951-12785 Carburetor Kit - Fits Troy Bilt Tiller Super Bronco Rototiller 208cc Cub Cadet RT65 751-12785 C46540 46515
951-12785 carburetor kit with gaskets and choke lever for Troy Bilt and Cub Cadet 208cc engines.
951-12785 carburetor replacement for Troy Bilt and Cub Cadet 208cc engines shown in promotional lifestyle graphic.
951-12785 carburetor kit including one carburetor, three gaskets, and a choke lever for 208cc engines.
951-12785 carburetor kit showing detailed dimensional measurements for Troy Bilt and Cub Cadet engine compatibility.
951-12785 carburetor replacement for Troy Bilt and Cub Cadet 208cc engines with compatibility chart and equipment images.
951-12785 carburetor replacement for Troy Bilt tiller and generator engines with compatibility list infographic.
951-12785 carburetor kit diagram showing fuel inlet, idle speed screw, idle mixture screw, bowl vent, and air jet orifice.
Four-angle view of 951-12785 aluminum alloy carburetor for Troy Bilt and Cub Cadet 208cc engines.
951-12785 carburetor kit with gaskets for Troy Bilt and Cub Cadet 208cc rototiller engines.
951-12785 carburetor kit with gaskets and choke lever for Troy Bilt and Cub Cadet 208cc engines.
951-12785 carburetor replacement for Troy Bilt and Cub Cadet 208cc engines shown in promotional lifestyle graphic.
951-12785 carburetor kit including one carburetor, three gaskets, and a choke lever for 208cc engines.
951-12785 carburetor kit showing detailed dimensional measurements for Troy Bilt and Cub Cadet engine compatibility.
951-12785 carburetor replacement for Troy Bilt and Cub Cadet 208cc engines with compatibility chart and equipment images.
951-12785 carburetor replacement for Troy Bilt tiller and generator engines with compatibility list infographic.
951-12785 carburetor kit diagram showing fuel inlet, idle speed screw, idle mixture screw, bowl vent, and air jet orifice.
Four-angle view of 951-12785 aluminum alloy carburetor for Troy Bilt and Cub Cadet 208cc engines.
951-12785 carburetor kit with gaskets for Troy Bilt and Cub Cadet 208cc rototiller engines.
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951-12785 Carburetor Kit - Fits Troy Bilt Tiller Super Bronco Rototiller 208cc Cub Cadet RT65 751-12785 C46540 46515

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951-12785 Carburetor Kit

Key Features

  • Direct replacement carburetor assembly
  • Engineered to original equipment specifications for fit and performance
  • Complete kit includes carburetor, gaskets, and fuel line
  • Regulates the air and fuel mixture for efficient engine operation

Replaces / Cross-Reference Part Numbers

  • 951-12785
  • 751-12785
  • C46540
  • 46515

Compatibility & Fitment

  • Fits Troy Bilt OHV 208cc and 212cc engines
  • Compatible with Troy Bilt Super Bronco Rototiller
  • Compatible with Cub Cadet RT65 Tiller
  • Also fits select generator models using the specified engines

When to Replace

  • Engine will not start or is hard to start
  • Engine runs rough, stalls, or surges
  • Noticeable decrease in fuel efficiency
  • Black smoke emitting from the exhaust
  • Fuel leaking from the carburetor body

Installation Tips

  • Disconnect the spark plug wire before beginning work
  • Drain the fuel tank or clamp the fuel line to prevent spills
  • Photograph the linkage and fuel line connections on the old carburetor for reference
  • Ensure all old gasket material is removed from the mounting surfaces
  • Use the new gaskets provided in the kit for a proper seal
  • After installation, check for fuel leaks before starting the engine
  • Minor adjustments to idle or mixture screws may be required for optimal performance

FAQ

This carburetor kit is commonly listed for select Troy-Bilt and Cub Cadet tillers, including Troy-Bilt Super Bronco rototillers and Cub Cadet RT65 units, plus some Champion generators such as C46540 and 46515. Listings also commonly associate this carburetor family with certain Craftsman, MTD, Yard Machines, Huskee, and Yard-Man equipment that use related 208cc/212cc OHV engines. Because fitment can vary by engine spec number, match your original carburetor and part number before ordering.
Commonly referenced numbers for this carburetor family include 951-12785, 751-12785, 951-05021, 751-05021, 951-12124, 951-10797, 751-10797, 751-14013, and 951-14013. The safest match is to compare the number on your original parts list or engine documentation with these numbers.
This style of carburetor is commonly tied to Troy-Bilt/MTD-family OHV 208cc and 212cc engines, and is often listed with engine series such as 170-COA, 170-T0, 170-T0A, 170-T0B, 170-TU, 170-V0A, 170-V0B, 170-VU, 270-V0, and 270-VU. Some listings also reference Huayi/HY 170-series carburetor applications. Engine-spec matching is more reliable than going by equipment brand alone.
Common symptoms include hard starting, surging at idle or under load, needing choke to keep running, fuel leakage from the carburetor, black exhaust smoke from over-fueling, or an engine that starts briefly on primer fluid and then dies. On tillers and generators, stale fuel is a very common cause of blocked jets, varnish buildup, or a sticking float/needle inside the carburetor.
Installation is usually a moderate DIY job. On most tillers or portable generators, access involves removing the air filter housing, disconnecting the fuel line, unhooking governor/throttle linkage, and swapping the carburetor. Basic tools are typically a screwdriver, needle-nose pliers, a small socket set or nut driver, and a container or clamp for the fuel line. If the machine is accessible and the fasteners are not seized, the job often takes about 20 to 45 minutes.
Drain old fuel first and inspect the fuel tank for debris or water contamination. It is also smart to check the fuel line, fuel shutoff, tank outlet, primer/choke linkage, intake gasket condition, and air filter. If the old carburetor failed due to stale ethanol fuel, replacing the carburetor alone may not solve the problem unless the tank and fuel line are cleaned too.
Yes. This carburetor family is used across multiple brands and machine types, so visual similarity alone is not enough. Pay close attention to throttle/governor linkage orientation, choke lever style, fuel inlet position, and gasket layout. Some versions are supplied as a carburetor assembly and may include a metal carburetor body with a plastic lever, so compare those details with your original setup before installation.