Parts for Mastercut 21AB452A059 / 2011: .Quick Reference 450 Series Parts

The air filter cartridge cleans the air as it comes into the engine. It will remove any particles and debris, keeping the engine free from buildup and problems. The air filter will become dirty and clogged with regular use and needs to be replaced as a part of routine maintenance. This is typically done once or twice a season, depending on frequency of use. It may be necessary to replace intermittently if there is an emergency issue. Air filters cannot be cleaned and should always be replaced with a genuine OEM replacement. This OEM air filter can be used with Briggs & Stratton engines in select lawn mowers and blowers from Toro, Husqvarna, and Briggs & Stratton. This pleated paper filter includes a plastic frame. The foam pre-filter cleaner is sold separately, and this cartridge is sold as an individual unit. Air filter replacements require no tools, but it is important to allow the engine to cool completely and wear gloves when performing maintenance and repairs.

This genuine fuel cap creates the seal to keep the fuel in the tank and prevent spillage while the lawn and garden equipment is in use. This cap can sometimes become lost or damaged, or the screw threads may strip over time. In any case, the failed cap needs to be replaced with an OEM part or the equipment will not be able to be used. This OEM fuel cap is manufactured by Briggs & Stratton and meets strict standards. It can be used with machines from Briggs & Stratton, as well as those from Toro, Murray, Snapper, and Simplicity. The cap fits various models of blowers, vacuums, and snow throwers. This fuel cap is sold as an individual unit and does not include additional parts or hardware. There are no tools required to replace the fuel cap. Simply remove the old cap if it isn't already missing and then screw the new cap into place. Be sure to work carefully to prevent fuel spillage and wear gloves to protect the hands. Make sure the new cap is threaded correctly when installing, as well.

Pre-cleaner filter wraps around your engine's air filter to trap large debris before it reaches the main filter. Replace when torn or clogged to maintain airflow and engine protection. Verify fit by model number.

Idler pulley for walk-behind mowers and tillers. Replace if belt slips, squeals, or pulleys wobble. Verify fit with your model number before ordering.

Replacement foam handle grip for lawn mowers and tillers. Cushions metal handles for comfortable operation. Replace if worn, torn, cracked, or missing.

This is a control cable that connects the tiller's handle-mounted controls to the engagement mechanism. It transmits operator input to engage or disengage the tines or drive system. Replace this cable if the tiller's controls feel loose, unresponsive, or if the cable is frayed, stretched, or broken.

Replacement wheel assembly for tillers. Allows forward and backward movement while breaking soil. Replace if wheels lose seal or become damaged.

This is a Briggs & Stratton Original Equipment 491588S Air Filter Cartridge. The purpose of this filter is to prevent dirt, dust, and debris from contaminating the carburetor and damaging the engine. This flat panel style, pleated paper air filter provides the first line of defense against the destructive effects of dirt ingestion. It is designed for 3.5 through 6.75 HP quantum engines and 625-1575 series engines. Over time, the air filter can get clogged or damaged, and this can lead to reduced engine performance. Locate the air filter cover, unscrew it, and remove the old filter. Make sure to clear out any debris that has found its way into the air filter assembly before inserting the new cartridge. Reattach the air filter cover and secure it with the screws. This replacement part works with generators, lawnmowers, pressure washers, wood chippers, and tillers. Aside from Briggs & Stratton, it is also compatible with specific products from Craftsman, Husqvarna, Lawn-Boy, Toro, Troy-Bilt, Simplicity, Snapper, and Wheel Horse. It is a genuine OEM replacement part and is sold individually.

V-belt rotates tiller tines. Replace when worn, stretched, or broken to restore tilling performance. Verify fit with your model number before ordering.

Filters debris from fuel before it reaches the engine. Replace annually or when experiencing fuel flow issues. Confirm fit with your model number.