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Master Lock MGH4000C - page 1
POR T ABLE GASOLINE GENER A T OR S OWNER’S OPERA TION AND INST ALLA TION MANUAL R 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. Generator Models: HWI3000, MGH3000, MGH3000P R, MGH4000C , MGH4000C I, MGH5000C , MGH 50 00 ...
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Master Lock MGH4000C - page 2
2 105420 POR T ABLE GASOLINE GENERA TORS R 1. Gasoline presents a hazard of fire or e x- plosion. Gasoline is flammable. Its va- por is explosi ve. •K eep fuel out of children’ s reach. • Refuel generator in a well-vented area. Do not fill fuel tank in the dark. Do not refuel while engine is run- ning. Unhook all electrical loads and shut of ...
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Master Lock MGH4000C - page 3
3 105420 OWNER’S MANUAL F U E L F FUEL F 120 ONLY 120 240V R E S E T T E S T 1 2 0 V O L T S 120/240 VOLTS RESET RESET E N M 0 0 0 0 0 0 0 5 H O U RS 1/10 F U L L P O W E R 9. Only a qualified electrical service per - son should service and repair generator . • Generator produces high voltage. Use extreme caution when working on electrical part ...
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Master Lock MGH4000C - page 4
4 105420 POR T ABLE GASOLINE GENERA TORS R VENTILA TION DUST , DIRT , RAIN, AND SNOW HIGH AND LOW TEMPERA TURE OPERA TION Air temperature affects generator output. Output drops 1% for each 10 ° temperature rise above 60 ° F. Very low temperatures may make the engine hard to start. See engine owner’s manual for more information. GENERAL INFORMA ...
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Master Lock MGH4000C - page 5
5 105420 OWNER’S MANUAL SPECIFICA TIONS MGH5000C MGH4000C MGH5000CI MGH6000C MGH7000C MODEL HWI3000 MGH3000 MGH3000PR MGH4000CI MGH5000CIE MGH6000CI MGH7000CI MGH10000 Electrical Rated Wattage 2500 2500 2500 4000 5000 6000 7000 10,000 Rated Amperage 120 V 20.8 20.8 20.8 33.3 41.7 50 57 83.3 240 V –– –– –– 16.7 20.8 25 28.3 41.7 Recept ...
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Master Lock MGH4000C - page 6
6 105420 POR T ABLE GASOLINE GENERA TORS R 120/240 VOLT Position 120 VOLT ONLY Position Figure 3 - Full Power Selector Switch GENERA TOR FEA TURES OIL ALERT SYSTEM The oil alert system protects the engine from low oil damage. This system automatically shuts down the engine and prevents engine restarting if the oil level falls too low. Note: When th ...
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Master Lock MGH4000C - page 7
7 105420 OWNER’S MANUAL ENGINE CIRCUIT BREAKER (Models MGH5000CIE, MGH7000C, MGH7000CI, and MGH10000) This circuit breaker, or fuse, protects the battery charging circuit. A short circuit will trip the circuit breaker. The circuit breaker will also trip if you install battery wrong. Push circuit breaker button to reset. On Model MGH10000, the fus ...
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Master Lock MGH4000C - page 8
8 105420 POR T ABLE GASOLINE GENERA TORS R F U E L F Figure 10 - Battery Hold-Down System (Model MGH7000C Shown) 1 2 0 O N L Y 1 2 0 2 4 0 V E N M 0 0 0 0 0 0 0 5 H O U R S 1 / 1 0 F U L L P O W E R Battery Mounting Bracket Battery Hook Bolt Nut Figure 11 - Battery Hold-Down System (Model MGH10000 Shown) Battery Mounting Bracket IMPORTANT: Make sur ...
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Master Lock MGH4000C - page 9
9 105420 OWNER’S MANUAL Ampere AWG for Length of Load Cord in Feet 50' 100' 150' 21 8 1 8 1 8 31 8 1 8 1 8 41 6 1 6 1 6 51 6 1 6 1 6 61 6 1 6 1 4 81 6 1 4 1 2 10 16 14 12 12 14 14 12 14 14 12 10 16 12 12 10 20 10 10 8 FUEL F TO STARTER SOLENOID TO ENGINE BLOCK 120 O NLY 120 240V EN M 00000005 H OU R S 1/ 10 FU LL PO WER Figure 12 - ...
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Master Lock MGH4000C - page 10
10 105420 POR T ABLE GASOLINE GENERA TORS R OPERA TION GENERAL INFORMATION This generator is not large enough to power your entire home. Do not connect generator to any existing electrical circuits. Plug items directly into generator receptacles. Do not exceed amperage rating of receptacles. Only use grounded cords. Running Starting Equipment Watts ...
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Master Lock MGH4000C - page 11
11 105420 OWNER’S MANUAL RESET 240 VO LTS R ESET RESET RESET RESET TEST 120 VOLTS R E SE T R ES ET E N M 0 0 0 0 0 0 0 5 H O U R S 1 /1 0 120 ONLY 120 240V Figure 15 - Receptacle Locations 120V, 15-Amp GFCI Duplex 120/240V, 20 or 30-Amp Twist-Lock 120V, 30-Amp Twist-Lock 120V, 15-Amp Duplex 120/240V, 50-Amp (Model MGH10000 only) POWER CORD AND PL ...
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Master Lock MGH4000C - page 12
12 105420 POR T ABLE GASOLINE GENERA TORS R Choke Lever (Open Position) Figure 23 - Choke Lever Opened (Model MGH7000C Shown) HIGH ALTITUDE OPERATION This generator will not perform well at high altitudes without proper adjustment. See engine owner’s manual for details. ADDING ELECTRICAL LOADS IMPORTANT: Do not overload generator. Make sure total ...
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Master Lock MGH4000C - page 13
13 105420 OWNER’S MANUAL OPERA TION Continued Figure 25 - Fuel Valve Lever Off (Model MGH7000C Shown) Fuel Valve Lever (Off Position) 1. Check items to be po wered. Their nameplate lists their wattage ratings. Note: The wattage ratings for some electrical motors are misleading. The y may require up to three-times their rated wattage to start. Y o ...
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Master Lock MGH4000C - page 14
14 105420 POR T ABLE GASOLINE GENERA TORS R WARNING: Only a qualified electrical service person should service and repair generator. Use only factory approved replacement parts. POSSIBLE CAUSE 1. Defecti ve capacitor 2. W inding short circuit or loose connections 3. Defective rotor diode 4. Loss of residual magnetism 1. Engine speed too low 2. Defe ...
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Master Lock MGH4000C - page 15
15 105420 OWNER’S MANUAL WIRING DIAGRAMS Figure 26 - Wiring Diagram, Models HWI3000, MGH3000, and MGH3000PR Circuit Breaker 25A 120/240V 20A Receptacle T4 120V, 15A Receptacle 120V, 30A Receptacle White White Green Black Red Black Red Black White T3 Red Green Stator 110/120V T1 T2 T3 T4 L2 L1 110/120V 220/240V Rotor Stator White Brown Auxiliary P ...
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Master Lock MGH4000C - page 16
16 105420 POR T ABLE GASOLINE GENERA TORS R 120/240V 30A Receptacle T4 120V, 15A Receptacle Circuit Breaker 20A Green Black Black Black Red Black T3 White Green Red T1 T2 White White Circuit Breaker 30A Circuit Breaker 30A Black Red Yellow Green/Yellow Stator 110/120V T1 T2 T3 T4 L2 L1 110/120V 220/240V T2 Green Red Black Yellow Main Windings T1 T3 ...
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Master Lock MGH4000C - page 17
17 105420 OWNER’S MANUAL PA R TS CENTRALS These Parts Centrals are privately owned businesses. They have agreed to support our customer’s needs by providing original re- placement parts and accessories. Tool & Equipment 5 Manila Drive Hamden, CT 06514-0322 203-248-7553 1-800-397-7553 Grainger Parts Operations 1657 Shermer Road Northbrook, I ...
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Master Lock MGH4000C - page 18
18 105420 POR T ABLE GASOLINE GENERA TORS R This list contains replaceable parts used in your generator. When ordering parts, fol- low the instructions listed under Replace- ment Parts on page 17 of this manual. ILLUSTRA TED PA R TS LIST For Models HWI3000, MGH3000, and MGH3000PR Alternator Assembly † Includes fastening hardware. * Includes refer ...
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Master Lock MGH4000C - page 19
19 105420 OWNER’S MANUAL PART NUMBER FOR MODEL MGH5000C KEY MGH4000C MGH5000CI MGH6000C MGH7000C NO. MGH4000CI MGH5000CIE MGH6000CI MGH7000CI DESCRIPTION QTY. 099723-01 099723-02 099723-03 099723-04 Alternator Assembly 1 1 099844-01 099844-01 099844-01 099844-01 End Cover 1 2 099701-01 099701-01 099701-01 099701-01 Screw, M5 x 13 6 3 099760-01 09 ...
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Master Lock MGH4000C - page 20
20 105420 POR T ABLE GASOLINE GENERA TORS R 1 5 16 14 24 10 26 18 19 6 2 11 12 9 3 7 4 22 23 25 17 21 8 20 15 13 ILLUSTRA TED PA R TS LIST For Model MGH10000 Alternator Assembly This list contains replaceable parts used in your generator. When ordering parts, follow the instructions listed under Replacement Parts on page 17 of this manual. * Part n ...
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Master Lock MGH4000C - page 21
21 105420 OWNER’S MANUAL ILLUSTRA TED PA R TS LIST For Models HWI3000, MGH3000, and MGH3000PR Roll Cage This list contains replaceable parts used in your generator. When ordering parts, follow the instructions listed under Replacement Parts on page 17 of this manual. 1 2 3 4 5 3 4 3 4 5 3 4 3 6 6 7 9 3 3 3 7 4 4 3 4 5 8 KEY PART NO. NUMBER DESCRI ...
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Master Lock MGH4000C - page 22
22 105420 POR T ABLE GASOLINE GENERA TORS R 9 10 11 12 13 11 16 13 13 17 17 18 11 11 11 16 11 16 21 20 19 14 23 14 23 23 16 16 16 16 10 11 16 11 16 22 F U E L F 1 3 2 4 24 7 8 6 6 27 7 25 15 5 26 ILLUSTRA TED PA R TS LIST For Models MGH4000C, MGH4000CI, MGH5000C, MGH5000CI, MGH5000CIE, MGH6000C, MGH6000CI, MGH7000C, and MGH7000CÎ Fuel Tank and Rol ...
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Master Lock MGH4000C - page 23
23 105420 OWNER’S MANUAL KEY PART NO. NUMBER DESCRIPTION QTY. 1 25954000 Gas Cap/Fuel Gage 1 2 099832-01 Gas Tank (with 90 ° fitting) 1 3 25978000 Breather Assembly 1 4 M51043-01 Screw, 1/4-20 x 1" 4 5 099701-01 Screw, M5 x 10 1 6 19508001 Gas Line Clamp 2 7 25985005 Fuel Line 1 8 099743-01 Fuel Filter 1 9 099752-01 Roll Cage† 1 099752-02 ...
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Master Lock MGH4000C - page 24
24 105420 POR T ABLE GASOLINE GENERA TORS R 9 10 12 15 33 11 17 13 24 24 18 11 24 5 11 20 11 19 16 14 23 36 35 34 21 25 24 13 27 22 FU EL F 1 3 2 4 26 6 37 7 11 32 25 24 34 11 25 24 8 29 30 31 28 24 11 24 ILLUSTRA TED PA R TS LIST For Model MGH10000 Fuel Tank and Roll Cage ...
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Master Lock MGH4000C - page 25
25 105420 OWNER’S MANUAL ILLUSTRA TED PA R TS LIST For Model MGH10000 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 17 of this manual. KEY PART NO. DESCRIPTION NUMBER QTY. 1 Gas Cap/Fuel Gage 25954000 1 2 Gas T ank (with ...
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Master Lock MGH4000C - page 26
26 105420 POR T ABLE GASOLINE GENERA TORS R PART NUMBER FOR MODEL MGH5000C KEY MGH4000C MGH5000CI MGH6000C MGH7000C NO. MGH4000CI MGH5000CIE MGH6000CI MGH7000CI DESCRIPTION QTY. 1 103349-01 103349-02 103349-03 103349-04 Control Panel 1 2 22616009 22616009 22616009 22616009 Circuit Breaker, 20 Amp * 2 3 099833-01 099833-01 099833-01 099833-01 120V, ...
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Master Lock MGH4000C - page 27
27 105420 OWNER’S MANUAL † Includes reference numbers 1 through 16 ∆ Not shown KEY PART NO. DESCRIPTION NUMBER QTY. 1 Control Panel 103182-01 1 2 20 Amp Circuit Breaker 22616009 2 3 120V , 30A T wist-Lock Receptacle 099833-01 1 4 #8-18 x 1/2" Sems Screw 100410-01 16 5 U-Nut 22261000 20 6 120V , 15A Duplex (GFCI) Receptacle 100445-01 1 7 ...
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Master Lock MGH4000C - page 28
KEEP THIS WARRANTY W ARRANTY INFORMA TION FIVE-YEAR LIMITED WARRANTY GASOLINE PORTABLE GENERATORS DESA Power Tools™ warrants each alternator, generator, or electric product of its manufacture, to be free from defects in material and workmanship for five years from the date of first purchase from an authorized dealer, provided that the product ha ...
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