Sierra 18-7744 Carburetor Kit for Yamaha 115 HP and 130 HP Outboards (1990-1991)

The Sierra 18-7744 Carburetor Kit is a complete rebuild kit designed for select Yamaha 115 HP and 130 HP (1990-1991) outboard engines. It is built to restore carburetor performance on engines suffering from rough idle, hard starting, or fuel leaks caused by worn gaskets, floats, and needle valves. Each Sierra product meets or exceeds the original equipment part it replaces, making this kit a reliable choice for a full carburetor overhaul rather than piecing together individual components.

The kit supplies every wear part needed for a thorough rebuild: carburetor mounting gaskets, needle valves, floats, float bowl gaskets, a full set of smaller gaskets, float pins, O-rings, panhead screws, spring washers, and air adjusting screws. Components carry a machined exterior finish for consistent fit and sealing. Because this fitment is specific to certain Yamaha outboard applications, buyers should confirm their engine's part numbers before ordering to ensure proper fit.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7744
• Product Type: Carburetor Kit
• Compatible Engine: Yamaha 115 HP and 130 HP outboard engines
• Compatible Years: 1990-1991
• Weight: 0.36 pounds
• Unit Count: 1
• Exterior Finish: Machined
• Included Components: 2 carburetor mounting gaskets, 4 needle valves, 4 floats, 2 float bowl gaskets, 15 gaskets, 4 float pins, 4 O-rings, 2 panhead screws, 2 spring washers, 4 air adjusting screws

Fitment

• Yamaha 115 HP and 130 HP (1990-1991) outboard engines

Replaces (OEM)

• Mallory 9-37518
• Yamaha Outboard 6N6-W0093-00-00
• Yamaha Outboard 6N6-W0093-02-00

Frequently Asked Questions

What engines does the Sierra 18-7744 Carburetor Kit fit? The Sierra 18-7744 Carburetor Kit is designed for select Yamaha 115 HP and 130 HP (1990-1991) outboard engines. Fit is specific, so check your engine's part numbers before ordering.

What OEM part numbers does the 18-7744 kit cross-reference? It is interchangeable with Mallory 9-37518 and Yamaha Outboard 6N6-W0093-00-00 and 6N6-W0093-02-00, so any of these numbers can be used to confirm the correct match for the Sierra 18-7744.

What is included in the Sierra 18-7744 Carburetor Kit? The kit contains 2 carburetor mounting gaskets, 4 needle valves, 4 floats, 2 float bowl gaskets, 15 additional gaskets, 4 float pins, 4 O-rings, 2 panhead screws, 2 spring washers, and 4 air adjusting screws.

How much does the 18-7744 Carburetor Kit weigh? The Sierra 18-7744 Carburetor Kit weighs 0.36 pounds.

Is the Sierra 18-7744 a genuine OEM part or an aftermarket replacement? Sierra 18-7744 is an aftermarket replacement kit; Sierra states each of its products meets or exceeds the original equipment part it replaces.

How many carburetors does one 18-7744 kit service? One Sierra 18-7744 kit includes parts for multiple carburetors on a Yamaha 115 HP or 130 HP outboard, with quantities such as 4 needle valves and 4 floats supplied per kit.

Does the 18-7744 kit work on Yamaha outboards from other model years? The Sierra 18-7744 Carburetor Kit is designated for select Yamaha 115 HP and 130 HP (1990-1991) outboard engines; buyers should verify their engine's part numbers since fit is specific.

What finish do the components in the 18-7744 kit have? The carburetor kit components have a machined exterior finish.

Can the Sierra 18-7744 replace a Mallory carburetor kit? Yes, the Sierra 18-7744 is interchangeable with Mallory 9-37518, making it a suitable replacement for that Mallory kit on compatible Yamaha outboards.

Does the 18-7744 kit include float bowl gaskets? Yes, the Sierra 18-7744 Carburetor Kit includes 2 float bowl gaskets along with the other rebuild components.

Are O-rings and screws included with the 18-7744 kit, or sold separately? They are included: the Sierra 18-7744 kit comes with 4 O-rings, 2 panhead screws, and 2 spring washers as part of the complete kit.