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Briggs & Stratton Snow Engine 20M307-0001-F1 14.5 GT 305cc

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Briggs & Stratton Snow Series Engine,14.5 Gross Torque, 305cc, 20M307-0001-F1, 1450 Series, Free Shipping, No Tax.

Fits many models of snowblowers & snowthrowers.

New in the Box, 2 year limited consumer engine warranty.
Crankshaft 3/4 in diameter x 2-21/32 in long with 3/16 in keyway, tapped 3/8 in -24
Charging Alternator 60W AC ONLY

*If your engine your replacing has a DC charging system you may be able to swap out parts.
Call us about it.

Base to centerline of crankshaft 4.17 inches.
See images above for more measurements.

We also have a Crankshaft Adapter Sleeve available to purchase to go from 3/4 shaft to 7/8 inch shaft and a one to go from 3/4 shaft to 1 inch shaft.

* Note: If replacing an engine with a 1" crankshaft and your pulleys have a FIXED key built into the pulleys. This engine will NOT work. The pulleys need to have a keyway cut into them to work.

Order 3/4 x 7/8"     Order 3/4 to 1"
2/4 to 1 inch Sleeve Adapter

Replacement Shortblock: 794910

Crankshaft Number: 794720


  • Maintenance-free Magnetron electronic ignition for quick, dependable starts.
  • Overhead valve design (OHV) for cooler operation and longer valve life.
  • Oversized controls for easy starting and operation with gloves or mittens .
  • Qualified to start down to -20 degrees Fahrenheit
  • Specially-designed covers and recoil for protection in cold weather operations .
  • Aluminized or coated muffler resists corrosion for longer life and provide quiet operation.
  • Electric start with recoil backup.
  • 60w AC only alternator
  • Buyer protection package provides 2 year limited consumer engine warranty.
Replaces 21M314-3017-F1
Engine Fuel Gasoline
Configuration Horizontal
Cylinders One
SKU 20M307-0001-F1
Top No Load Speed Set Eng No-load Speed To 3600 +/-100 RPM
Oil Capacity 28 fl. oz.
Chg System Alternator, 60w Ac Only With Ground Wire
Bearings Bearings, Plain Mag
Bore Type Koolbore
Bore Size 3.12
Stroke 2.44
Cylinder Head Cylinder, Aluminum
Flywheel Flywheel, Heavy Equip For Elec Start
Governor Mechanical Governor
Exhaust Muffler, Super Lo-tone Inst W/grd Brkt
Spark Plug Spark Plug, Resistor
Starting System Starter, Rewind With Mit Grip Handle


Crankshaft Specifications

  • Service Part Number: 794720
  • Square PTO Key: #13/16 Square
  • PTO Threads: 3/8-24 UNF
  • PTO Thread Location: Internal
  • PTO Shaft Diameter (in): 0.75
  • PTO Shaft Diameter (mm): 19.1
  • PTO Shaft Length (in): 2.303
  • PTO Shaft Length (mm): 58.5
  • Model: 20M307-0001-F1
  • UPC: 0694157455525
  • Shipping Weight: 69lbs
  • Manufactured by: Briggs-Stratton

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