Parts for Yard Machines 31AS231-729 / 2007: .Quick Reference 231-729 Parts

Fix starting problems or rough running on your snow thrower. This spark plug ignites fuel for reliable winter performance. Easy 10-minute DIY fix.

The drive V-belt, manufactured by Craftsman, is used in one- and two-stage snow blowers as well as tillers. This is a drive belt that connects the engine to the auger of the tiller or snowblower via a pulley at either end. This turns the blades of the tiller or the auger blades of the blower to expel snow. As a flexible, hardened rubber part connecting other moving parts, a V-belt is considered “replaceable,” meaning that users should expect to have to replace this part during normal use of the equipment. Signs that a drive V-belt may be going bad are a squealing sound when the blower's auger or the tiller's blades are first engaged, or if the auger is slow to engage and loses power during use. To replace the V-belt, the equipment must be secured and the spark plug caps removed. Tilt the device to reveal the location of the belt. It must detached from the engine pulley and the transmission pulley. When replacing the V-belt, before tightening the pulley, make sure all moving parts are properly aligned. This genuine OEM part is compatible with machines sold by MTD, Yard Man, Craftsman, and Yard Machine.

This is a simple set of lawnmower ignition keys. They’re also used for an array of riding mowers, lawn tractors, and even snowblowers. To simplify repair and replacement procedures, most manufacturers use standardized keys for all their machines in a given class. As a result, a single key can be used for dozens of machines. The keys are manufactured from stainless steel, with an INDAK logo stamped into the center. Regardless of whether the machine is a walk-behind mower or a full-sized lawn tractor, a keyed ignition is easier to operate than a recoil cord. Similarly, replacing a key is generally straightforward. The exception is if the old key has snapped off in the ignition. In this case, a set of needle-nosed pliers can sometimes be used to extract the key. A powerful magnet can also be helpful if the broken key is being stubborn. In the worst-case scenario, the ignition may need to be replaced. This is an OEM part sourced directly from MTD, and it is sold as a set of two.

Snow not throwing through chute? This rubber paddle works with the auger to move snow through your snowblower. Replace when worn to restore snow-throwing power.

The snowblower auger paddle is designed for use with various single-stage 21 MTD snow throwers and blowers. This part may also be referred to as the spiral crescent. This paddle is attached to the auger, which rotates when the engine is started. As the auger rotates, the paddle will pick up and throw the snow out of the way. This part may get damaged by debris or some type of accident, or it can wear down over time. Replace a broken or worn out snowblower paddle with a genuine OEM replacement paddle. This is an OEM replacement part from MTD that fits various models of snowblowers. It can be used with compatible models from Yard Machines, Yard-Man, Troy-Bilt, Husky, Ryobi, Bolens, and MTD machines. There are over 150 models in total that this paddle can work with. It is made out of durable rubber and comes sold individually. There are two screws at each end required for mounting, which are sold separately.

Replace a worn shave plate if snow isn't being gathered properly or the auger housing scrapes pavement. This scraper bar protects your snowblower base.