Generac GP6500 COsense, 76723
We will not recommend this unit
Manufacturer variant/serial identity must be resolved against recall information before recommendation or commerce.
This unit appears in our research pages but is never ranked in a planner result and carries no buy link. If you already own one, read the model and serial number from the unit label and check the manufacturer’s recall lookup and the CPSC recall search before using it.
The Generac GP6500 COsense, 76723 makes 6,500 W running, and starts motors that need up to 8,125 W. It runs about 11.5 hours at half load on a 7.9-gallon tank of gasoline (maker figure).
Outdoors only, far from doors, windows and vents: the exhaust carries carbon monoxide. It has 240-volt output, so it can feed a well pump through a transfer switch.
The numbers behind that
This generator makes up to 6,500 watts and can start motors that briefly need 8,125 watts. It runs on gasoline. At half load it runs about 11.5 hours on a tank.
It supplies both 120 and 240 volts, so it can run a well pump or other 240-volt equipment through proper transfer equipment. Of the 16 household loads we track, it can handle 0.
It must run outside. The exhaust contains carbon monoxide, which you cannot smell and which kills.
Outdoor use only
This generator burns fuel and produces carbon monoxide. Run it outdoors only, well away from doors, windows and vents, with the exhaust pointed away from the building. Fit working CO alarms indoors. COsense technology; follow manufacturer outdoor-use instructions
Recall screen
Unresolved — this model family appears in a recall and needs a serial-number lookup
CPSC 21-173, 23-040 and 26-407 name the GP6500 unit type within listed model numbers and serial ranges; the corpus identifier 76723 is not one of the listed model numbers, so it cannot settle the match.
This check cannot clear your own unit. Most recalls cover only certain serial numbers. Read the model and serial number off the label on the unit itself, then check the maker's recall page before you use it, sell it, or buy it.
Output
Sustained output. This is what the generator can hold indefinitely.
- Continuous output
- 6,500W
- Starting / surge
- 8,125W
- Output voltage
- 120/240V
Supplies 240V, so it can run a well pump or other 240V load — through correctly installed transfer equipment, never a cord into an outlet. - Starting method
- Recoil
- Weight
- 172 lb
Fuel and runtime
| Fuel | Running | Starting | Tank | Runtime at 50% load |
|---|---|---|---|---|
| Gasoline | 6,500W | 8,125W | 7.9 gal | 11.5h |
Runtime is quoted at half load. Your actual runtime falls as load rises, and refuelling a hot generator is itself a burn and fire hazard — let it cool first.
Outlets
- covered outlets; exact receptacle mix pending manual extraction
Outlet configuration decides what you can plug in directly. Powering house circuits instead of appliances requires a transfer switch or inlet installed by a licensed electrician.
Safety boundary
- Outdoor only. Carbon monoxide from this unit is lethal and undetectable by smell.
- Backfeeding is prohibited. Never run a cord from this generator into a wall outlet. It can kill line workers restoring your power.
- Any connection to building wiring requires a licensed electrician and, in most places, a permit and inspection.
- Store fuel safely and away from the running unit. Let the engine cool before refuelling.
Source
Generac product page for the GP6500 COsense, 76723
manufacturer product specifications · captured 2026-08-11 · Manufacturer documented