Honda 28400-ZM0-634ZD (HRR212PDA) (HRR212SDA) (HRR212TDA) (HRR212TKA) Walk-Behind Lawn Mower Recoil Starter Assembly Replaces 28400-Z0L-V21ZB

What It Is

This is a genuine OEM Honda recoil starter assembly that replaces the pull-start mechanism on select Honda HRR212 walk-behind mowers. It’s the part that engages the engine flywheel when you pull the rope, allowing the mower to start.

Fitment & Compatibility

• Direct fit for: Honda HRR212PDA, HRR212SDA, HRR212TDA, and HRR212TKA models.
• Replaces OEM part number: 28400-Z0L-V21ZB. This is the updated version, so if your mower has the older 28400-Z0L-V21ZB, this swaps in without modification.
• What to check before buying: Verify your mower’s model number (stamped on a plate under the rear flap or near the engine). Measure the bolt hole spacing on your current starter (center-to-center of the two mounting bolts) – it should be 2.75 inches. This assembly is for Honda GCV160/GCV190 engines used in these specific HRR212 decks; it will not fit older HRR216 or HRX217 models without checking bolt pattern and rope length.
• OEM vs aftermarket: This is a genuine Honda part, not an aftermarket copy. If you see a cheaper “replaces” listing, expect lower-grade plastic and shorter rope life.

Key Things to Know

• Installation difficulty: Easy – 15 minutes with a 10mm socket and a flathead screwdriver. Disconnect the spark plug first.
• Rope length: Pre-wound with the correct length (about 60 inches). Do not swap ropes from an old unit unless you verify length.
• Common gotcha: The plastic housing can crack if you overtighten the mounting bolts. Hand-tighten plus a quarter turn is enough.
• Quality: Genuine Honda parts use reinforced nylon and a heavier-gauge spring. Aftermarket units often fail within a season.

Should You Buy It

If your HRR212’s pull rope is frayed, the spring is broken, or the pawls won’t catch, this is the right fix. It’s priced well below dealer cost for a genuine OEM part, and the high rating reflects trouble-free installation. Avoid cheap knockoffs – you’ll save $5 now and spend $20 again next year.