Parts for Craftsman 316.731970: General Assembly Parts

Throttle grip assembly for gas line trimmers. Replaces broken, cracked, or worn throttle grips that affect operator comfort and control during use.

Throttle trigger handle for gas line trimmers. Mounts on the main handle shaft to control engine speed. Replace if cracked, broken, or unresponsive.

Replacement throttle trigger spring for gas line trimmers. Installs inside the throttle trigger assembly. Needed when original spring is broken or missing.

The On/Off Switch is an OEM part for MTD outdoor power equipment. This switch is a crucial component for the safe operation of various types of lawn and garden equipment, including lawn mowers, snow blowers, and other powered tools. 

Causes of damage to the On/Off Switch often involve wear and tear from regular use, exposure to harsh outdoor conditions that can corrode or damage electrical components, or accidental impacts that can physically damage the switch.

Symptoms of a bad On/Off Switch include:

• The equipment failing to start
• The machine not stopping when the switch is turned to the off position
• Intermittent power or erratic starting and stopping

This OEM replacement part can be used on trimmers from Craftsman, Yard-Man, Cub Cadet, Bolens, Ryobi, Huskee, Troy-Bilt, MTD, Murray, and Yard Machines.

Throttle cable assembly for gas line trimmers. Connects carburetor to control lever. Replace if cable is stretched, frayed, kinked, or broken from use.

24.932" boom assembly for gas line trimmers. Includes internal drive shaft. Replace if boom tube is bent, cracked, or damaged from impact or wear.

Handle assembly for gas line trimmers. Installs on the shaft to provide grip and control. Replace if cracked, broken, or worn from regular use.

This is a fastener bolt designed for use in string trimmers and other outdoor power equipment. It secures internal components to maintain structural integrity during operation. Replace this bolt if it is stripped, corroded, or missing - which can cause excessive vibration, loose parts, or unsafe operating conditions.

This is a split boom coupler that connects the upper and lower shaft sections of a string trimmer with a detachable split-boom design. It locks the two boom halves together securely so the drive shaft can transmit power to the trimmer head. Replace this coupler if the boom sections no longer lock together firmly, if the connection feels loose during use, or if the locking mechanism is broken or worn.

Fastening screw for lawn mowers, snow throwers, and trimmers. Secures components together. Replace if stripped, corroded, or missing during repairs.

Replacement bolt for line trimmers and snow throwers. Secures internal components and housing. Order when original is stripped, missing, or damaged.

Lower boom assembly for gas line trimmers. Connects the engine housing to the cutting head. Replace if cracked, bent, or damaged from impact. Essential structural component.

Lower flexible drive shaft for line trimmer attachments. Mounts inside the lower boom housing to drive the trimmer head. Replace when worn round or cracked.

Fastener hardware set for line trimmers. Replace missing, stripped, or damaged screws and nuts that secure internal components. Sold as individual set.

This is a genuine replacement for the line trimmer gearbox on select outdoor power trimmers. The gearbox is the housing that holds the gears responsible for turning the line reel. When the line reel turns, the string cuts grass and weeds. This part is made of durable metal, but it is also exposed to the elements and a lot of constant vibration, so it can become damaged over time and will need to be replaced. If the trimmer head stops spinning or there is a sudden grinding noise, it could indicate that this part needs replaced. It's important to use an OEM replacement for best results. This unit is sold as a complete assembly and includes the mounting hardware, three screws, head assembly, and the cap. A hex screwdriver, socket or wrench set, and Phillips screwdriver will be necessary to replace this part. Be sure to allow the unit to cool and wear gloves whenever performing repairs.This genuine OEM line trimmer gearbox is manufactured by MTD and compatible with machines from Craftsman.

Mounting screw for line trimmers and hedge trimmers. Secures components to the housing or engine assembly. Replace if stripped, missing, or damaged.

Blade guard assembly for line trimmers. Protects operator from debris and rotating components. Replace if cracked, broken, or missing for safe operation.

Replace your gas line trimmer's worn or broken head assembly. This component houses the cutting line spool and installs at the trimmer shaft end.

This tube line is a genuine MTD part, sold individually. This tube line can be used as a replacement part for string trimmers. The function of the tube line for a string trimmer is to spool out of the trimmer head assembly and rotate such that it can cut through grass, hedges, bushes, and other greenery. Over the standard lifespan of an average string trimmer, the tube line might suffer damage that can stop it from rotating and cutting properly. If the tube line is knotted and cannot be unspooled from the head assembly, it can be repaired. However, if this happens frequently or if the problem is not solvable with the existing tube line, the broken or malfunctioning tube line should immediately be replaced by this genuine OEM replacement part before using the string trimmer again. Remember to wear gloves when handling, repairing, and operating outdoor equipment. This is an OEM part sourced directly from the manufacturer, and it is sold individually. This tube line is compatible with the following brands: MTD and Craftsman.