*Gasoline & Propane Tank Not Included DS4850EH GENERATOR User Manual REV: DS4850EH-08142018 This manual provides information regarding the operation and maintenance of these products. We have made every effort to ensure the accuracy of the information in this manual. We reserve the right to change this product at any time without prior notice. 5800 Ontario Mills Pkwy Ontario, CA 91764 USA www.duromaxpower.
CONTENTS 1. Introduction Introduction ..................................................................................................................... 6 General Safety Procedures ............................................................................................ 7 Quick Start Guide (Gasoline) ....................................................................................... 10 Quick Start Guide (Propane).....................................................................................
CONTENTS 5. Maintenance and Care Maintenance Schedule................................................................................................... 40 Maintenance Log ........................................................................................................... 41 Checking the Oil ............................................................................................................. 42 Changing the Oil..................................................................................
INTRODUCTION GENERAL SAFETY PROCEDURES DuroStar has cemented its reputation as one of the markets leading power equipment companies who are headquartered in the US. All of our products are manufactured to the strictest guidelines and go through countless testing in all phases of production. Evolving our strong engine line, DuroStar has complemented its offerings to include Pressure Washers, Water Pumps, Engines and now offering V-Twin engines.
GENERAL SAFETY PROCEDURES WARNING: This generator may emit highly flammable and explosive gasoline vapors, which can cause severe burns or even death. A nearby open flame can lead to an explosion even if not directly in contact with gas. GENERAL SAFETY PROCEDURES In addition to the above safety notices, please familiarize yourself with the safety and hazard markings on the generator. ●● Do not operate near an open flame. ●● Do not smoke near generator. ●● Always operate on a firm, level surface.
QUICK START GUIDE (GASOLINE) 1. Remove shipping braces The shipping braces prevent engine movement during shipment. Flip the generator over and remove the brightly colored brace between the motor and the frame, and the wood brace under the generator. 2. Add oil The oil fill cap is located on the lower engine block to the right of the recoil start housing. Remove the oil fill cap and fill with 10w30 oil. 3. Add gasoline The fuel cap is located on top of the fuel tank.
QUICK START GUIDE (PROPANE) 1. Remove shipping braces The shipping braces prevent engine movement during shipment. Flip the generator over and remove the brightly colored brace between the motor and the frame, and the wood brace under the generator. 2. Add oil The oil fill cap is located on the lower engine block to the right of the recoil start housing. Remove the oil fill cap and fill with 10w30 oil. 3. Turn breaker off The breaker is located on the right side of the front power panel.
GENERATOR COMPONENTS 15. Fuel Filter Cup 4. Fuel Cap 6. 120/240v 4-Prong Receptacle 10. Volt Meter 2. Choke Lever 3. Fuel Gauge 8. 120v 3-Prong Receptacle 17. Spark Plug 20. Power Boost 5. Circuit Breaker 16. Fuel Valve 18. Muffler 7. Ground Terminal 11. 12v DC Charging Posts 1. Air Cleaner 9. Battery 12. Oil Fill and Dipstick 14. Recoil Start 19. Propane Connector 13. Engine Switch Air Cleaner - a removable, cleanable, oiled, sponge-like element that cleans the air going into the engine. 11.
PACKAGE CONTENTS Your generator comes with the items listed below. Please check to see that all of the following items are included with your generator. Double Sided Screw Driver Phillips and slot blade screwdriver used for generator maintenance. Spanner Spark Plug Wrench Assorted wrenches used in generator maintenance and assembly. Commonly 8mm, 10mm, 13mm, and 15mm. Used in spark plug maintenance, inspection, and installation.
GENERATOR SETUP Step 1 - Remove Shipping Braces 1. Unpack a. Remove the generator from the box. b. Place the largest piece of packing foam on a flat surface. c. Flip the generator upside down on the pad. Step 2 - Wheel Kit Installation (Optional) 1. Install support legs Secure the support legs to the frame with provided bolts and lock nuts. CAUTION: NEVER Attempt this if you have put fuel or oil in the generator. 2. Remove braces 2. Install wheels a.
GENERATOR SETUP (CONTINUED) Step 3 - Adding Oil Step 4 - Adding Gasoline The generator requires engine oil to operate properly. The generator, when new from the package contains no oil in the crankcase*. You must add the proper amount of oil before operating the generator for the first time. This amount is equal to the oil capacity of the engine crankcase: Model Number DS4850EH Engine Oil Capacity 20 fl. oz (0.6L) WARNING: Do not apply engine oils with additives or 2-stroke gasoline engine oils.
GENERATOR SETUP (CONTINUED) Step 5 - Grounding the Generator 1. Attach grounding wire a. Ground the generator by tightening the grounding nut against a grounding wire. b. Connect the other end to a copper or brass grounding rod that’s driven into the earth. A generally acceptable grounding wire is a No. 12 AWG (American Wire Gauge) stranded copper wire. Grounding codes can vary by location. Please contact a local electrician to check the grounding regulations for your area.
BEFORE YOU START YOUR GENERATOR Step 1 - Check the oil Step 2 - Check the gas level 1. Check the oil 1. Check Fuel Level The generator is equipped with an automatic shutoff to protect it from damage due to low oil. Nonetheless, you should check the oil level of the engine before each use to ensure that the engine crankcase has a sufficient amount. Before starting the generator, check to see that there is sufficient gasoline in the fuel tank.
STARTING THE GENERATOR Starting the Generator Using Gasoline 1. Shut breaker off 5. Allow switch return to RUN The breaker is located on the right side of the front power panel. Flip the breaker down to prevent accidental load when starting the generator. When the engine starts, allow the engine switch to return to the “RUN” position. 2. Turn gas valve on 6. Open choke The gas valve is located above the recoil start on the bottom of the fuel tank.
STARTING THE GENERATOR (CONTINUED) Starting the Generator Using Propane 1. Turn breaker off The breaker is located on the right side of the front power panel. Flip the breaker down to prevent accidental load when starting the generator. 28 5. Adjust choke The choke lever is located above the air filter to the right of the recoil start. Slide the lever to the right to open the choke and increase air into the carburetor for normal running. 2. Turn gas valve off 6.
STARTING THE GENERATOR (CONTINUED) Starting the Generator Using Propane WARNING: WHEN USING THE GENERATOR WITH LPG, MAKE SURE THERE IS NO POSSIBLE IGNITION SOURCE CLOSE TO THE GENERATOR. 1. Before using, make sure all of the LPG connectors and hoses are well connected and sealed. 2. Connect electrical devices to generator ONLY after the engine runs smoothly. (There may be remnant gasoline in the carburetor; this can cause unsteady engine performance for several minutes) 3.
USING THE GENERATOR Tool or Appliance AC Usage Rated (Running) Watts Additional Surge Watts Electric water heater (40 gal) 4000 0 Hot plate 2500 0 Radial arm saw 2000 2000 Electric Stove 1500 0 Circular Saw 1500 1500 ●● The rated wattage corresponds to the maximum wattage the generator can output on a continuous basis.
USING THE GENERATOR (CONTINUED) Connecting a load to the generator NOTE: Be sure to attach devices to the correct receptacle (outlet). ●● 120v devices can be directly connected to the 120v ONLY receptacles. ●● 120v devices can be connected to the 120/240v receptacle using an appropriate adapter. ●● 240v devices can ONLY be connected the 240v receptacle. CAUTION: Do not connect 50Hz or 3-phase loads to the generator.
USING THE GENERATOR (CONTINUED) DC Usage CAUTION: The DC receptacle is for recharging 12 Volt automotive-type batteries only. Do not connect any other device to this receptacle. 4. Connect negative receptacle Carefully connect the free end of the negative wire to the negative receptacle on the generator. CAUTION: Never try to jump start a car with your generator. 1.
MAINTENANCE AND CARE Proper maintenance and storage of your generator is essential to ensure trouble free use of your generator when you need it. By following the maintenance and care requirements, you can keep your generator running smooth and efficient for years to come.
MAINTENANCE AND CARE MAINTENANCE LOG Proper routine maintenance of your generator is essential for safe, economical, and trouble-free operation. It will also help reduce air pollution. Date Generator Hours Maintenance Performed WARNING: Improper maintenance, or failure to correct a problem before operation, can cause a malfunction in which you can be seriously injured or killed. Always follow the inspection and maintenance recommendations and schedules in this instruction manual.
MAINTENANCE AND CARE (CONTINUED) Checking the oil Changing the oil 1. Check the oil The generator is equipped with an automatic shutoff to protect it from damage due to low oil. Nonetheless, you should check the oil level of the engine before each use to ensure that the engine crankcase has a sufficient amount. Worn out or dirty oil does not cool the generator properly and can lead to catastrophic engine damage.
MAINTENANCE AND CARE (CONTINUED) Cleaning the air filter Routine maintenance of the air cleaner helps maintain proper airflow to the carburetor. Check that the air cleaner is free of excessive dirt after every use. Note: Improper maintenance may cause less air to enter the engine or dirty air to enter the engine causing overheating and engine wear. 1. Open filter cover Unhinge the clasps at the top and bottom of the air cleaner cover. 44 4.
MAINTENANCE AND CARE (CONTINUED) Spark Plug Maintenance The spark plug is important for proper engine operation. A good spark plug should be intact, free of deposits, and properly gapped. Improper maintenance may cause reduced fuel economy, misfires, trouble starting, or damage to the spark plug threads. 46 4. Measure plug gap Measure the plug gap with a gauge. The gap should be 0.7-0.8 mm (0.028-0.031 in). 1. Remove spark plug cap 5. Clean and re-gap Pull on the spark plug cap to remove it.
MAINTENANCE AND CARE (CONTINUED) Emptying the Gas Tank Before storing your generator for extended periods of time, you should drain your generator of gasoline. CAUTION: Do not store fuel from one season to another. Gasoline sold at the pump today contains additives such as ethanol that even when stored properly may damage the fuel system components. 48 4. Drain gas from generator With a receptacle underneath the generator to catch the gas, turn the fuel valve to the “ON” position.
MAINTENANCE AND CARE (CONTINUED) Cleaning the fuel filter cup 1. Shut fuel valve off Turn the fuel valve to the “OFF” position. Storage and Transportation CAUTION: Never place any type of storage cover on the generator while it is still hot. When transporting your generator: ●● Empty the gas tank (see “Emptying the Gas Tank” in the “Maintenance” section). ●● Disconnect the spark plug. ●● Do not obstruct any ventilation openings & keep the generator in a cool dry area. 2.
SPECIFICATIONS AC Rated Wattage (Gasoline) 3850W AC Rated Wattage (Propane) 3465W AC Surge Wattage (Gasoline) 4850W AC Surge Wattage (Propane) 4365W AC Rated Voltage 120/240V AC Rated Frequency 60 Hz AC Phase Single DC Voltage 12V DC Amperage 8.3A Dimensions LENGTH 23.2in. WIDTH 17in. HEIGHT 17in. Engine Type 4-Stroke OHV Forced-Air Ignition System Non-Contact Transistor Displacement 224cc Starting Type Electric Fuel Tank Capacity 3.96 US Gal. (15L) Oil Capacity 20 fl.
TROUBLESHOOTING Mode Engine will not start Engine runs, but there is no electrical output. Generator runs, but does not support all electrical devices connected.
TROUBLESHOOTING (CONTINUED) Changing / Inspecting the Carbon Brushes (Cont.) 4. Install new brush Changing / Inspecting the AVR The carbon brushes in conjunction with the AVR regulates power from the generator. If the generator is overheated or overloaded, the AVR may be damaged and require replacement. Install new carbon brush with bolt. 5. Connect AVR wires Insert and connect the 2 wires from the AVR, be sure to connect + and – correctly. 1.
TROUBLESHOOTING (CONTINUED) Changing / Inspecting the AVR (Continued) 4. Disconnect wires from brush 8. Replace generator cover Remove the 2 wires from the AVR on the carbon brush. Replace the back cover of the generator and secure with the 2 bolts. 5. Install new AVR Install the new AVR with the 2 bolts. 6. Reconnect wires to brush Reconnect the wire clip. 7. Reconnect the AVR wire clip Insert and connect the 2 wires from the AVR, be sure to connect + and – correctly.
WIRING DIAGRAM 60 61
WARRANTY 3-year Warranty All DuroMax/DuroStar Power Equipment warrant the original purchasers to a 3-year Parts Warranty (Residential Use ONLY: Unusually heavy or commercial use is covered for a period of 1-year) in the event of failure due to defects in electrical or mechanical components. Freight on any items submitted for replacement or repair under the Warranty are the responsibility of the equipment owner. This warranty is non-transferable and only valid to the original purchaser.
WARRANTY (CONTINUED) 1. Any warranted part that is scheduled only for regular inspection in the Owner’s Manual must be warranted for the warranty period stated above. A statement in such written instructions to the effect of “repair or replace as necessary” will not reduce the period of warranty coverage. Any such part repaired or replaced under warranty must be warranted for the remaining warranty period. 2.
CUSTOMER SERVICE DuroStar Power Equipment is comitted to ensuring that our products perform when they need to. Our generators are your lifeline in the event of an emergency. Should you have any problems, please contact our customer service department: DUROSTAR POWER EQUIPMENT 5800 Ontario Mills Parkway Ontario, CA 91764 Customer Service: 844-387-6629 Customer Service Hours: 8-5pm PST Website: www.DuroMaxpower.com Email: customerservice@DuroMaxpower.
5800 Ontario Mills Parkway Ontario, CA 91764 United States 844-387-6629