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Table of Contents
Related Manuals for Benchmark BG Series
Summary of Contents for Benchmark BG Series
- Page 1 BG SERIES...
- Page 2 The engine exhaust from this product contains chemicals known to cause cancer, birth defects or other reproductive harm. ©2020 Benchmark. All Rights Reserved. BG_UG_EN_2020-09-23...
- Page 3 Thanks for choosing the BG Series! You're excited to power up, so we'll keep this brief. Let's get started!
- Page 4 THIS PRODUCT MEETS ALL CERTIFICATION REQUIREMENTS FROM:...
- Page 5 WE'VE GOT YOU COVERED! Do not return product to store. Email us at or contact us by support@midlandpowerinc.com phone at if you have any questions. 1-877-528-3772 SAVE THESE INSTRUCTIONS This user guide contains important instructions for your product, that should be followed during installation and maintenance of the generator.
- Page 6 1-877-528-3772 Warranty support, operation assistance and product support is provided by Midland Power Inc., a licensed manufacturer of Benchmark Generators. Please contact us directly for any warranty service questions. See ‘Limited Warranty’ for more information. Product registration is required for product support and warranty coverage. You can register online at benchmark.midlandpowerinc.com.
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Page 7: Table Of Contents
3.2 Check the Oil Level 3.3 Check the Fuel Level 3.4 Electric Start Battery Connection 4. Using Your Generator 4.1 Starting your Generator 4.2 Using the BG Series with Your Appliances 4.3. Stopping the Engine 5. Folding the Handle 6. Maintenance 6.1 Maintenance Schedule 6.2 Emission Control System... -
Page 8: Safety
1. SAFETY DANGER! Using a generator indoors can kill you in minutes. The engine exhaust from this product contains chemicals known to cause cancer, birth defects or other reproductive harm. 1.1 OPERATOR SAFETY WARNING! Always perform an oil, fuel and air filter check before starting the engine. ... - Page 9 This may result in overheating or stressing the generator components, possibly leading to a generator failure. Electrical devices that require a grounded receptacle pin connection will not function if the receptacle ground pin is not functional. BG SERIES...
- Page 10 1.3 MAINTENANCE SAFETY WARNING! After any maintenance is performed, wash immediately using soap and clean water because repeated exposure to lubricant may cause skin irritation. Do not clean the filter element with flammable liquids like gasoline because an explosion may occur. ...
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Page 11: Learn About Your Generator
BG4650E Fuel Gauge Fuel Tank Choke Lever Gas Cap Handle Remote Pocket Fuel Valve Battery Air Filter Recoil Starter Dipstick Handle BG6250E Gas Cap Fuel Tank Choke Lever BG SERIES Fuel Gauge Handle... -
Page 12: Component Identification
Fuel Valve Battery Air Filter 2.1 COMPONENT IDENTIFICATION Recoil Starter Dipstick Handle BG6250E Gas Cap Fuel Tank Choke Lever Fuel Gauge Handle Remote Fuel Valve Pocket Air Filter Battery Recoil Starter Handle Dipstick BG11,500E Fuel Gauge Choke Lever Fuel Tank Fuel Valve Gas Cap Handle... -
Page 13: Control Panel
2.2 CONTROL PANEL BG SERIES... - Page 15 BG SERIES...
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Page 16: Control Functions
2.3 CONTROL FUNCTIONS AC Circuit Breakers While the generator is running, the breakers should be in the ON position. If the current has exceeded its limits the breaker will automatically pop out to the OFF position. Reduce the electrical load on the generator and push the button back to the ON position. -
Page 17: Make Sure You Have Everything
Handle Handle grip Handle mount bolt Frame mount bolt Frame mount nut Frame mount washer Handle pin Foot Foot pad Foot pad bolt Foot pad nut Frame mount bolt Frame mount nut Wheel Short axle Washer Cotter pin BG SERIES... -
Page 18: Assembly Instructions
2.5 ASSEMBLY INSTRUCTIONS Setup of your BG generator is designed to get you up and running as quickly as possible. If equipped with your generator, install the wheel, handle, and feet kits, then continue on to chapter 3. Install the wheels, foot, and handle as shown below. Note ... - Page 19 BG SERIES...
- Page 21 BG SERIES...
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Page 22: Pre-Operation Check
10W-30 3. PRE-OPERATION CHECK 5W-30 These quick checks should be done each time the generator is started to ensure you 0°C °C get the most out of your generator. 32°F °F Set the generator on a level surface and the power switch to OFF. WARNING! Exhaust gas contains poisonous carbon monoxide. - Page 23 Undo the clips and remove the air filter cover. Remove the air filter elements and inspect for cleanliness. Clean the air filter with soap and water or solvent and let dry. Soak in clean engine oil. Squeeze out all excess oil and reinstall. Replace the filter if it is damaged. BG SERIES...
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Page 24: Check The Oil Level
NOTE Running the engine without the air filter will quickly degrade the engine Always inspect air filter before using the generator. Check and clean the air filter according to the maintenance schedule. 3.2 CHECK THE OIL LEVEL Maximum Oil Level Minimum Oil Level Ensure the generator is on a level surface. - Page 25 To avoid the inconvenience of unexpected engine shutoff, check the engine oil level as often as possible. Use 4-stroke engine oil, certified to meet or exceed API standard SG, SF, SAE ratings Air Filter Air Filter Cover Knob BG SERIES...
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Page 26: Check The Fuel Level
3.3 CHECK THE FUEL LEVEL WARNING! Gasoline is highly flammable and explosive under certain conditions. Refuel in a well-ventilated area with the engine stopped. Do not smoke or allow open flames or sparks in the area where the generator is being refueled or where gasoline is stored. -
Page 27: Electric Start Battery Connection
Do not reverse the polarity of the terminals when charging the battery. Serious damage to the generator and/or battery may occur. Do not attempt to connect the battery while the generator engine is running. Disconnect the cables from the battery while the generator is in storage. BG SERIES... -
Page 28: Using Your Generator
4. USING YOUR GENERATOR Using a generator indoors can KILL YOU IN MINUTES. Generator exhaust contains carbon monoxide. This is poison that you cannot see or smell. NEVER use inside a home Only use OUTSIDE and or garage. EVEN if doors far away from windows, and windows are open. - Page 29 In this case the carburetor needs to be returned to its original specifications. Generator output power should be modified according to the altitude and ambient temperature. See more details on the correction factors in Chapter 11 - Appendix. BG SERIES...
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Page 30: Starting Your Generator
4.1 STARTING YOUR GENERATOR START WARNING! Before using the generator, a ground wire may need to be connected to OPEN the ground terminal. The terminal is located on the front panel. Before using the ground terminal consult a qualified electrician. Note ... - Page 31 Press and hold the START button for 1 second, or until the generator fires, then release it. When the engine warms up push the choke to the RUN/OPEN position. Connect the devices to the front panel. Empty Full BG SERIES...
- Page 32 4.1.3 MANUAL RECOIL START START OPEN Rotate the fuel valve to the OPEN position. If the engine is cold push the choke lever to the START/CLOSED position. The choke is used to provide the proper air-fuel mixture when the engine is cold. You can find the choke lever behind the air filter on the back side of your generator.
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Page 33: Using The Bg Series With Your Appliances
4.2 USING THE BG SERIES WITH YOUR APPLIANCES After starting the BG Series you can connect your devices to it. Before starting make sure you know what you can power with your generator. Here’s how you can decide: Add the watt ratings of all the loads that the generator set will be powering at the same time. -
Page 34: Stopping The Engine
4.3. STOPPING THE ENGINE Normal Operation CLOSED Switch off the connected electrical appliances, and disconnect them from the generator. Turn the power switch to the OFF position. Turn the fuel valve to the CLOSED position. Emergency (All Models) To stop the engine in an emergency, turn the power switch OFF immediately. Note ... -
Page 35: Folding The Handle
5. FOLDING THE HANDLE The handle folds down for compact storage and locks up into position for easy maneuvering. Pull up the handle into the upright position. Insert the locking pin on both sides. BG SERIES... -
Page 36: Maintenance
6. MAINTENANCE Proper maintenance keeps your generator in the best operating condition by ensuring safe, economical and trouble-free operation. Only use genuine parts and recommended fluids to replace the worn components. Improper maintenance may cause the generator to malfunction and can lead to serious injury. Contact customer support if you have any maintenance questions. -
Page 37: Maintenance Schedule
Fuel Tank and Cleaning • Strainer Fuel Line Cleaning Every two months (replace if necessary) Exposed Lubricate with oil After every use and especially before storage Metal Parts * Every 100 hours or every year, whichever comes first. BG SERIES... -
Page 38: Emission Control System
6.2 EMISSION CONTROL SYSTEM Emission Source Exhaust gas contains carbon monoxide, nitrogen oxides (NOx) and hydrocarbons. It is very important to control the emissions of NOx and hydrocarbons as they are a major contributor to air pollution. Carbon monoxide is a poisonous gas. The emission of fuel vapors is a source of pollution as well. -
Page 39: Changing The Oil
Drain the oil rapidly and completely on a level surface while the engine is still warm. Oil Drain Pan Oil Drain Bolt Stop the engine and remove oil filler cap. Place a pan under the engine. Remove the oil drain bolt and allow the oil to completely drain into the pan. BG SERIES... - Page 40 Reinstall drain bolt before filling the engine with fresh oil up to the maximum mark on the dipstick. Do not overfill oil reservoir. Use a funnel to prevent spillage. Reinstall the oil filler cap and tightly fasten. Note Oil capacities: BG4650E (600mL), BG6250E (700mL), BG11500E (1.1L) ...
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Page 41: Cleaning The Air-Filter
Loosen the knob and remove the air filter cover. Remove the air filter element and inspect for cleanliness. Clean the air filter with soap and water or solvent and let dry. Soak in clean engine oil. Squeeze out all excess oil and reinstall. Replace the filter if it is damaged. BG SERIES... - Page 42 BG6250E BG6250E Clasp Clasp Air Filter Air Filter Clasp Clasp Air Filter Cover Air Filter Cover Loosen the clasp and remove the air filter cover. Remove the air filter element and inspect for cleanliness. Replace the filter if it is damaged. BG11,500E BG11,500E Clip...
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Page 43: Spark Plug Service
8. 7. 1•••• R emove•• t he•• f ue BG SERIES 8. 7. 2•••• C lea n•• t he•• f ilter e off the s pa rk a rres ter from the muffle the s pa rk a rres ter from the muffle 8. -
Page 44: Spark Arrester Maintenance
6.6 SPARK ARRESTER MAINTENANCE Spark Arrester After the engine has cooled down remove the spark arrester from the muffler by loosening the screw. Use a brush to remove carbon deposits from the spark arrester. If the spark arrester is worn down, replace it. Reinstall the spark arrester. -
Page 45: Battery Charger
A fully charged battery will read 12.6-12.7 Volts. To top up, plug the charger into a standard 120V wall outlet and the charging port on your BG series (do not charge longer than 10 hours at a time). This will slowly recharge the battery and prolong its life. - Page 46 6.9 HOW TO SYNC A NEW REMOTE (REMOTE PAIRING) A new remote can be synced following the steps below. With the battery connected, turn the power switch to the ON position and wait for the Remote Start Ready light to illuminate. Initiate Remote Sync mode on the generator by pressing and holding the Remote Sync button behind the right side of the control panel until the Remote Sync light illuminates then let go.
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Page 47: Transportation & Storage
Drain the generator of fuel and oil before being transported on rough roads. Draining the Fuel Tank Siphon Turn OFF the engine. Remove the fuel cap and the debris screen underneath the fuel cap. Empty the fuel tank using a siphon and an approved gasoline container. BG SERIES... - Page 48 Draining the Carburetor Carburetor Drain Screw Container Turn OFF the engine and allow it to cool. Turn the fuel valve to OPEN. Position a container under the carburetor drain screw. Loosen the drain screw. Allow fuel to completely drain and re-tighten the drain screw. Turn the fuel valve to CLOSED.
- Page 49 Pull the starter grip slowly until you feel resistance. At this point, the piston is coming up on its compression stroke and both the intake and exhaust valves are closed. This position helps to protect the engine from internal corrosion. BG SERIES...
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Page 50: Troubleshooting
8. TROUBLESHOOTING If appliances do not operate: Is the output indicator light ON? Is the overload indicator light ON? Contact an authorized dealer Check the electrical Contact an authorized appliance for any fault dealer Stop the engine and then replace or repair the appliance Restart the engine DC receptacle without any electricity:... - Page 51 Is there enough oil in the engine? Add the recommended oil. Is the spark plug in Clean, readjust the gap and dry the good condition? spark plug. Replace if necessary. If the engine still does not start, contact an authorized dealer BG SERIES...
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Page 52: Technical Specifications
9. TECHNICAL SPECIFICATIONS BG4650E BG6250E BG11500E Rated frequency (Hz) 60Hz 60Hz 60Hz Max AC Output Power (W) 4650W 6250W 11500W Running AC Output Power 3600W 5000W 9000W AC Voltage (V) 120V 120/240V 120/240V Power Factor 7.0 HP, Single Cylinder, 9.0 HP, Single Cylinder, 15.0 HP, Single Cylinder, Type forced air cooling,... -
Page 53: Wiring Diagram
10. WIRING DIAGRAM BG4650E BG SERIES... - Page 54 WIRING DIAGRAM BG6250E...
- Page 55 WIRING DIAGRAM BG11,500E BG SERIES...
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Page 56: Appendix
11. APPENDIX The standard condition of rated power output: Altitude: 0m Ambient temperature: 25°C Relative humidity: 30% Factor of Environment Correction: Altitude (m) Ambient Temperature°C 0.98 0.96 0.93 0.90 0.93 0.91 0.89 0.87 0.84 1000 0.87 0.85 0.82 0.80 0.78 2000 0.75 0.73... -
Page 57: Limited Warranty
12. LIMITED WARRANTY E-mail: support@midlandpowerinc.com Toll Free: 1-877-528-3772 Benchmark products are distributed and supported by: Midland Power Inc. 376 Magnetic Drive, Toronto, ON M3J 2C4, Canada This product is warranted to be free of defects in material and workmanship for five (5) years from date of purchase. - Page 58 THE FOREGOING LIMITED WARRANTY IS EXCLUSIVE OF AND IN LIEU OF ALL OTHER WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND OF ANY OTHER WARRANTY WHETHER EXPRESS OR IMPLIED. Consumable parts, such as oil or fuel filters, fuel cut off valve, brushes, fuel injection nozzle valve, lubricant, or ignition plug, are not covered under this warranty.
- Page 59 Your emission control system may include such parts as the carburetor or fuel injection system, the ignition system, and catalytic converter. Also included may be hoses, connectors, and other emission-related assemblies. BG SERIES...
- Page 60 Emission Control System Warranty Parts: This list applies to parts supplied by Midland Power Inc. and does not cover parts supplied by the equipment manufacturer. Please see the original equipment manufacturer’s emissions warranty for non-Midland Power Inc. parts. Consumable parts are covered up to a maximum of 30 days. SYSTEMS COVERED PARTS IN WARRANTY...
- Page 61 Product Registration Instructions Product registration is required for product support and warranty coverage. You can register online at benchmark.midlandpowerinc.com. Once your registration is complete, your receipt will be on file and any future warranty claims will be easily created. If you wish, you can confirm your registration by e-mail at support@ midlandpowerinc.com...
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Questions and answers
Where do you get warranty service on a 2 year old BG 4650 generator. Purchased at Home Hardwae
Warranty service for a 2-year-old Benchmark BG 4650 generator purchased at Home Hardware must be obtained through an authorized service dealer, not the store where it was purchased. Contact Midland Power Inc. for warranty service by email at support@midlandpowerinc.com or by phone at 1-877-528-3772.
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Re BG6250E generator running. Extension chord plugged in but no power.
The Benchmark BG6250E generator may not be providing power when an extension cord is plugged in due to several possible reasons:
1. Faulty Extension Cord or Device – A damaged cord or connected device may prevent power flow. Check for visible damage and try a different cord or device.
2. Generator Overload – If the combined load exceeds the rated running wattage, the generator may not function properly. Reduce the connected load.
3. Improper Connection – Ensure the extension cord is properly plugged into the generator’s outlet.
4. Generator Malfunction – If the generator operates abnormally, turn it off, disconnect the load, and inspect for issues.
5. Electrical Issue or Breaker Trip – If the generator has a circuit breaker, check if it has tripped and reset it if necessary.
6. Neutral Bonding Configuration – The BG6250E has a neutral bonded to the frame. If a grounding issue exists, it may affect power delivery. Ensure proper grounding.
If these steps do not resolve the issue, further troubleshooting or professional inspection may be required.
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