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Portable Generator Generac 5778
Portable Generator Generac 5778

Gas Portable Generator Generac 5778

Brand: Generac
SKU: 5778
Mfg Number:
  • Watts: 4000 (Rated) / 5000 (Surge)
  • Engine Brand: Generac OHVI
  • Engine Size: 220cc
  • Fuel Tank Capacity: 4.5 Gal.
Availability: Out of Stock
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Product Information
Retail: $1,555.40 Price: $1,333.20
You Save: $222.20 (14.3%)


This compact yet durable generator offers premium quality power, engineered for high performance using the Generac OHVI engine.

Generac Portable Generator 5778 Specifications
ItemPortable Generator
Rated Watts4000
Surge Watts5000
Engine BrandGenerac OHVI
Amps @ 120/240V33.3/16.7
Circuit BreakerProtected
Engine Size220cc
Engine AlternatorBrush
Run Time @ Full Load (Hr./Tank)6.5
Run Time @ 1/2 Load (Hr./Tank)13
Fuel Tank Capacity (Gal.)4.5
Starter TypeRecoil
Air Cleaner TypeStandard
Low Oil Shut DownYes
Length (In.)27-1/2
Width (In.)22
Height (In.)24-1/2
Mounting TypeVibration Dampeners on Engine and Generator
Max. AC Watts20.8
Full Power SwitchYes
Fuel TypeGas
Outlet(2) 120V 20A GFCI Duplex, NEMA 5-20R,(1) 120V 20A Locking Type, NEMA L14-20R
Run Time Hour MeterYes
Bearing TypeMachined Sleeve Bearing With Pressure Lube
Cylinder MaterialCast Iron
IncludesWheel Kit, Handles, Maintenance Kit, First Oil
Warranty (Years)2 Yr Limited Residential, 1 Yr Commercial

Generac Portable Generator 5778 Features:

  • Generac's OHVI Engine: The only engine designed specifically for generator use, providing the reliability needed to run for hours on the job site, and days or even weeks during an outage.
  • Compact and Durable Construction: Oversize full-wrap frame tubing and one of the best power-to-size rations on the market.
  • Comprehensive, User-friendly Control Panel: Includes engine controls (start/stop, fuel shut-off, choke), PowerBar Watt Meter, and LED illumination for easy, convenient operation.
  • Low-Oil Pressure Protection to protect the engine from damage.
  • Circuit Breaker Outlet Protection including dual breakers on 120/240V outlets and GFCI protection on 120V outlets.
  • Maintenance Kit included.
  • Plug-In Battery Charger to keep the battery charged and ready to go is included with electric start models.

Heater-Store or any of it's affiliates are not responsible for damages or injury caused by wrongful installation or application of this product.

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