Automost GX390 Pull Start Assembly Recoil Starter for Honda GX340 GX390 – 11–13hp 420cc

Overview

The Automost GX390 Pull Start Assembly is a purpose-built recoil starter designed to deliver smooth, dependable starts on Honda GX340 and GX390 powered machines, while also fitting a broad range of small engines and generators in the 389cc–420cc class. Whether you’re reviving a generator after a storm or keeping a lawn mower ready for seasonal use, this unit is crafted to support steady pulls and consistent operation without fuss.

Built with practical usability in mind, the recoil starter pairs a durable nylon rope with a protective PVC handle to help you maintain grip and control during starting. The result is a more confident pull experience, especially in outdoor or dusty environments where weather and debris can impact performance. The compact, robust design fits neatly into many existing engine housings, reducing downtime and simplifying replacements for both DIY enthusiasts and pros.

Key fit and features

• Compatibility: Perfect fit for Honda GX340, GX390, GX610, and GX620 engines, plus many 389cc–420cc engines and generators.
• OEM Standard: Replaces or matches OEM part numbers 28400-ZE3-W01ZA, 28400-ZE3-W01ZB, 28400-ZE3-W01ZP, 28400-ZE3-W02ZB, 28400-ZE3-W02ZP.
• PVC Handle and Nylon Rope: Protective grip and durable cord designed for repeated starts.
• Size: Center-to-center distance is 200mm; center-to-center bolt pattern is 172mm (triangle).
• Versatile Use: Suitable for generators, lawn mowers, concrete saws, scarifiers, snow blowers, pressure washers, water pumps, and more.

Practical benefits in real-world use

Expect smoother starts and reliable operation across multiple equipment types. The ergonomic handle and sturdy rope help reduce fatigue during routine maintenance or emergency startups, while the broad compatibility gives you flexibility when replacing worn components in mixed fleets.

What to expect during installation

• Verify alignment using the 200mm center-to-center measurement and the 172mm bolt pattern to ensure a proper fit.
• Consult OEM guidelines when replacing the recoil to maintain efficiency and long-term performance.

Usage ideas

Keep portable power ready for weekend workloads or unexpected outages: prime a generator for outages, maintain lawn care gear for easy seasonal starts, or keep a spare on hand for quick repair jobs. While results can vary by model and condition, a proper replacement can help streamline starting routines and reduce downtime.