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Generac · Portable generator · GP3600 COsense 49ST

GP3600 COsense 49ST

GP3600 COsense 49ST delivers up to 3,600 running watts and 4,500 starting watts from a portable gasoline system.

3,600W ratedPortable generatorGasolineListed available
Check Generac price Official listed price $609.00
Portable Generator, 3600W | With COsense | 49ST
Official product image · Generac

Infographic gallery

Output, stored energy, charging, and portability.

01 · Usable output

3,600W rated output

Gasoline3,600W / 4,500W

The comparison uses Generac’s published rated and peak, surge, or maximum output figures.

02 · Energy & runtime

Energy source

Gasoline

Published runtime guidance

9.3 hours at 50% load on the primary listed fuel

03 · Size & construction

105 lb

Listed weight

24 × 22.5 × 21.3 in

Dimensions

Battery or engine
212cc OHV
Warranty
See the official Generac warranty document for this model
04 · Charging & continuity

Charging or integration

Fueling and starting per Generac instructions; manual transfer equipment sold separately

Backup transfer

Not an automatic standby system; approved manual transfer equipment is required for home connection

Noise

No official dBA figure listed on the model page

Official product gallery

Product views and factory feature graphics.

The current official image set for GP3600 COsense 49ST includes product views, connection diagrams, feature explanations, and compatible system configurations where Generac publishes them.

GP3600 COsense 49ST official Generac image 1
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GP3600 COsense 49ST official Generac image 2
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GP3600 COsense 49ST official Generac image 7
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Complete specifications

The complete factory data available for comparison.

These pages retain Generac's model-specific output, charging, battery, port, continuity, dimensions, environmental, engine, fuel, app-control, and warranty fields where published.

Run combustion generators outdoors only. Keep the generator at least 20 feet from occupied buildings with exhaust directed away from doors, windows, and vents.

Comparison summary

Gasoline output
3,600W running / 4,500W starting or surge
Energy source
Gasoline
Dimensions
24 × 22.5 × 21.3 in
Listed weight
105 lb
Price and availability
$609.00 official MSRP; check current availability from Generac

Factory output & connection specifications

Generac model number
G0077211
Gasoline output
3,600W running / 4,500W starting
Fuel Tank Capacity (gal)
3.7
Fuel Tank Capacity (l)
14
Oil Capacity (qt)
0.63
Oil Capacity (l)
0.6
Running Watts (W)
3,600
Starting Watts
4,500
WiFi Factory Installed
No

Factory charging & battery specifications

Battery Included
No

Factory engine, fuel & runtime specifications

Fuel Type
Gaseous
Starting Method
Recoil
Engine Type
OHV
Engine Size (Liters)
212cc
Run Time @@ 50% Load (hr)
9.3

Factory dimensions & operating specifications

Dimensions
24 × 22.5 × 21.3 in
Listed weight
105 lb
Wheel Kit Included
Yes
Length (in)
24
Length (cm)
61
Width (in)
22.5
Width (cm)
57.05
Height (in)
21.3
Height (cm)
54.15
Weight (kg)
47.6
Weight (lb)
105

Additional factory specifications

Base model / SKU
7721_
Official MSRP
$609.00
Extension Cord Included
No
Parallel Capable
No
Transfer Switch Included
No
Non Wi-Fi / NFPA 110 Capable
No
Mobile Link
No
Quiet Test
No

Official feature details

System capability

GP3600 COsense 49ST delivers up to 3,600 running watts and 4,500 starting watts from a portable gasoline system.

Power delivery

3,600-watt Portable Generator With COSENSE® Technology .

Safety and controls

The 3600-watt Generac GP3600 portable generator can be used to tackle home projects, provide power for tools, or deliver essential electricity in the case of an outage.

Runtime and fueling

It is an especially affordable solution with premium features.

Portability detail

These include PowerRush™ Advanced Technology — delivering over 40% more starting capacity* —an OHV engine for longer engine life and a large-capacity steel fuel tank with an incorporated fuel gauge for durability.

Connection options

The hardened steel tube cradle provides added strength, while the low-oil level shutdown protects your engine from damage.

Ownership note

Heavy-duty, never-flat wheels and a foldable handle make for easy transportation of the generator.

Additional manufacturer note

The compact size of the GP3600 ensures it will take up minimal storage space in the garage.

Best-fit uses

  • Home essentials
  • RV and recreation
  • DIY projects
  • Jobsite tools

Standout features

  • 3,600W maximum rated output
  • 4,500W maximum starting or surge output
  • Gasoline
  • Portable generator

Match capacity and output to your actual loads.

Use the independent calculator before choosing a battery system or generator.

Check my power plan
Sources: Generac GP3600 COsense 49STGenerac productsOfficial manualVerified September 15, 2026

Ownership resources

Accessories, manuals, and documents.

Start with the exact Generac GP3600 COsense 49ST model or item number. Accessory families can look alike while using different connectors, electrical limits, engines, or mounting points.

Compatible accessories

Match by model and connection.

Verify exact fit

Generator power cord or inlet connection

Use a correctly rated cord or professionally selected inlet connection for the intended load.

Match voltage, amperage, blade pattern, and wire rating to the generator receptacle. Home connections require approved transfer equipment and qualified installation.
View official accessory options
Verify exact fit

Parallel kit

This model’s published information references parallel operation. Use the manufacturer’s matching kit and pairing rules.

Confirm that the kit explicitly names GP3600 COsense 49ST or its exact generator family before connecting another unit.
View official accessory options
Verify exact fit

Maintenance kit and service parts

Model-matched filters, spark plugs, batteries, oil supplies, and service parts support scheduled maintenance.

Match the complete GP3600 COsense 49ST model or item number and follow the maintenance table in its manual.
View official accessory options
Verify exact fit

Storage cover or approved running shelter

A fitted storage cover protects a cooled, stored generator. A running shelter must be designed for generator operation.

Never run a fuel-burning generator indoors or inside a storage cover. Follow the manual’s clearance and ventilation requirements.
View official accessory options

Manuals & PDFs

Official product materials.

Owner’s or operator’s manualPDFOperating, safety, maintenance, and troubleshooting instructions for GP3600 COsense 49ST.Official product pageProduct pageCurrent manufacturer overview, notices, specifications, downloads, and support links.

Compatibility note: Links lead to manufacturer or official retailer resources. Confirm the full model or item number, connector type, voltage, amperage, and published compatibility list before buying. Installation involving a home panel, inlet, transfer switch, or fuel plumbing should be handled as required by local code.