MDAIRC Carburetor Kit for Kohler KT730 KT735 KT740 KT745 22-26HP — Complete Repair Kit with Fuel Pump & Filters

A direct-fit replacement carburetor for select Kohler KT series engines (KT730, KT735, KT740, KT745) rated 22–26HP, supplied as a complete kit with fuel line, filters, pump, gaskets and spark plugs.

If your Kohler-powered mower or commercial machine is coughing, running rough, or difficult to start, a worn or clogged carburetor is a common source of trouble. This MDAIRC carburetor assembly is designed to work with several Kohler part numbers—such as 1685321-S, 16 853 21S, 3285361S and related references—offering a single replacement option that includes the most frequently replaced support parts so you can restore proper fuel delivery and reduce downtime.

How will this carburetor improve startup and idle stability?

Replacing an old carburetor with this MDAIRC unit re-establishes correct air–fuel mixture and float behavior, which helps engines start more reliably and hold a steady idle. The included gaskets and fuel line minimize vacuum leaks that commonly cause stalling or hunting at low RPMs.

• Precise fuel metering to reduce hard starts
• New fuel pump for consistent pressure
• Fresh gaskets and clamps to prevent leaks
• Extra air filter to improve intake cleanliness

Which engines and part numbers does this kit fit?

This carburetor is compatible with several Kohler references and many KT-series engines used in lawn and light commercial equipment. Verify fit by comparing your engine’s part number to the listed references before installation.

• Compatible Kohler references: 1685321-S, 16 853 21S, 32 853 61S, 3285361S
• Designed for KT730, KT735, KT740, KT745 models
• Suitable for 22HP, 23HP, 24HP, 25HP, 26HP variants
• Check your engine tag or consult your manual to confirm

What comes in the package and why are those parts included?

The kit ships with the carburetor and a selection of consumables to streamline the repair and reduce the need for extra orders. These spare parts cover common failure points like clogged filters, deteriorated fuel lines, and worn spark plugs.

• 1x MDAIRC carburetor assembly for direct replacement
• 1x fuel line, 2x gaskets, and 4x clamps to ensure secure connections
• 1x fuel pump, fuel filter, oil filter, and 32 083 09-S air filter
• 2x spark plugs and 1x fuel shut-off valve for comprehensive maintenance

How difficult is installation and what should I check first?

Installation is moderate for someone with basic small-engine experience and common hand tools. Before installing, inspect the throttle and choke linkages, note gasket orientation, and ensure the intake manifold surfaces are clean to prevent air leaks.

• Disconnect battery and drain fuel for safety
• Compare old carburetor to the new unit for mounting and port alignment
• Replace gaskets and tighten clamps to specified torque where possible
• Test run and fine-tune idle/mixture screws according to engine manual

Who this is for: This kit is aimed at owners, small-fleet managers, and repair technicians who maintain Kohler KT-series engines on lawn tractors, zero-turn mowers, and light commercial equipment. It’s ideal when you need a single replacement that includes the small parts often required during a carburetor swap, helping you complete the job in one visit without sourcing multiple components.