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Briggs & Stratton Vanguard V-Twin Vertical Engine with Electric Start — 570cc, 1in. x 3 5/32in. Shaft, Model# 356777-3034-G1
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Briggs & Stratton Vanguard V-Twin Vertical Engine with Electric Start — 570cc, 1in. x 3 5/32in. Shaft, Model# 356777-3034-G1

Item# 70181

Only $1299.99
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Estimated Delivery: 6 - 11 Business Days
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Manufacturer's Warranty: 36 months parts / 36 months labor

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Product Summary

Briggs & Stratton Vanguard 570cc V-Twin OHV Vertical Engine. This engine uses the V-Twin 90° OHV design to run cooler, cleaner and more efficiently. The design allows for more HP output with less displacement and less carbon build-up. U.S.A.

What's Included

  • (1) Engine, Model# 356777-3034-G1

Features + Benefits

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  • 12 Volt starter and 16 Amp DC alternator

Key Specs

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Item#70181
Ship Weight86.0 lbs
Engine Displacement (cc)570
Start TypeElectric
ApplicationCommercial mower, lawn tractor
Engine TypeVanguard V-Twin OHV
Rated Power (HP)18
Shaft OutputVertical
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.)2
Cylinder BoreCast iron
Bore x Stroke (in.)2.83 x 2.76
Cooling SystemAir cooled
Air Cleaner TypeDual element
Fuel TankNot included
Fuel TypeGasoline
Fuel PumpYes
Oil Capacity (qt.)1.5 (48 oz.)
Lubrication SystemFull pressure
Low Oil AlertYes
Ignition SystemElectronic
Governor SystemMechanical
CarburetorFloat
Throttle ControlRemote
Max. RPM3,300
Charging System Amps16
Muffler IncludedNo
Auto Compression ReleaseNo
Bolt Circle (in.)10
Dimensions L x W x H (in.)16 7/8 x 16 1/16 x 13 1/8
EPA/CARB Approval (California Air Resource Board)Yes

Additional Information

Engine Specs

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Product Question + Answer

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Extended Warranty

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Service Protection Plus

Manufacturer Warranty:
36 months parts / 36 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
Extended Warranty Repair Plan
Only $99.99
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Only $169.99
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Extended Warranty + Accidental Damage Repair Plan
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Briggs & Stratton Vanguard V-Twin Vertical Engine with Electric Start — 570cc, 1in. x 3 5/32in. Shaft, Model# 356777-3034-G1 The price is $1,299.99.
Briggs & Stratton Vanguard V-Twin Vertical Engine with Electric Start — 570cc, 1in. x 3 5/32in. Shaft, Model# 356777-3034-G1
(Not Yet Rated - New)
Item# 70181
Factory Shipped —
Estimated Delivery: 6 - 11 Business Days
Only $1299.99
Hide Similarities
Engine Displacement (cc)
500 500 540 500 570
Start Type
Electric Electric Electric Electric Electric
Application Riding mower, lawn tractor Riding mower, lawn tractor, trail mower Riding mower, lawn tractor Riding mower, lawn tractor Commercial mower, lawn tractor
Engine Type OHV Intek Intek–OHV Intek–OHV Vanguard V-Twin OHV
Rated Power (HP)
17 1/2 - - 17.5 18
Shaft Output
Vertical Vertical Vertical Vertical Vertical
Crankshaft Tapped 7/16-20, Keyway, 1 in. dia. 1 x 3 5/32 Tapped 7/16–20, keyway, 1 in. dia. - -
Shaft Diameter (in.) 1 3 5/32 1 1 1
Shaft Length (in.) 3 5/32 1 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) Counterclockwise CCW 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 Cast iron Cast iron Cast iron
Bore x Stroke (in.)
3.56 x 3.06 3.56 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 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 Tank Capacity (qt.) 17 - - - -
Fuel Pump
No Yes Yes, Pulse Yes, (Pulse) Yes
Fuel Filter Yes Yes Yes - -
Oil Capacity (qt.)
1 1/2 1 1/2 1.5 (48 oz.) 1.5 (48 oz.) 1.5 (48 oz.)
Lubrication System
Splash Splash 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 Choke-A-Matic Manual Manual - -
Max. RPM
3,300 3,300 3,300 3,300 3,300
Charging System Amps 9 9 9 9 16
Muffler Included
Yes Yes Yes Yes No
Flywheel Brake No 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 x 13 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