Z478-SU MTD Engine - Overview

This mounting bolt seals the fuel system and keeps the fuel bolt securely attached to the carburetor in a variety of gas-powered outdoor equipment. It is a genuine OEM part made of metal with dimensions of 0.25-20 x 0.875 inches. If you notice that the bolt is corroded or rusted, it will need to be replaced. A faulty or loose mounting bol...Read moret may cause fuel to leak, make it difficult to start or run your equipment engine, and may allow contaminants to enter the engine. The bolt is easy to install using a wrench or socket. Be careful not to overtighten the bolt as this may damage the fuel bowl. Each item is sold individually.

Ensure reliable cold-weather starts with this genuine OEM primer bulb, designed specifically for use with Yard Machines and MTD snowblowers. Unlike aftermarket alternatives, this high-quality part is sourced directly from the original manufacturer, guaranteeing a perfect fit and dependable performance. The primer bulb plays a crucial r...Read moreole by forcing fuel into the carburetor, making it easier to start your engine—especially in colder conditions. Over time, the rubber material can lose elasticity or develop cracks, which can affect performance and require replacement. This durable rubber primer bulb is built to withstand regular use and is sold individually. Replacing a worn primer bulb is a simple and effective way to keep your snowblower running smoothly all season long.

This genuine part is a M6-1 x 12 Grade 8.8 mounting bolt that is zinc-plated. It is used to secure parts of your machine together, keeping these components tightly attached to each other so that they do not budge during operation. In lawn equipment, this bolt is usually used to attach the engine to the housing of the machine, but you may ...Read morealso find it in other areas of the machine. If the bolt rattles when you shake it, even when tightened, it is time to replace it. It must also be changed if it is corroded or bent, or else it may damage the components it is holding together. You will need to remove this mounting bolt with a socket wrench. This part is sold separately, so it is important to consult your user manual to understand how many bolts your machine needs. If you were initially replacing one bolt on your machine, you should consider purchasing more, as these bolts wear out at the same rate and you may end up needing to replace multiple bolts at once.

This is an authentic part that is supplied directly from the original equipment manufacturer for Craftsman snow blowers. The carburetor gasket creates an airtight seal between the carburetor and the engine block to prevent leaks and debris from coming in the carburetor. This part is made head resistant material and is sold individually. F...Read moreor installation, you will need a screwdriver to remove any covers or shrouds. Before starting this repair, let the engine cool and disconnect the spark plug wire and boot.

This is an authentic replacement part that has been sourced from the original manufacturer to be used snowthrowers from MTD, Troy-Bilt, and Yard Machines. The carburetor is a complete part assembly that is used to supply the engine with a mixture of fuel and air. This item is available as an individual replacement part.

This is a genuine manufacturer approved replacement spark plug. It is an authentic OEM part commonly used on a variety of lawn and garden equipment. The purpose of a spark plug is to deliver electricity from an ignition system to the combustion chamber. Over time spark plugs tend to wear out, get dirty or fouled requiring replacement. Inc...Read moreludes one (1) spark plug per order. You would need a spark plug wrench or a socket wrench to install the spark plug. Please note, after replacing it, you should gap the spark plug according to the owners manual of the outdoor product you have.