MSKA21 (790000-849999) Exmark Lawn Mower - Overview

This Ni Nut-Lock, or Nylock Nut, is a Silver 1/4 x 20 metal nut. Sold individually, it can be adjusted using a wrench or socket and torque wrench to the manufacturer specfications, and is used to secure the sheer pin in place, on the impeller assembly. These nuts are a one-time use part due to their locking mechanism. You'll know the nut...Read more has broken when it appears to have damaged threads or rounded off edges. Customers found this to be an easy repair.

This is a Genuine Toro replacement part used on a variety of Walk Behind/Push Mowers. This is a Metal Half Moon Key and it is sold individually. The key helps to secure drive wheels to the Transmission Axle.

This is a compression spring that is used within various models of lawn mowers and is used to provide stability and extra control to the user during the operation of the equipment. This spring works in tandem with the rest of the axle assembly, such as the key, which is a small metal component that is inserted into slots on rotating parts...Read more like axles, to secure things such as wheels, within the entire assembly. If you notice wobbling, excessive vibrations or difficulty in maneuvering the lawnmower, the compression spring is likely worn, damaged or has lost its tension, and needs replacement. This compression spring is made of metal, is sold as an individual part meaning you will need to consider ordering 2 (one for each side of the lawnmower) and measures approximately 1/3-inch long. To replace this compression spring, you will need a socket wrench, flathead screwdriver and snap-ring pliers. It is recommended you prop your lawnmower up on a piece of scrap wood to make the removal and installation of the new tire easier. Use the flathead screwdriver, if necessary, to remove any wheel covers on your lawnmower, and then use the socket wrench to loosen and remove the wheel. Use some snap-ring pliers to remove the retaining ring on the outside of the wheel axle - you should then be able to remove the pinion connected to the axle. With the pinion out, you can remove the key in its keyway, and underneath should lie the compression spring, which can now be replaced. If you notice any of these parts that are also being removed are worn out or damaged, you will want to replace them immediately to prevent any future performance problems with your lawnmower.

This screw is an OEM part sourced directly from the manufacturer and is used in Toro snowthrowers. It requires a wrench and connects the ring-chute to the chute-discharge. The screw is made of metal and is sold as an individual part. Screws will need to be replaced when they become stripped.

The Ni Lock Nut (Nylock Nut) is a Silver, 5/16x18, individually sold metal nut. It can be adjusted and replaced using a wrench or socket and torque wrench to the manufacturer specfications, and is used to secure the sheer pin in place on the augur. These nuts are a one time use part due to their locking mechanism. You'll know the nut has...Read more broken because the augur will not spin, and this is when the part should be replaced. Customers found this to be an easy repair.

This is a Manufacturer Approved replacement nut for lawn and garden equipment. This item is Metal an is Sold Individually. A lock nut is a type of nut that resists loosening when properly threaded onto a bolt.

This authentic OEM sourced replacement bolt is generally used on Toro lawn mowers. The purpose of this bolt is to secure the cutting blade to the blade driver assembly. This is a hex head bolt which is sold individually. It includes a metal washer. Please note you would need a wrench to replace this blade bolt.

This metal ball bearing reduces friction and evenly distributes weight among the rotating parts in your lawn equipment. These bearings can be found in various areas such as the wheels, in pulleys, blades or augers. When the bearing is damaged, you may notice a few things. Your machine may produce rough or grinding noises and excessively p...Read morelay or wobble. The affected part may also become stuck. Immediate replacement is necessary to prevent increased friction, inefficient performance, and potential equipment failure. Removing the bearing depends on your model, so consult your user manual for guidance. You will need to use a screwdriver or pliers to remove the surrounding components around the bearing and a bearing puller, pry bar, or mallet to release the bearing itself from its housing. As ball bearings wear out together, it is advisable to replace all of them at once. Ensure you verify the number of bearings your machine needs before purchasing this OEM replacement part as it is sold individually.

This is a genuine replacement part manufactured for use with outdoor power equipment. This flanged hex head screw has several applications, please see model diagram for part use and location. This screw is available as an individual replacement part.

This is an authentic Toro replacement part manufactured for use with walk-behind lawnmowers. Mower blades eventually wear down from normal use and will require replacement. This special blade is designed for use with mower that use a grass bagging attachment. The blade is sold as an individual replacement part.

An authentic replacement part that is specially manufactured for use with Toro lawn mowers. This is the knob that is secured to the heigh-adjustment arm assembly, for correct location and uses make sure to check appropriate diagrams of your model. Please note this durable plastic part is sold individually.