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PORTABLE GASOLINE
GENERATORS
OWNER'S OPERATION AND INSTALLATION MANUAL
Generator Models: MGR2900A, MGR4500I, and MGR6000I
IMPORTANT: Read and understand this manual before operating or servic-
ing generator. Improper use of generator can cause serious injury. Keep this
manual for future reference.
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Table of Contents
Related Manuals for Master MGR2900A
Summary of Contents for Master MGR2900A
- Page 1 PORTABLE GASOLINE GENERATORS OWNER’S OPERATION AND INSTALLATION MANUAL Generator Models: MGR2900A, MGR4500I, and MGR6000I IMPORTANT: Read and understand this manual before operating or servic- ing generator. Improper use of generator can cause serious injury. Keep this manual for future reference.
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Page 2: Safety Information
PORTABLE GASOLINE GENERATORS SAFETY • Do not use generator in highly con- CAUTION: indicates a hazard which will or ductive areas. These areas include can cause minor personal injury or property INFORMATION metal decking and steelwork. damage if you ignore warning. •... -
Page 3: Product Identification
OWNER’S MANUAL SAFETY PRODUCT INFORMATION IDENTIFICATION Continued 9. Only a qualified electrical service person Gas Tank Gas Cap/Fuel Gauge should service and repair generator. • Generator produces high voltage. Use extreme caution when working on electrical parts. • Always remove spark plug wire from spark plug before servicing. -
Page 4: General Information
VENTILATION DUST, DIRT, RAIN, INFORMATION AND SNOW DANGER: Use only in well- Master portable generators are rugged and vented areas. Make sure area WARNING: Do not use genera- compact. These generators use brushless has plenty of free-moving, fresh, tor outdoors in rain or snow. Do alternators for dependable, trouble-free outside air. -
Page 5: Specifications
OWNER’S MANUAL SPECIFICATIONS MODEL MGR2900A MGR4500I MGR6000I Note: Ratings apply to SAE standard Electrical conditions. Reduce ratings 3 % for Rated Wattage 2500 4500 6000 each 1000 feet above sea level and 1% for each 10° Fahrenheit rise above 60°F. -
Page 6: Generator Features
VOLTAGE SELECTOR GROUND FAULT CIRCUIT SWITCH INTERRUPTER RECEPTACLE FEATURES All models except MGR2900A have a volt- All models have a 120-volt ground fault OIL ALERT SYSTEM age selector switch on the control panel. The circuit interrupter (GFCI) receptacle. The switch has two positions: 120 VOLT ONLY,... -
Page 7: Receptacle Circuit Breaker
OWNER’S MANUAL 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 RECEPTACLE CIRCUIT Gasoline is flammable. -
Page 8: Extension Cords
PORTABLE GASOLINE GENERATORS EXTENSION 5. Drive grounding point into ground. STANDBY Note: Grounding point can be a stake, CORDS INSTALLATION grounding rod, or pipe. Grounding point should be copper or brass. TO HOME OR Only use grounded extension cords. Be sure 6. -
Page 9: Determining Electrical Load For Generator
OWNER’S MANUAL DETERMINING Electric motors present a special prob- Note: Some motors require nearly the lem. They require up to three-times same wattage to run as to start. These ELECTRICAL LOAD their rated wattage to start. Chart 2, be- items include saws, drills, hair dryers, low, shows starting watts for different and food mixers. -
Page 10: Operation
Never run generator inside oc- cupied building. Engine exhaust • 120V, 20-amp duplex receptacle contains poisonous carbon Model MGR2900A uses only the 120V, monoxide gas. Overexposure will cause loss of consciousness and 120V, 15-Amp GFCI Duplex will lead to death. - Page 11 OWNER’S MANUAL OPERATION Start the engine. Turn engine switch to the ON position Continued (see Figure 12). Remove slack from PRESTART starter rope by lightly pulling starter grip. Next, pull starter rope briskly. Operate generator on a firm, dry, and clean IMPORTANT: Do not let starter grip surface.
- Page 12 PORTABLE GASOLINE GENERATORS OPERATION Adjusting the Idle Speed Solenoid Mounting M10 Bolts Bracket (Models MGR4500I and Continued MGR6000I) AUTO-IDLE OPERATION IMPORTANT: Adjust the idle speed only: IMPORTANT: Never start engine with elec- • If the idle speed becomes too high. trical loads connected.
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Page 13: Adding Electrical Loads
(see Figure 19). rect voltage. Running engine at IMPORTANT: (All models except lower speeds will damage genera- MGR2900A) Keep voltage selector switch tor and powered items. in the 120 VOLT ONLY position if only powering 120V items. Only move switch... -
Page 14: Troubleshooting
PORTABLE GASOLINE GENERATORS STORAGE Use a fuel additive, such as STA-BIL or an TECHNICAL ® equivalent, when storing generator with fuel SERVICE in fuel tank. This will minimize fuel gum WARNING: Remove all fuel from deposits from forming in engine. fuel tank before storing generator. -
Page 15: Electrical Component Specifications
‡ Resistance between brown and white leads. † Remove diodes to check resistance. WIRING DIAGRAMS Stator Black Receptacle GFCI Black 120V/15A WHITE Circuit Breaker 110/120V Yellow Rotor Stator White Auxiliary Phase Brown Main Windings Black Yellow Green Figure 20 - Wiring Diagram, Model MGR2900A 118679... - Page 16 PORTABLE GASOLINE GENERATORS WIRING DIAGRAMS Continued Black Black Duplex Grn/ Grn/ Grn/ Green/Yellow Green/ Yellow Black Black Green Black Green/ Blue Yellow Black Green/ Yellow Yellow Yellow Green/Yellow White White To Alternator To Roll Cage To Solenoid Ground Figure 21 - Wiring Diagram, Models MGR4500I and MGR6000I 118679...
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Page 17: Illustrated Parts List
OWNER’S MANUAL ILLUSTRATED PARTS LIST For Model MGR2900A Alternator Assembly This list contains replaceable parts used in your generator. When ordering parts, follow the instructions listed under Replacement Parts on page 23 of this manual. PART PART NUMBER DESCRIPTION QTY. - Page 18 PORTABLE GASOLINE GENERATORS ILLUSTRATED PARTS LIST For Models MGR4500I and MGR6000I Alternator Assembly This list contains replaceable parts used in your generator. When ordering parts, follow the instructions listed under Replacement Parts on page 23 of this manual. PART NUMBER FOR MODEL MGR4500I MGR6000I DESCRIPTION...
- Page 19 OWNER’S MANUAL ILLUSTRATED PARTS LIST For Model MGR2900A Roll Cage This list contains replaceable parts used in your generator. When ordering parts, follow the instructions listed under Replacement Parts on page 23 of this manual. PART NUMBER DESCRIPTION QTY. 114673-01...
- Page 20 PORTABLE GASOLINE GENERATORS ILLUSTRATED PARTS LIST For Models MGR4500I and MGR6000I Fuel Tank and Roll Cage IS T 0 /2 IS T 1/ 10 -I D 118679...
- Page 21 OWNER’S MANUAL ILLUSTRATED This list contains replaceable parts used in your generator. When ordering parts, follow the instructions listed under Replacement Parts on page 23 of this manual. PARTS LIST For Models MGR4500I and MGR6000I Fuel Tank and Roll Cage PART NUMBER FOR MODEL MGR4500I MGR6000I...
- Page 22 PORTABLE GASOLINE GENERATORS ILLUSTRATED PARTS LIST For Models MGR4500I and MGR6000I Control Panel This list contains replaceable parts used in your generator. When ordering parts, follow the instructions listed under Replacement Parts on page 23 of this manual. PART NUMBER FOR MODEL MGR4500I MGR6000I DESCRIPTION...
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Page 23: Replacement Parts And Accessories
For original replacement parts and acces- Each Authorized Service Center is indepen- Master Part Distributors sories, contact your nearest Authorized dently owned and operated. 1251 Mound Avenue NW Dealer or Authorized Service Center for this... -
Page 24: Warranty Information
WARRANTY INFORMATION KEEP THIS WARRANTY Model Serial No. Date Purchased Always specify model and serial numbers when communicating with the factory. We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our standard written warranty.
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