DuroStar DUAL FUEL DS4850EH User Manual
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DuroStar DUAL FUEL DS4850EH User Manual

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*Gasoline & Propane Tank Not Included
DS4850EH GENERATOR
User Manual
REV: DS4850EH-08142018
5800 Ontario Mills Pkwy
Ontario, CA 91764 USA
This manual provides information regarding the operation
www.duromaxpower.com
and maintenance of these products. We have made every
effort to ensure the accuracy of the information in this
Call our Customer Care Team Toll Free 8-5pm PST Mon-Fri
manual. We reserve the right to change this product at
844-387-6629
any time without prior notice.

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Summary of Contents for DuroStar DUAL FUEL DS4850EH

  • Page 1 *Gasoline & Propane Tank Not Included DS4850EH GENERATOR User Manual REV: DS4850EH-08142018 5800 Ontario Mills Pkwy Ontario, CA 91764 USA This manual provides information regarding the operation www.duromaxpower.com and maintenance of these products. We have made every effort to ensure the accuracy of the information in this Call our Customer Care Team Toll Free 8-5pm PST Mon-Fri manual.

  • Page 2: Table Of Contents

    CONTENTS Introduction Introduction ........................6 General Safety Procedures ................... 7 Quick Start Guide (Gasoline) ..................10 Quick Start Guide (Propane) ..................12 Generator Components ....................14 Package Contents ......................16 Generator Setup Shipping Braces ......................18 Wheel Kit Installation ....................19 Adding Oil ........................
  • Page 3 CONTENTS Maintenance and Care Maintenance Schedule ....................40 Maintenance Log ......................41 Checking the Oil ......................42 Changing the Oil ......................43 Cleaning the Air Filter ....................44 Spark Plug Maintenance ....................46 Emptying the Gas Tank ....................48 Cleaning the Fuel Filter Cup ..................50 Storage and Transportation ..................

  • Page 4: Introduction

    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 SAFETY ALERT SYMBOL and go through countless testing in all phases of production.
  • Page 5 GENERAL SAFETY PROCEDURES GENERAL SAFETY PROCEDURES WARNING: This generator may emit highly flammable and explosive gasoline vapors, In addition to the above safety notices, please familiarize yourself with the safety and which can cause severe burns or even death. A nearby open flame can lead to an hazard markings on the generator.

  • Page 6: Quick Start Guide (Gasoline)

    QUICK START GUIDE (GASOLINE) Remove shipping braces Close choke The shipping braces prevent engine movement during The choke lever is located above the air filter to the right shipment. Flip the generator over and remove the brightly of the recoil start. Slide the lever to the left to cut the air colored brace between the motor and the frame, and the supply and allow more gas into the engine to start.

  • Page 7: Quick Start Guide (Propane)

    QUICK START GUIDE (PROPANE) Remove shipping braces Connect propane tank The shipping braces prevent engine movement during The propane hose is located on the left side of the regulator, shipment. Flip the generator over and remove the brightly below the OHV valve cover. Screw the open ACME nut colored brace between the motor and the frame, and the connection to your propane tank and turn the tank on.

  • Page 8: Generator Components

    7. Ground Terminal - Connect a ground wire here to properly ground the generator. 20. Power Boost – DuroStar exclusive Power Boost doubles the amperage available in “120v Only” 8. 120v 3-Prong Receptacle - Use to connect electrical devices that run 120 Volt, 60 Hz, single for heavy loads like RV air conditioners.

  • Page 9: Package Contents

    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 Spanner Spark Plug Wrench Screw Driver Phillips and slot blade Assorted wrenches used in Used in spark plug screwdriver used for generator generator maintenance and...

  • Page 10: Shipping Braces

    GENERATOR SETUP Step 1 - Remove Shipping Braces Step 2 - Wheel Kit Installation (Optional) Unpack Install support legs Remove the generator from the box. Secure the support legs to the frame with provided bolts and lock nuts. Place the largest piece of packing foam on a flat surface. Flip the generator upside down on the pad.

  • Page 11: Adding Oil

    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 WARNING: Gasoline and gas fumes are highly flammable. contains no oil in the crankcase .

  • Page 12: Grounding The Generator

    GENERATOR SETUP (CONTINUED) Step 5 - Grounding the Generator Attach grounding wire Ground the generator by tightening the grounding nut against a grounding wire. 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.

  • Page 13: Checking The Oil

    BEFORE YOU START YOUR GENERATOR Step 1 - Check the oil Step 2 - Check the gas level Check the oil Check Fuel Level The generator is equipped with an automatic shutoff to Before starting the generator, check to see that there is protect it from damage due to low oil.

  • Page 14: Starting The Generator Using Gasoline

    STARTING THE GENERATOR Starting the Generator Using Gasoline Shut breaker off Allow switch return to RUN The breaker is located on the right side of the front power When the engine starts, allow the engine switch to return to panel. Flip the breaker down to prevent accidental load the “RUN”...

  • Page 15: Starting The Generator Using Propane

    STARTING THE GENERATOR (CONTINUED) Starting the Generator Using Propane Turn breaker off Adjust choke The breaker is located on the right side of the front power The choke lever is located above the air filter to the right of panel. Flip the breaker down to prevent accidental load the recoil start.

  • Page 16: Using The Generator

    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.

  • Page 17: Ac Usage

    USING THE GENERATOR Tool or Appliance Rated (Running) Watts Additional Surge Watts AC Usage Electric water heater (40 gal) 4000 Hot plate 2500 ● You may connect electrical devices running on AC current according to their wattage Radial arm saw 2000 2000 requirements.

  • Page 18: Connecting A Load To The Generator

    USING THE GENERATOR (CONTINUED) Voltage Selector Switch Connecting a load to the generator NOTE: Be sure to attach devices to the correct receptacle (outlet). This generator features Power Boost Technology, which gives the user POWER BOOST the ability to double the power in the generator for more heavy duty applications.

  • Page 19: Dc Usage

    USING THE GENERATOR (CONTINUED) DC Usage Connect negative receptacle CAUTION: The DC receptacle is for recharging 12 Volt automotive-type batteries only. Do not connect any other device to this receptacle. Carefully connect the free end of the negative wire to the negative receptacle on the generator.

  • Page 20: Maintenance And Care

    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.

  • Page 21: Maintenance Schedule

    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.

  • Page 22: Checking The Oil

    MAINTENANCE AND CARE (CONTINUED) Checking the oil Changing the oil Check the oil Worn out or dirty oil does not cool the generator properly and can lead to catastrophic engine damage. The generator is equipped with an automatic shutoff to protect it from damage due to low oil.

  • Page 23: Cleaning The Air Filter

    MAINTENANCE AND CARE (CONTINUED) Cleaning the air filter Routine maintenance of the air cleaner helps maintain proper airflow to the carburetor. Check Wash filter element that the air cleaner is free of excessive dirt after every use. Wash the sponge-like elements in household dish detergent and warm water.

  • Page 24: Spark Plug Maintenance

    MAINTENANCE AND CARE (CONTINUED) Spark Plug Maintenance The spark plug is important for proper engine operation. A good spark plug should be intact, Measure plug gap free of deposits, and properly gapped. Measure the plug gap with a gauge. The gap should be 0.7-0.8 mm (0.028-0.031 in).

  • Page 25: Emptying The Gas Tank

    MAINTENANCE AND CARE (CONTINUED) Emptying the Gas Tank Before storing your generator for extended periods of time, you should drain your generator of Drain gas from generator gasoline. With a receptacle underneath the generator to catch the gas, CAUTION: Do not store fuel from one season to another. Gasoline sold at the pump turn the fuel valve to the “ON”...

  • Page 26: Cleaning The Fuel Filter Cup

    MAINTENANCE AND CARE (CONTINUED) Cleaning the fuel filter cup Storage and Transportation Shut fuel valve off CAUTION: Never place any type of storage cover on the generator while it is still hot. Turn the fuel valve to the “OFF” position. When transporting your generator: Empty the gas tank (see “Emptying the Gas Tank”...

  • Page 27: Specifications

    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 DC Amperage 8.3A Dimensions LENGTH 23.2in.
  • Page 28 TROUBLESHOOTING Changing / Inspecting the Carbon Brushes Mode Description The carbon brushes in conjunction with the AVR regulates power from the generator. The Engine Switch is “Off” Set engine switch to “run” carbon brushes are wearable parts and should be inspected every 250 running hours. Fuel Valve is “Closed”...

  • Page 29: Changing / Inspecting The Carbon Brushes

    TROUBLESHOOTING (CONTINUED) Changing / Inspecting the Carbon Brushes (Cont.) Changing / Inspecting the AVR Install new brush 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.
  • Page 30 TROUBLESHOOTING (CONTINUED) Changing / Inspecting the AVR (Continued) Disconnect wires from brush 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. Install new AVR Install the new AVR with the 2 bolts.
  • Page 31 WIRING DIAGRAM...

  • Page 32: Warranty

    30 days. Warranty Limitations DuroMax/DuroStar Power Equipment does not claim or hold any obligation to loss of time, freight ● If you have any questions regarding your warranty coverage, contact us at 844-387-6629 or charges, use of product, or any incidental damages from the use of this product.
  • Page 33 WARRANTY (CONTINUED) Exhaust Emission Warranty Parts List. Hoses, belts, connectors, and assemblies. 1. Any warranted part that is scheduled only for regular inspection in the Owner’s Manual must be Fuel Metering System Evaporative Emission Warranty Part List warranted for the warranty period stated above. A statement in such written instructions to the Carburetor and internal parts (and/or Fuel Tank* effect of “repair or replace as necessary”...
  • Page 34 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...
  • Page 35 5800 Ontario Mills Parkway Ontario, CA 91764 United States 844-387-6629...

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