Ryobi String Trimmer Parts | Same Day Shipping (2024)

Ryobi String Trimmer Line Cut-Off Blade

PartSelect Number PS16389742

Manufacturer Part Number 638016003

This OEM line cut-off blade trims any excess or protruding string from your trimmer during operation so that it stays at an optimal length within the guard. It is in the guard assembly at the bottom of the trimmer head near the rotating spool where the trimmer line is fed. Over time, it can become dull or worn out. Look for signs of damage such as deformation, bending, or nicks. If not replaced, the trimmer may produce uneven or messy trims and put additional stress on the spool or motor, leading to premature wear or damage. To replace the blade, locate it on the grass deflector assembly and remove its mounting screws. Please note that this blade is sold individually without hardware.

Ryobi String Trimmer Grass Deflector Assembly

PartSelect Number PS9939451

Manufacturer Part Number 310904001

Ryobi String Trimmer Push Cap

PartSelect Number PS9939772

Manufacturer Part Number 311153001

This depth restrictor push cap fastens the depth restrictor wheel in your edger, which serves to prevent you from setting the cutting depth of your machine too low. It acts as a safety feature that limits how deep the blade can go into the ground. Typically located near the motor housing on the bottom part of the edger, a damaged push cap may show visible deformations and cause the restrictor wheel to slip during operation. Without a functioning push cap, you risk setting the cutting depth too low, potentially damaging the edger or underground structures. To remove a damaged push cap, use a flathead screwdriver to gently pry it off, starting at one edge and applying even pressure. Please note that this OEM replacement part does not include the depth restrictor wheel.

Ryobi String Trimmer Spool Cap

PartSelect Number PS9966010

Manufacturer Part Number 522994001

This spool cap is for line trimmers.Spool cap covers the bottom of the line spool and prevents the spool from falling out of the spool housing.

Ryobi String Trimmer Bump Feed Trimmer Head Assembly (Inc. Key No. 21)

PartSelect Number PS16325548

Manufacturer Part Number 314608005

Ryobi String Trimmer Spool w/ Line

PartSelect Number PS9939455

Manufacturer Part Number 310917001

Ryobi String Trimmer Boom Clamp Assembly

PartSelect Number PS16325666

Manufacturer Part Number 315386001

Ryobi String Trimmer Bump Head Knob Assembly

PartSelect Number PS9306452

Manufacturer Part Number 791-153066B

This genuine bump head knob assembly, sometimes known simply as the bump head, is black and approximately 2 inches long. Sold individually, this plastic part releases the cutting line. Over time, this part may break due to wear, and you will know it is broken because it will completely stop functioning. A troubleshooting tip is to tap the part on theg round to see if the cutting line advances. This is an easy repair to make, and does not require any tools. You will need to look for the bump head attachment point on the bottom of the cutting head assembly.

Ryobi String Trimmer Fuel Line and Filter

PartSelect Number PS10014709

Manufacturer Part Number 791-682039

This OEM fuel line and filter supply fuel from the tank of your engine to its carburetor. Made of clear plastic and sold individually, the fuel line may end up clogged or cracked, causing fuel to leak as a result of general wear and tear. The filter may also end up damaged or clogged over time, and shold be replaced regularly as a part of proper engine maintenance. Luckily, this is an easy repair that requires no tools to carry out.

Ryobi String Trimmer Spark Plug

PartSelect Number PS10018287

Manufacturer Part Number 870174001

This spark plug is a genuine OEM part that is used on gas-powered lawn and garden equipment. It is a small cylindrical device in the engine cylinder head that creates the spark that ignites the fuel and air mixture inside the engine. It has a ceramic insulator, a metal rod, known as the center electrode, and a metal tab at its base, known as the ground electrode. The spark plug may fail due to a buildup of carbon, physical damage, or fouling. If it is faulty, your engine will misfire, consume more fuel, and have difficulty starting. To check that the spark plug is faulty, you can visually inspect it and use either a multimeter or a spark tester to check for electrical failure. Remove the faulty spark plug using a spark plug socket and ratchet. Use your hands to carefully thread the new spark plug into the engine. Regularly inspect and replace your spark plug as part of your general maintenance to keep your equipment in good condition.