Parts for Tecumseh TYPE 643-19B: Gear Housing Asm Parts

This is an OEM spark plug designed for increased conductivity and heat control. It features a copper core electrode and fits several lawn and garden tools with small engines. The resistor-type spark plug facilitates a more robust, focused spark and faster throttle response. Equipment that does not start or becomes harder than average to start may have a dirty or fouled spark plug. Popping or sputtering engines may also signal time for spark plug replacement as the bad spark plug already misfires. Experts recommend replacing spark plugs on lawn mowers once per season. This component is easy to install. Only a wrench and a cool engine are needed to replace the spark plug. This replacement spark plug is compatible with mowers, passenger vehicles, power sports equipment, and marine applications. This OEM replacement spark plug is sourced directly from the manufacturer and is sold individually.

This lock nut secures appliance components and resists loosening from vibration. Replacing a stripped, rusted, or missing nut restores a firm, reliable connection to reduce noise and prevent parts from shifting or backing off.

• Secures brackets, shafts, pulleys, panels, or other hardware as designed by the manufacturer
• Helps prevent fasteners from loosening due to vibration and thermal cycling
• Common fix for rattling/vibration noises and components that work loose over time
• Replaces damaged, rounded, or missing original nut to restore proper fit

• Disconnect power and shut off gas/water supplies before servicing
• Remove the worn nut with the appropriate wrench or socket
• Start the new nut by hand to avoid cross-threading; tighten securely—do not overtighten
• Inspect the mating bolt/stud and any washers; replace if worn or damaged

This replacement part is a flywheel. This part is an important part of many different machines. The flywheel is typically attached to a rotating shaft and is responsible for smoothing the delivery of power from the motor to the machine. A new flywheel might be needed if the current one is no longer functioning properly. This can be due to normal wear and tear after years of use. Work gloves are recommended when working near the engine in any way. This is a genuine replacement part made by Midwest Engine. It is an OEM replacement part which will ensure a proper fit. This part is sold individually.