The shaft would have a tapped end that is 3/8" diameter with 24 threads per inch. (3/8-24).
Briggs & Stratton V-Twin Vanguard Engine with Electric Start — 570cc, 18 HP, 1in. x 3in. Shaft, Model# 356447-0080-G1
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- 570cc engine displacement and 18 HP net power output delivers the power you need
- Advanced Debris Management
- Dura-Bore cast iron cylinder sleeve offers improved heat transfer and exceptional durability
- Full pressure lubrication system with spin-on oil filter and oil cooler for smooth operation
- Centrally located oil pump and pickup for easy maintenance
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Item # 100985
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Specifications
Specifications
Briggs & Stratton V-Twin Vanguard Engine with Electric Start — 570cc, 18 HP, 1in. x 3in. Shaft, Model# 356447-0080-G1
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Engine Displacement
Same
570 cc
389 cc
163 cc
270 cc
Engine Type
Same
Vanguard V-Twin
GX Series OHV Commercial-duty
GX Series OHV Commercial-duty
GX Series OHV Commercial-duty
Shaft Diameter
Same
1
1 in
3/4 in
7/8 in
Start Type
Same
Electric
Electric and Recoil
Recoil
Recoil
Shaft Keyway
Same
1/4
0.25 in
0.18 in
0.25 in
Crankshaft
Same
Horizontal
Q-type
Horizontal
R-type
PTO Height
Same
5.25
5.25 in
4.17 in
5.25 in
Cylinders (qty.)
Same
2
1
1
1
Cylinder Bore
Same
Cast iron sleeve
Cast Iron
Cast Iron
Cast Iron
Fuel Tank
Same
No
No
Yes
Yes
Low Oil Shutdown
Same
No
Yes
Yes
Yes
Low Oil Alert
Same
No
Yes
Yes
Yes
Shaft Rotation (From PTO Shaft Side)
Same
Counterclockwise
Counter Clockwise
Counter Clockwise
Counter Clockwise
Governor System
Same
Mechanical
Centrifugal Mechanical
Centrifugal Mechanical
Centrifugal Mechanical
Ignition System
Same
Electronic
Electronic
Electronic
Electronic
Carburetor
Same
Float
Float, External Vent
Float, External Vent
Float, External Vent
Lubrication System
Same
Full pressure
Splash
Splash
Splash
Bearing Type
Same
Ball
Ball
Ball
-
Auto Compression Release
Same
Yes
Yes
Yes
Yes
Cooling System
Same
Air cooled
Air
Air
Air
Air Cleaner Type
Same
Paper
Dual Element
Oil Bath
Dual Element
Choke Control
Same
Yes
Manual
Manual
Manual
Throttle Control
Same
Adjustable for constant speed operation
Remote
Remote
Remote
Fuel Filter
Same
Yes
-
-
Yes
Charging System Amps
Same
16 (regulated)
18
-
-
Muffler Included
Same
No
Yes
Yes
Yes
Shaft Length
Same
-
3.48 in
2.43 in
2.09 in
Net Torque
Same
-
19.5 ft-lbs.
7.6 ft-lbs.
14.1 ft-lbs.
Net Power Output
Same
-
11.7 HP
4.8 HP
8.5 HP
Compression Ratio
Same
-
8.0:1
9:1
8.5:1
Oil Capacity
Same
-
1.16 qt
0.61 qt
1.16 qt
Bore
Same
-
3.5 in
2.7 in
2.3 in
Stroke
Same
-
2.5 in
1.8 in
2.3 in
Fuel Tank Capacity
Same
-
-
3.3 qt
5.6 qt
Shaft Diameter Metric
Same
-
-
-
22 mm