Close

Close
Close
Briggs & Stratton Intek Vertical OHV Engine with Electric Start — 540cc,  1in. x 3 5/32in. Shaft, Model# 331977-0001-G1
Enlarge 360 Demo

Briggs & Stratton Intek Vertical OHV Engine with Electric Start — 540cc, 1in. x 3 5/32in. Shaft, Model# 331977-0001-G1

Item# 70421
Print Email Share on Facebook Tweet Pin It
Only $579.99

Add to Cart

Item in Cart

In Stock Online
View Shipping Options
Check Store Availability

Manufacturer's Warranty: 24 months parts / 24 months labor

Customer Product Rating
 

Product Summary

Briggs & Stratton 504cc Intek® Vertical OHV Engine with Electric Start delivers top reliability, performance and durablity to meet the demands of professionals.The OHV engine features a pressure lubrication system with an automotive full-flow style spin-on oil filter that cleans contaminants from the oil.

What's Included

  • (1) Engine, Model# 331977-0001-G1

Features + Benefits

Top of page
Features for Briggs & Stratton Intek Vertical OHV Engine with Electric Start — 540cc,  1in. x 3 5/32in. Shaft, Model# 331977-0001-G1
  • Advanced debris management system with dual-sealing cartridge-style air filter for maximum protection and extended engine life
  •  AVS® antivibration system eliminates side-to-side motion of a traditional counter and rotating balance system
  •  Easy-to-use automotive-style dipstick
  • Dura-Bore™ cast iron cylinder sleeve stands up to wear and abuse while providing improved oil control
  • Dura-Lube™ gear-driven splash lubrication system continuously supplies oil to all internal parts
  • Heavy-duty Teflon®-coated bronze sleeve bearing reduces wear and withstands twice the belt load of standard bearings
  • High-capacity panel air cleaner element for greater cleaning capabilities and longer engine life
  •  High-volume cooling fan keeps the engine running cooler
  •  Magnetron® electronic ignition for quick, dependable parts
  •  OHV design for high fuel efficiency and long engine life
  •  Pressure lubrication system with spin-on oil filter for controlled clean oil flow to lower bearings to decrease wear 
  •  Easy-access tool-less air cleaner cover

Key Specs

Top of page
Item#70421
Ship Weight82.0 lbs
Engine Displacement (cc)540
Start TypeElectric
ApplicationRiding mower, lawn tractor
Engine TypeIntek–OHV
Shaft OutputVertical
CrankshaftTapped 7/16–20, keyway, 1 in. dia.
Shaft Diameter (in.)1
Shaft Length (in.)3 5/32
Shaft Keyway (in.)1/4
Shaft End Tapped (Diameter (in.)/Threads per inch)7/16–20
Shaft Rotation (From PTO Shaft Side)Counterclockwise
Bearing TypePlain
Cylinders (qty.)1
Cylinder BoreCast iron
Bore x Stroke (in.)3.70 x 3.06
Cooling SystemAir cooled
Air Cleaner TypeDual element
Fuel TankNot included
Fuel TypeGasoline
Fuel PumpYes, Pulse
Fuel FilterYes
Oil Capacity (qt.)1.5 (48 oz.)
Lubrication SystemFull pressure
Low Oil AlertNo
Low Oil ShutdownNo
Ignition SystemElectronic
Governor SystemMechanical
CarburetorFloat
Throttle ControlRemote
Choke ControlManual
Max. RPM3,300
Charging System Amps9
Muffler IncludedYes
Auto Compression ReleaseYes
Bolt Circle (in.)10
Dimensions L x W x H (in.)19 x 16 1/2 x 13
EPA/CARB Approval (California Air Resource Board)Yes

Additional Information

Engine Specs

Customer Reviews

Top of page

Product Question + Answer

Top of page

Featured Accessories — Hand Picked by our Product Experts

Top of page

Products We Recommend

Fuel Cans

No-Spill Gas Can — 5-Gallon Capacity, Model# 1450 No-Spill Gas Can — 5-Gallon Capacity, Model# 1450
Item# 27125
Temporarily Backordered Online — ships in 2 - 5 Business Days
Only $34.99
Add to Cart

Misc. Accessories

Briggs & Stratton Fuel Filter, Model# 5018H Briggs & Stratton Fuel Filter, Model# 5018H
Item# 705018
In Stock Online
Only $4.99
Add to Cart

Oil Filters

Briggs & Stratton Oil Filter, Model# 5049D Briggs & Stratton Oil Filter, Model# 5049D
Item# 705049
In Stock Online
Only $9.99
Add to Cart

Safety Products

Eye Protection

3M Virtua Protective Eyewear, Model# 11228-00000-100 3M Virtua Protective Eyewear, Model# 11228-00000-100
Item# 547021
In Stock Online
Only $2.99
Add to Cart

Hearing Protection

3M Reusable Corded Earplugs 3M Reusable Corded Earplugs
Item# 174630
In Stock Online
Only $2.29
Add to Cart

Utility Gloves

West Chester Economy Split Cowhide Palm Gloves - Large West Chester Economy Split Cowhide Palm Gloves - Large
Item# 1701B
In Stock Online
Only $1.99
Add to Cart

Extended Warranty

Top of page
Service Protection Plus

Manufacturer Warranty:
24 months parts / 24 months labor

Protect your purchase beyond the manufacturer's warranty
with Service Protection Plus!

DESCRIPTION (Click More Info for details) 1 Year Extension 2 Year Extension
Repair Plan
Only $69.99
More Info
Only $109.99
More Info
Repair Plan with Accidental Damage
Only $99.99
More Info
Only $169.99
More Info
View + Compare All Plans

Compare with Most Popular 391cc - 600cc Briggs & Stratton Vertical Engines

Top of page
See All 391cc - 600cc Briggs & Stratton Vertical Engines
 
 
 
Currently Viewing
 
 
 
(10)
Item# 42552
In Stock Online
Only $529.99
(Not Yet Rated - New)
Item# 44651
In Stock Online
Only $579.99
Briggs & Stratton Intek Vertical OHV Engine with Electric Start — 540cc,  1in. x 3 5/32in. Shaft, Model# 331977-0001-G1 The price is $579.99.
Briggs & Stratton Intek Vertical OHV Engine with Electric Start — 540cc, 1in. x 3 5/32in. Shaft, Model# 331977-0001-G1
(Not Yet Rated - New)
Item# 70421
In Stock Online
Only $579.99
(26)
Item# 701753
Factory Shipped —
Estimated Delivery: 6 - 11 Business Days
Only $899.99
(1)
Item# 70181
Factory Shipped —
Estimated Delivery: 6 - 11 Business Days
Only $1299.99
Hide Similarities
Engine Displacement (cc)
500 540 540 500 570
Start Type
Electric Electric Electric Electric Electric
Application Riding mower, lawn tractor, trail mower Riding mower Riding mower, lawn tractor Riding mower, lawn tractor Commercial mower, lawn tractor
Engine Type Intek Intek OHV Intek–OHV Intek–OHV Vanguard V-Twin OHV
Rated Power (HP)
- - - 17.5 18
Shaft Output
Vertical Vertical Vertical Vertical Vertical
Crankshaft 1 x 3 5/32 1 x 3 5/32 Tapped 7/16–20, keyway, 1 in. dia. - -
Shaft Diameter (in.) 3 5/32 1 1 1 1
Shaft Length (in.) 1 3 5/32 3 5/32 3 5/32 3 5/32
Shaft Keyway (in.)
1/4 1/4 1/4 1/4 1/4
Shaft End Tapped (Diameter (in.)/Threads per inch) 7/16-20 7/16-20 7/16–20 7/16–20 7/16–20
Shaft Rotation (From PTO Shaft Side) CCW Counterclockwise Counterclockwise Counterclockwise Counterclockwise
Gear Reduction No No - - -
Bearing Type
Plain Plain Plain Plain Plain
Cylinders (qty.)
1 1 1 1 2
Cylinder Bore
Cast iron Cast iron sleeve Cast iron Cast iron Cast iron
Bore x Stroke (in.)
3.56 x 3.06 3.70 x 3.06 3.70 x 3.06 3.56 x 3.06 2.83 x 2.76
Compression Ratio 8.5:1 8.5:1 - - -
Cooling System
Air cooled Air cooled Air cooled Air cooled Air cooled
Air Cleaner Type
Dual element Cartridge style dual element Dual element Dual element Dual element
Fuel Tank Not included Not included Not included Not included Not included
Fuel Type Gasoline Gasoline Gasoline Gasoline Gasoline
Fuel Pump
Yes Yes Yes, Pulse Yes, (Pulse) Yes
Fuel Filter Yes Yes Yes - -
Oil Capacity (qt.)
1 1/2 1.5 1.5 (48 oz.) 1.5 (48 oz.) 1.5 (48 oz.)
Lubrication System
Splash Full pressure Full pressure Splash Full pressure
Low Oil Alert
No No No No Yes
Low Oil Shutdown No No No - -
Ignition System
Electronic Electronic Electronic Electronic Electronic
Governor System
Mechanical Mechanical Mechanical Mechanical Mechanical
Carburetor
Float Float Float Float Float
Throttle Control
Remote Remote Remote Remote Remote
Choke Control Manual Manual Manual - -
Max. RPM
3,300 3,600 3,300 3,300 3,300
Charging System Amps 9 9 9 9 16
Muffler Included
Yes Yes Yes Yes No
Flywheel Brake No - - - -
Auto Compression Release
Yes Yes Yes No No
Bolt Circle (in.)
10 10 10 10 10
Dimensions L x W x H (in.)
19 x 16 x 13 19 x 16 1/2 x 16 1/2 19 x 16 1/2 x 13 19 1/2 x 16 1/5 x 12 1/2 16 7/8 x 16 1/16 x 13 1/8
EPA/CARB Approval (California Air Resource Board)
Yes Yes Yes Yes Yes