King Kutter Tiller Top Gearbox Parts

Replacement top gearbox components for King Kutter rotary tillers, covering housings, shafts, gears, bearings, seals, gaskets, and hardware for TG, TG-G, and RTG series gearboxes across 4ft to 7ft tiller widths.

Fits Models At A Glance

• TG Series: TG Rotary Tillers
• TG-G Series: TG-G Rotary Tillers
• RTG Series: RTG Rotary Tillers

Key Notes

• Application: Top gearbox rebuild and repair for King Kutter rotary tillers
• Shafts & Gears: Output shafts, 13-tooth pinion shafts, and 19-tooth output gears
• Sealing: Double lip input and output seals plus 0.2mm and 0.5mm gasket options
• Bearings: Sealed ball bearings and input/output shaft bearings
• Hardware: Retainer rings, bolt sets, relief plugs, spacers, and shim packages

Why Choose Broken Tractor

• ✅ Complete gearbox rebuild parts under one roof
• ✅ Fast shipping from two US locations
• ✅ Model-specific fitment for TG, TG-G, RTG

Frequently Asked Questions

What parts do I need to rebuild a King Kutter tiller top gearbox?

A full top gearbox rebuild typically uses new bearings, double lip input and output seals, gaskets, and shims, along with any worn shafts or gears. Broken Tractor carries sealed ball bearings, input and output shaft bearings, double lip seals, 0.2mm and 0.5mm gaskets, shim packages, and hardware for TG, TG-G, and RTG gearboxes. Match each part number to your gearbox to be sure you order the correct components.

Do King Kutter TG, TG-G, and RTG tiller gearbox parts interchange?

Many top gearbox components, including housings, seals, bearings, and the 19-tooth output gear, are listed to fit TG, TG-G, and RTG series tillers. However, the 13-tooth pinion shaft is split by series, with one version for TG and TG-G (SKU 902325) and a separate version for RTG (SKU 902334). Confirm your series and match the part number before ordering.

How do I choose the right output shaft for my King Kutter tiller?

The output shaft is offered in options covering 4ft to 7ft tiller widths under SKUs 902324 through 902336. Measure your tiller width and match it to the correct option so the shaft fits your gearbox and tine assembly. If you are unsure which width you have, confirm with the parts team before ordering.

What gasket thickness should I use for a King Kutter tiller gearbox?

Broken Tractor offers both input and output shaft gaskets in 0.2mm and 0.5mm options. These thicknesses are used together with the shim package to set the correct bearing preload and shaft endplay during a rebuild. Order both thicknesses so you can adjust the stack as needed when reassembling the gearbox.

How many teeth are on the King Kutter tiller pinion shaft and output gear?

The pinion shaft has 13 teeth and the output gear has 19 teeth. The 19-tooth output gear (SKU 902326) is listed for TG, TG-G, and RTG gearboxes, while the 13-tooth pinion shaft comes in a TG and TG-G version and a separate RTG version. Match the pinion shaft to your series to get the correct gear set.