Parts for Mtd 4P90MUD: 4P90mud Cylinder Head Parts

Fix oil leaks or loose valve covers with this valve cover bolt. Secures the valve cover to prevent oil seepage. Quick 10-minute repair for most mowers.

Fix oil leaks around the valve cover with this valve cover ring gasket. Seals the valve cover to prevent debris contamination. Simple DIY repair.

Fixes engine misfires and rough running caused by improper valve clearance. This adjusting nut helps restore correct valve timing on lawn mowers and tillers.

This genuine MTD replacement part is a rocker arm for use with snowblowers, lawn tractors, and other equipment with an engine. A properly functioning rocker arm is essential for the safe and reliable use of the equipment. The rocker arm works to open the intake and exhaust valves. The rocker arm may become worn out or damaged with extended use, necessitating replacement. Remember to check the rocker arm periodically to spot any wear or damage. This part is an identical replacement for a rocker arm that is missing, worn out, or damaged. Prior to working with this part, please refer to the original product manual for a full list of included parts and installation instructions. A wrench set may be required for installation of this part. For safety, always wear gloves and ensure unit is powered down and cool prior to performing any installation or repair.This high quality OEM replacement part is sourced directly from the manufacturer, and it is sold individually. It is made of high-quality durable metal. This part is compatible with a variety of MTD, Yard Machines, Troy-Bilt, Yard Man, Cub Cadet, Husky, and other equipment. Please note: original part numbers 1843974, 751-11966 is now obsolete, and manufacturer has replaced the original part numbers with this part.

Rocker stud bolt that secures the rocker arm assembly in small engines. Replace if threads are stripped, bolt is bent, or stud is broken or missing.

Replace your lawn mower's push rod guide if you're experiencing engine noise or reduced power. This guide keeps push rods aligned for proper valve operation.

Replaces a worn or damaged exhaust valve adjuster in your lawn equipment engine. Durable metal component that controls valve movement timing.

This is a replacement ex. valve spring retainer for use with snow blowers, lawnmowers, and log splitters. The function of a valve retainer is to fit on top of a valve spring and to keep it in place. This seal ensures that there is no oil leaking into the combustion chamber of the engine. Signs that the valve could be bad or going bad include misfiring, ticking sounds, and compression loss.The metal retainers are built to last, but they could fail over time. They could crack or break, which would affect the performance of the machine. This could eventually cause damage to the engine if it is not replaced.The ex. valve spring retainer This is compatible with a range of models of yard equipment from MTD, Yard Machines, Troy-Bilt, Yard-Man, Cub Cadet, and Husky. This is a genuine OEM replacement part that has been sourced from the manufacturer. It is sold individually.

Fix engine starting problems or loss of compression with this valve spring. Controls valve timing in small engines. Common repair for lawn tractors and snow throwers.

Intake valve seal prevents air and fuel from escaping during engine operation. Replace if you notice oil consumption or reduced performance. Verify fit with your engine model number before ordering.

Fix engine valve noise or loss of compression with this valve spring retainer. Secures valve springs to control valvetrain operation. DIY-friendly repair.

This valve kit is a genuine MTD part, sold individually. This valve kit can be used as a replacement part for a snowblower. The valve kit comes with all of the components necessary to replace the valves of a snowblower. The valve kit comes with a metal needle, a spring clip, and a plastic seal. The valves on a snowblower provide a safe passageway for the fuel to reach the carburetor.Remember to always wear gloves when handling, repairing, and operating outdoor equipment. Always unplug the appliance before performing any kind of repair or replacement.This is an OEM part sourced directly from the manufacturer. It is sold individually. This valve kit is compatible with the following outdoor appliance brands: MTD, Troy-Bilt, Craftsman, Cub Cadet, Yard Machines, Huskee, and Yard Man.

This valve kit is a genuine MTD part, sold individually. This valve kit can be used as a replacement part for a snowblower. The valve kit comes with all of the components necessary to replace the valves of a snowblower. The valve kit comes with a metal needle, a spring clip, and a plastic seal. The valves on a snowblower provide a safe passageway for the fuel to reach the carburetor.Remember to always wear gloves when handling, repairing, and operating outdoor equipment. Always unplug the appliance before performing any kind of repair or replacement.This is an OEM part sourced directly from the manufacturer. It is sold individually. This valve kit is compatible with the following outdoor appliance brands: MTD, Troy-Bilt, Craftsman, Cub Cadet, Yard Machines, Huskee, and Yard Man.

This is a small engine spark plug positioned in the engine cylinder head. It supplies the spark that will ignite the air-fuel mixture to enable an engine to produce power. This particular spark plug is designed with superior corrosion resistance and dependable performance. Small but mighty, this component allows for increased conductivity and heat control. If the spark plug is damaged or in poor condition, many problems may arise in equipment, including sudden stop while running, overheating, and excessive gas consumption. Replace the spark plug by disconnecting the spark plug wire first, then use a socket driver or wrench to remove the spark plug. Install the new spark plug by turning it by hand initially to avoid cross-threading. If it doesn't twist anymore, use a deep socket wrench or socket driver to tighten the plug until snug. The spark plug can also be used to tune up outdoor power equipment or improve a small engine. This part is recommended to be replaced once per season. This part works with lawn mowers, snowblowers, tillers, leaf blowers, log splitters, wood chippers, and others with small engines. It is compatible with brands such as Craftsman, Cub Cadet, Troy-Bilt, Murray, Yard Machines, MTD, Huskee, Bolens, Yard-Man, and MasterCut. This is a genuine OEM part directly from the manufacturer and is sold individually.

Replacement bolt for lawn tractors and outdoor power equipment. Secures components together. Order if your original bolt is lost, stripped, or damaged.

Engine losing compression or overheating? This cylinder head assembly restores proper combustion. Fits lawn tractors and walk-behind mowers. Advanced repair.

Seals the cylinder head to prevent oil and compression leaks in lawn mower engines. Replace if you notice oil seepage or loss of power. Verify fit with your model number.

Fix poor engine performance or loss of power with this push rod kit. Opens cylinder valves for proper combustion. Fits lawn tractors and mowers.

Complete engine gasket kit for lawn tractors and walk-behind mowers. Replace when rebuilding engine or repairing oil leaks. Verify fit with your model number.