The recoil starter is the part that takes the abuse on any pull-start engine — springs fatigue, ropes fray and pawls wear until the engine turns but will not catch. Replacing the assembly is a straightforward job and restores reliable starting.
This is the assembly for WB20 pumps built before October 2017, part number 28400Z4M003ZA. Honda changed the design at that point, and the two are not interchangeable — check the build date or the existing part number before ordering. If yours is the newer unit you want part 28400Z4M801ZB instead.
- Genuine Honda part 28400Z4M003ZA
- Recoil starter assembly for the WB20 pump
- Fits WB20 pumps built before October 2017
- Not interchangeable with the post-2017 assembly (28400Z4M801ZB)
- Restores reliable pull starting
