Autoverve Briggs & Stratton Starter for 12–21HP Single-Cylinder — 14-Tooth Steel Pinion, Direct-Fit Replacement

Autoverve replacement starter for Briggs & Stratton single-cylinder 12–21HP engines with a 14-tooth steel gear and steel flywheel ring gear. This heavy-duty motor starter is engineered as a direct-fit aftermarket replacement for specific Briggs & Stratton single-cylinder OHV engines and many factory-equipped riding mowers and zero-turn tractors. It is built to match the original equipment form and function for models that require a 14-tooth steel pinion and a steel flywheel ring gear, offering a cost-effective alternative to OEM parts while aiming to meet or exceed quality expectations.

How do I confirm this starter fits my mower?

Fitment depends on three hard specifications: gear tooth count, engine configuration, and flywheel material. Do not rely on the mower brand alone—inspect your original starter and engine to match the listed requirements.

• Count the starter gear teeth: this unit has a 14-tooth steel gear.
• Engine must be a single-cylinder Briggs & Stratton OHV (no V-twins).
• Your flywheel must have a steel ring gear (not plastic or L-head designs).

Which engine series and horsepower ranges are compatible?

This starter is intended for Briggs & Stratton single-cylinder engines from roughly 12 to 21 horsepower across multiple series. It supports a wide range of numbered series and model codes commonly used in residential and compact commercial lawn tractors.

• Horsepower coverage: 12 through 21 HP (including intermediate ratings such as 12.5, 14.5, 17.5, 19.5).
• Compatible series: 210000, 280000, 310000, 330000 families including models like 31C707, 31P777, 31R907, 33R877 and others.
• Not compatible with V-twin engines, Kawasaki, Kohler, or non-steel flywheel ring gears.

What mower makes and models will this starter work with?

When the mower is factory-equipped with a compatible Briggs & Stratton single-cylinder engine and a 14-tooth steel gear, this starter fits many John Deere, Troy-Bilt, Craftsman, Husqvarna, Poulan Pro, Cub Cadet/MTD and select Snapper/Murray/Ariens tractors. Always verify part numbers and the three critical checks before purchase.

• John Deere: 100, D, L, LA, E, S series and EZtrak Z225, Z235 models with the right B&S engine.
• Troy-Bilt and Craftsman: Pony, Bronco, T-series, Yard and Classic tractors with matching B&S engines.
• Husqvarna, Poulan Pro, Cub Cadet/MTD and other brands where a matching single-cylinder B&S engine is present.

What are the construction and performance highlights?

The starter combines a 14-tooth steel pinion with a robust aluminum housing and reinforced bracket to provide reliable engagement and resistance to heat and vibration. It’s manufactured to aftermarket standards intended to reduce frequent starter failures and to restore dependable cranking performance.

• 14-tooth hardened steel gear for secure flywheel engagement and faster cranking.
• Aluminum housing, reinforced bracket, and sturdy electrical terminal for durability.
• Manufactured to meet or exceed common aftermarket quality standards and direct-fit OEM part numbers.

Who is this for? This replacement starter is aimed at homeowners, lawn-care technicians, and small-property owners who need an affordable, reliable direct-fit replacement for Briggs & Stratton single-cylinder engines (12–21 HP) that use a 14-tooth steel gear and steel flywheel ring gear. It is not appropriate for multi-cylinder engines, non-Briggs & Stratton engine types, or systems with plastic flywheel ring gears—so buyers who can confirm the three pre-purchase checks will find this part a practical replacement option with warranty-backed after-sales support.

FAQ

Q: Does this starter fit V-twin engines?

A: No. This Autoverve starter fits Briggs & Stratton single-cylinder OHV engines only.

Q: How many gear teeth does this starter have?

A: This unit features a 14-tooth steel gear; count your original gear before ordering.