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This kit replaces the Kohler Triad TH16 on a Walker MTGHS mower with a Honda GX630 V-twin and includes the parts to mount it: driveline adapters, exhaust, electrical harness and a mechanical decompression carburetor. The GX630 brings a two-barrel carburetor, hemispherical combustion chamber, forged steel crankshaft and pressure-fed bearings, plus an internal oil cooler. It is a job for someone comfortable trimming the rear engine carriage and slotting the mounting holes about 1/16 inch. Against a straight engine swap, the bundled adapters and harness save sourcing parts separately, and the Honda's commercial warranty and broad dealer support are its main draw over the aging Kohler.
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Lowest price we've seen: $2,895.00 on Nov 14 at Repower Specialists. Tracked across 1 store since Nov 14.
This kit replaces the Kohler Triad TH16 engine in a Walker MTGHS mower with a new Honda GX630 engine. It includes the parts needed to convert the machine from the old engine to the new one, unless otherwise stated.
The GX630 has a two-barrel inner-vent carburetor for more precise fuel metering. Fuel economy is similar to fuel injection, with the simplicity of carburetion. It has a hemispherical combustion chamber, a forged steel crankshaft and pressure-fed crankshaft bearings. A high-capacity pump delivers oil consistently. A large-diameter air intake and a high-efficiency cooling fan handle cooling.
Installation requires two modifications to the equipment. The rear engine carriage must be trimmed so the Honda engine clears it. The engine mounting holes must be slotted about 1/16" for proper alignment.