RY253SS (090333003) Ryobi Trimmer - Overview

Diagrams for RY253SS

See every part. Know exactly what you need.

Figure C

Parts for the RY253SS

$24.63

STRAIGHT SHAFT ASSEMBLY

Part #308035047

Strange noise, strong shaking, or a cutting head that stops turning can point to a worn shaft assembly. The outer tube supports and protects the inner drive cable. Together, they carry power from the engine to the trimmer head. First remove grass and dirt from the head. Then check the clutch, drive cable, gear case, and connection points ...Read more

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Hanger Cap

Part #518019002

Trimmer String Head Adapter

★★★★★

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Part #678019002

Genuine OEM replacement part, this part is sold individually. This part is where the stringhead assembly is mounted on the Trimmers shown below. It attaches to the spindle. The thread mount on the spindle is a left hand thread.

$6.40

SPRING

Part #679958001

This spring is a genuine OEM replacement part supplied directly from the manufacturer. It is designed for use in various models of Ryobi string trimmers. This coil type compression spring is placed inside the string head housing. It is made of metal and sold individually.

$32.02

Gear Head

Part #308210009

This Gear gear head assembly is designed to transfer power from the drive shaft to the cutting head, allowing the string trimmer or brush cutter to operate smoothly and efficiently. Housed in a durable gearcase, it supports reliable rotation and helps maintain consistent cutting performance during use. Replacing a worn or damaged gear hea...Read more

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$6.40

Wing Nut

Part #660886001

This replacement wing screw is a genuine OEM sourced item, it is not an aftermarket imitation. It is specially designed for Homelite and Ryobi string trimmers and brush cutters. This hardware is generally used to secure the grass deflector. This screw is made from durable metal and it is sold individually.

$6.40

Spool Retainer (Red-LH Thread)

Part #308042003

This is an OEM replacement part. It has a left hand threaded screw to remove and attach it to the trimmer head. Its purpose is to hold the spool with the cutting line, in the spool housing. It also acts as the bumper to advance the line from the spool. This is a well used and abused part of the trimmer. It may be a good idea to order an extra one.

Spool Assembly

Part #310412005

String Head Assembly

Part #309562008

Genuine Ryobi replacement part, this assembly is sold individually. This is the part of the trimmers shown below that contains the cutting line,string head housing,spring and spool with the cutting line already installed in the spool. It is secured to the trimmer by using the 308042003 Spool Retainer (Red-LH Thread) which is threaded into the shaft. This is a dual line cutting head.

Grass Deflector

Part #308473001

String Guide

Part #526939001

Flanged Washer

Part #678011002

This flanged washer is an OEM sourced replacement part that is made for Ryobi and Homelite handheld string trimmers. The washer has internal gears that allow it to engage with the gear head shaft and the string head adapter. Over time it may wear out, get damaged or lost eventually requiring a replacement to ensure your trimmer operates p...Read more

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Repair Tips From Fixers Like You

See how others fixed this model. Time, tools, difficulty, and steps that lead to victory! View More

Replaced straight shaft, and the gear head.

6 of 8 people found this instruction helpful.

Tim from HOLLISTER, CA
Really Easy
30 - 60 mins
Socket set

Removed the 2 bolts holding the gear head to shaft. On my model I had to remove the complete trimmer head, then using 2 wrench take the trimmer head adapter off the gear heD. One video showed simply putting a screwdriver in the notch behind trimmer head and unscrewing complete head. Mine of course was slightly more involved but still qui ... Read more

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