Arrowhead Tecumseh Replacement Starter for 8–13HP Snowblowers — 16-Spline, 120V CCW (Fits 33329/37000)

Compact direct-drive starter designed to replace Tecumseh part numbers 33329, 33329C/D/E and 37000 in 8–13HP snowblower engines.

This Arrowhead aftermarket starter is built as a 100% new replacement for Tecumseh Snow King and industrial engines. It matches the original equipment fit and key dimensions — including 16 splines, 120V operation and counterclockwise rotation — so you can restore reliable starting on affected HM-series Tecumseh engines without modifying the machine.

Which engines and models will this starter work with?

This starter is made to fit a range of Tecumseh HM-series engines commonly found on snowblowers and small industrial equipment. Check your engine model and part number to confirm compatibility before purchasing.

• Fits Tecumseh models HMSK80 through HMSK105 and OHSK110 through OHSK13 (8HP–13HP)
• Compatible engine codes include HM100-159106L, HM100-159129L, HM100-159138M/N/P/R, HM100-159159N/P, HM100-159193R, HM100-159208R, HM100-159209R, HM100-159211R, HM70-132000 and variants
• Direct-replacement for OEM numbers: Tecumseh 33329 series and 37000, Cargo 112570, Oregon 33-738, Stens 435-615

How do the starter’s specifications affect installation and fit?

The starter uses the same mounting geometry and drive interface as the OEM unit so it installs without adapters on matching engines. Review the listed dimensions to ensure bolt hole spacing and pinion size align with your flywheel and mounting points.

• Type: Direct Drive (DD) with 16 teeth/splines and 32.4mm (1.276 in) pinion OD
• Rotation: Counterclockwise (CCW); Voltage: 120 Volts
• Two unthreaded 6mm ID mounting holes; approximate weight 6.65 lbs (3.02 kg)

What performance and quality should I expect from this aftermarket unit?

Arrowhead’s unit is manufactured to meet or exceed OEM specifications, offering equivalent mechanical strength and electrical characteristics for dependable starting. It’s intended as a like-for-like replacement rather than an upgrade with altered gearing or voltage.

• 100% new aftermarket construction built to OEM tolerances
• Robust gear teeth and durable housing suitable for cold-weather starts
• Packaged and labeled to simplify part verification and installation

What should I check before ordering and installing the starter?

Confirm your engine model, the OEM starter part number, pinion tooth count and rotation. If any dimensions or mounting features differ, this unit may not fit or engage correctly.

• Verify engine code and OEM part numbers listed in compatibility section
• Measure pinion OD (32.4mm) and confirm 16 splines/teeth
• Confirm CCW rotation and 120V electrical compatibility

Who is this for: This Arrowhead starter is aimed at snowblower owners, small equipment repair shops and backyard mechanics who need a direct, OEM-style replacement for Tecumseh 8–13HP engines. It’s ideal if you want a drop-in starter matching Tecumseh part numbers (33329 series, 37000) and alternatives from Cargo, Oregon or Stens without modifying the machine. If you’re unsure about fitment, compare the engine codes and dimensions listed or contact customer support for help identifying the correct replacement.