You must prop- erly earth-ground generator be- BUILDING fore starting. This will help guard WARNING: For a grounding against deadly electric shock. WARNING: Have standby in- point, do not
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OWNER’S MANUAL 3. Electric motors present a special prob- watts figure. Note: Some motors re- DETERMINING quire nearly the same wattage to run as lem. They require up to three-times to start. These items include saws, ELECTRICAL LOAD their rated wattage to start. Chart 2, below, shows starting watts for differ- drills, hair dryers, and food mixers. See FOR GENERATOR ent size motors. For example: an elec- Chart 1 for typical appliance wattage tric motor nameplate states 5 amps at examples. You mu
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RESET TEST ENM 00000005 HOURS 1/10 120V 120V GFCI 120V TWISTLOCK HOUR METER 120/240V 120/240V TWISTLOCK TWISTLOCK AUTO-IDLE OFF ON RESET RESET RESET RESET R PORTABLE GASOLINE GENERATORS USING RECEPTACLE POWER CORD AND PLUG OPERATION REQUIREMENTS Note: Do not exceed amperage rating of GENERAL INFORMATION receptacles. Exceeding rating will trip re- 120V, 30-amp twist-lock receptacle ceptacle circuit breaker. This generator is not large enough to power • NEMA L5-30P plug your entire home. Do
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RESET TEST ENM 00000005 HOURS 1/10 120V 120V GFCI 120V TWISTLOCK HOUR METER 120/240V 120/240V TWISTLOCK TWISTLOCK AUTO-IDLE OFF ON OWNER’S MANUAL 3. Start the engine. AUTO-IDLE OPERATION OPERATION Turn the engine switch to the START Continued IMPORTANT: Never start engine with elec- position (see Figure 15). Hold it there trical loads connected. Start engine before until engine starts. When engine starts, PRESTART adding electrical loads. let switch return to the ON position. Operate gener
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R PORTABLE GASOLINE GENERATORS 4. Turn Auto-Idle switch ON. Make sure HIGH ALTITUDE OPERATION OPERATION solenoid is engaged. When engaged, the Continued This generator will not perform well at high punger is pulled back into the solenoid. altitudes without proper adjustment. See Adjusting the Idle Speed 5. If the engine speed is too slow, the en- engine owner’s manual for details. gine will want to “hunt” or speed up IMPORTANT: Adjust the idle speed only: and slow down repeatedly. When this ADDI
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OWNER’S MANUAL OPERATION MAINTENANCE STORAGE Continued AND REPAIRS WARNING: Remove all fuel from fuel tank before storing gen- STOPPING ENGINE WARNING: Only a qualified erator. Store fuel in approved con- IMPORTANT: The engine speed is preset. electrical service person should tainer. Store fuel in a well-vented The throttle is locked in preset position. Do service and repair the alternator area free of open flames or sparks. on this generator. Use only fac- not adjust throttle. tory approved r
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R PORTABLE GASOLINE GENERATORS When contacting DESA Specialty Prod- SERVICING THE TECHNICAL ucts™, have ready ENGINE SERVICE •Your Name Honda parts and services should be handled •Your Address You may have further questions about as- by your nearest authorized engine service sembling, operating, or maintaining this •Your Phone Number firm. Check the yellow pages of your tele- product. If so, you can visit our Technical • Model Number of Product phone directory under the listing: Service web site
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OWNER’S MANUAL ELECTRICAL COMPONENT SPECIFICATIONS Resistance in Ohms Stator Stator Rotor Capacitor, Main Auxiliary Primary MFD Diodes (2) Model Winding * Winding ‡ Winding † 450 Volt 1000 Volt MGH8500IE 0.431 .0962 7.782 45 8 Amp * Connect T2 (green) and T3 (black). Measure resistance between T1 (red) and T4 (blue). ‡ Resistance between brown and white leads. † Remove diodes to check resistance. 115407 15
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Stator T1 T2 T3 T4 220/240V L2 L1 White 110/120V 110/120V 120V, 20A 120V, 30A 120V, 15A Receptacle Receptacle Receptacle Stator GFCI Brown White Capacitor White White Wht Wht Wht Auxiliary LINE Phase Rotor Diode Diode White Wht T4 Blue Wht Hour Meter Black T3 120/240V 120/240V Main 20A/30A 20A/30A T1 Windings Red Receptacle Receptacle White Auto-Idle Green T2 Wht T1 T4 T3 T2 Circuit Circuit Circuit Circuit Breaker Breaker Breaker Breaker 20A 45A 45A 20A White White R PORTABLE GASOLINE GENERATORS
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OWNER’S MANUAL ILLUSTRATED 1 2 PARTS LIST Alternator Assembly This list contains replaceable parts used in your generator. When ordering parts, follow the instructions listed under Re- placement Parts on page 23 of this manual. 3 4 5 7 6 12 11 8 9 10 13 15 16 17 14 KEY PART NO. NUMBER DESCRIPTION QTY. 114285-03 Alternator Assembly 1 1 115243-01 Top Cover, Alternator 1 2 M10908-27 Screw, 10-32 x 1/2" 4 3 115244-01 End Cover, Alternator 1 4 115247-01 End Cap, Shaft 1 5 115246-01 Flange Nut, 8mm 1
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E F FUEL nlead d G solin Only SAFETY INFORMATION U e a e R PORTABLE GASOLINE GENERATORS ILLUSTRATED PARTS LIST Fuel Tank and Roll Cage 9 1 3 4 17 2 7 14 6 15 5 16 14 15 14 8 13 16 11 12 11 10 12 15 14 115407 18 120V 120V GFCI 120V TWISTLOCK RESET TEST HOUR METER 120/240V 120/240V ENM TWISTLOCK TWISTLOCK 00000005 HOURS 1/10 AUTO-IDLE OFF ON RESET RESET RESET RESET
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OWNER’S MANUAL ILLUSTRATED PARTS LIST Fuel Tank and Roll Cage This list contains replaceable parts used in your generator. When ordering parts, fol- low the instructions listed under Replace- ment Parts on page 23 of this manual. KEY PART NO. NUMBER DESCRIPTION QTY. 1 25954002 Gas Cap/Fuel Gage 1 2 114720-01 Gas Tank (with 90° fitting) 1 3 114787-01 Screw, 1/4"-28 x 3/4" 4 4 WP-4C Washer, 1/4" 4 5 19508001 Gas Line Clamp 2 6 25985005 Fuel Line 1 7 099743-01 Fuel Filter 1 8 115398-01 Roll Cage 1
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R PORTABLE GASOLINE GENERATORS ILLUSTRATED PARTS LIST Solenoid and Control Board Assemblies and Mounting 2 3 5 4 6 7 Solenoid Assembly and Mounting 1 Control Board Assembly and Mounting 115407 20 DESA T1
