Moturo carburetor repair kit for Polaris Trail Boss

Moturo Carburetor Repair Kit for Polaris Trail Boss 250 89-99

The Moturo carburetor repair kit for your Polaris Trail Boss 250 ATV (MY 89-99) — worn jets and O-rings are the most common cause of hard starting, unstable idling, and vacuum leaks. Complete set for the carburetor, ready for installation.

The repair kit includes the float needle valve, main jet, pilot jet, jet needle, and gaskets for the original carburetor of the Polaris Trail Boss 250 from model years 1989 to 1999. Jet sizes follow factory specifications; float height and idle mixture are adjusted according to the workshop manual.

Typical symptoms such as hard starting, fluctuating idle, or the smell of gasoline disappear once these wear parts are replaced. Disassemble the carburetor, blow out the channels and jets with brake cleaner and compressed air, and check components for proper fit and dimensional accuracy before installation.

Replacement takes about an hour using a hex key set, screwdriver set, brake cleaner, and compressed air.

Carburetor repair kit for the Polaris Trail Boss 250, manufactured by Moturo.

Performance · Material · Specifications

• Float needle valve, main jet, pilot jet, and jet needle in the set
• Jet sizes follow the factory bores of the original Polaris carburetor
• Gaskets and small parts for a complete carburetor service

Important Notes – Please Read

Original replacement part design, no separate type approval (ABE) required. Wear part kit for service, does not require registration. Does not fit the Polaris Trail Boss 350 or models with a different carburetor type.

Tools & Time Required

• Hex key set in standard sizes
• Screwdriver set
• Brake cleaner and compressed air for cleaning the channels
• Approximately one hour for an experienced mechanic

Scope of Delivery

1 × Carburetor repair kit with float needle valve, main jet, pilot jet, jet needle, O-rings, and small parts. Not included: tools, carburetor housing, float, throttle slide.

Frequently Asked Questions

Does this kit also fit the Trail Boss 350?
No, it has a different carburetor size and jet dimensions.

Do I have to completely disassemble the carburetor?
Yes, disassembly is necessary for a clean replacement of the jets and float needle valve.

Do I need a TÜV registration?
No. This is a wear part in the original replacement part design.