Autoverve Briggs & Stratton Starter for 12–21HP Single‑Cylinder Engines — 14‑Tooth Steel Gear, Aluminium Housing

Autoverve replacement motor starter engineered for Briggs & Stratton single‑cylinder 12–21 HP engines with a 14‑tooth steel gear — a direct-fit option for many John Deere, Troy‑Bilt, Craftsman, Husqvarna and Cub Cadet tractors.

If your riding mower fails to crank reliably, a worn or damaged starter is often the cause. This Autoverve starter is manufactured as an aftermarket direct replacement for specific Briggs & Stratton engine series and common OEM part numbers. It is built with a 14‑tooth steel drive gear, aluminum housing and reinforced mounting for dependable engagement, so long as you confirm engine type and flywheel ring gear compatibility before ordering.

How do I verify this starter fits my mower?

Don’t rely on mower brand alone — check three hardware details on your existing starter and engine. Confirm the gear tooth count, that your engine is a single‑cylinder OHV, and that the flywheel has a steel ring gear.

• Count the drive gear teeth: this unit requires 14 teeth.
• Engine type: compatible only with Briggs & Stratton single‑cylinder OHV/Intek/Powerbuilt engines.
• Flywheel: must have a steel ring gear (not plastic or older L‑head designs).
• Cross‑reference OEM numbers like 593934, 693551, MIA13018 for a match.

Which engine series and horsepower ratings are supported?

This starter covers a broad range of Briggs & Stratton single‑cylinder engines from 12 to 21 HP across several model families. It’s compatible with many 210000, 280000, 310000 and 330000 series engines listed by model codes in the compatibility guide.

• Supported HP: 12–21 (including half‑step ratings like 12.5, 14.5, 17.5, 19.5).
• Included series examples: 31C707, 31P777, 31R907, 33R877, 21R707, 28M707.
• Not compatible with V‑twin (dual‑cylinder) engines or non‑Briggs single‑cylinder brands.

Which mower makes and models commonly use this starter?

This part is used widely by factory‑equipped Briggs & Stratton single‑cylinder tractors and zero‑turns. It fits many John Deere, Troy‑Bilt, Craftsman, Husqvarna, Poulan Pro and Cub Cadet models provided they have the listed engine configuration.

• John Deere: 100, D, L, LA and EZtrak series such as Z225 and Z235.
• Troy‑Bilt & Craftsman: select Pony, Bronco, T‑Series and yard tractors like YS4500.
• Husqvarna & Cub Cadet: YTH models, LTH series, CC30 and LTX models matching B&S single‑cylinder engines.
• Also fits select Poulan Pro, Snapper, Murray and Ariens tractors with compatible engines.

What are the product’s construction details and reliability features?

The starter combines durable materials and focused assembly to handle typical lawn‑tractor starting demands. It uses a steel 14‑tooth gear for positive mesh with the flywheel, an aluminum housing to reduce weight and a reinforced bracket and terminal for stability under vibration.

• 14‑tooth steel drive gear for smooth engagement and reduced wear.
• Aluminum housing and reinforced bracket for heat and vibration resistance.
• Manufactured to aftermarket quality standards to meet or exceed OEM fitment.
• Direct replacements for common OEM part numbers and aftermarket crossrefs.

Who is this for? If you own a lawn tractor or zero‑turn built with a Briggs & Stratton single‑cylinder OHV engine in the 12–21 HP range and your original starter shows wear, clicks, or fails to crank, this Autoverve starter is designed as a durable, cost‑effective replacement. It’s ideal for homeowners and small‑property contractors who want a reliable direct‑fit unit — but only buy after verifying the gear tooth count, engine type, and steel flywheel ring gear to avoid fitment issues or damage.