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  How to Replace the Upper Drive Shaft and Housing on a Ryobi Trimmer

Video

Tools & Materials

Fix Factor: Easy Duration: 20-25 minutes Frequency: As necessary Tools Required: Phillip's / Torx drivers, pliers, wrench and/or socket set Part #: 753-04344

How to Replace the Upper Drive Shaft and Housing on a Ryobi Trimmer

Replacing the upper drive shaft and housing on a Ryobi trimmer The Facts

Drive shaft damaged? It's time to face the fix. Whether you are a legendary landscaper or a weekend weed whacker, eReplacementParts.com provides the parts, procedures and facts you need to fearlessly fix what fails you.

The upper drive shaft (and housing) attaches to the engine on your trimmer. The opposite end attaches to the various accessories. The most common reason for replacing the upper drive shaft is damage (usually wear) to the coupling where the accessories attach. Replacing the shaft is easy to do.

This article will show you how to remove and install the upper drive shaft and housing on a Ryobi trimmer.

Let's get started.

The Fix   REMOVING THE UPPER DRIVE SHAFT [top] 1. Disconnect the accessory.

Loosen the adjustment knob.

Loosen the adjustment knob

 

 

Depress the locking tabs on the accessory.

Press the locking button

 

 

Slide the accessory out of the upper housing.

Remove the accessory

 

 

  2. Remove the throttle assembly.

Remove the (5) retaining screws from the throttle housing.

Remove the housing screws

 

 

Remove the (1) anti-rotation screw from the throttle housing.

Remove the anti-rotation screw

 

 

Separate the two halves of the throttle housing.

Separate the two halves

 

 

Remove the lower half of the throttle housing from the shaft.

Remove the lower housing

 

 

  3. Remove the upper shaft from the engine.

Remove the anti-rotation screw from the upper clamp assembly.

Remove the anti-rotation screw

 

 

Loosen the bolt/nut on the band clamp assembly.

Loosen the bolt on the clamp

 

 

Slide the band clamp assembly away from the clutch housing.

Slide the clamp away

 

 

Disconnect the upper drive shaft from the engine.

Disconnect the shaft

 

 

  DISASSEMBLING THE OLD SHAFT [top] 4. Remove the engine-side components from the old shaft.

Remove the spring from the end of the drive shaft.

Remove the spring

 

 

Remove the anti-rotation screw from the shaft.

Remove the anti-rotation screw

 

 

Remove the band clamp assembly from the shaft.

Remove the clamp

 

 

  5. Remove the handle.

Remove the anti-rotation screw from the lower handle clamp.

Remove the anti-rotation screw

 

 

Loosen the (4) screws on the upper handle clamp.

Loosen the screws

 

 

Slide the handle and clamp assembly off of the old drive shaft.

Remove the handle

 

 

  6. Remove the accessory clamp.

Remove the anti-rotation screw from the accessory clamp.

Remove the anti-rotation screw

 

 

Loosen the screw securing the accessory clamp to the shaft.

Loosen the clamp

 

 

Remove the accessory clamp from the old shaft.

Remove the clamp

 

 

  INSTALLING THE NEW DRIVE SHAFT [top] 7. Install the accessory clamp onto the new shaft.

Note that one end of the shaft contains a squared coupler (which connects to the trimmer attachments). The reverse end of the shaft housing contains a milled slit (through which the drive cable can be seen). The milled end attaches to the trimmer engine.

Note the different ends

 

 

Slide the accessory clamp onto the new shaft until the holes (for the anti-rotation screw) align.

Install the clamp

 

 

Install the anti-rotation screw onto the accessory clamp.

Install the screw

 

 

Tighten the accessory clamp screw.

Tighten the clamp

 

 

  8. Install the handle.

Slide the handle onto the new upper shaft until the holes (for the anti-rotation screw) align. Use the hole that is closest to the accessory clamp.

Install the handle

 

 

Install the anti-rotation screw onto the lower handle clamp.

Install the screw

 

 

Tighten the (4) screws on the upper handle clamp to secure the handle.

Tighten the handle

 

 

  9. Install the engine-side components onto the new shaft.

Install the anti-rotation screw (this screw prevents the inner cable liner from rotating).

Install the screw

 

 

Slide the band clamp accessory onto the new shaft.

Slide the clamp into place

 

 

Install the spring into the end of the upper shaft housing (the wider end of the spring should face the engine).

Install the spring

 

 

  10. Install the upper drive shaft onto the engine.

Slide the new drive shaft into the clutch housing. The milled slit on the drive shaft should face the fuel tank. The spring should fit around the clutch drum.

Install the shaft

 

 

Rotate the drive shaft until the holes for the anti-rotation screw align.

Rotate the shaft

 

 

Slide the band clamp onto the clutch housing and rotate the clamp until the holes for the anti-rotation screw align.

Slide the clamp into place

 

 

Install the anti-rotation screw onto the band clamp assembly.

Install the screw

 

 

Tighten the bolt/nut to secure the band clamp assembly.

Tighten the clamp

 

 

  REASSEMBLING THE UNIT [top] 11. Reinstall the throttle assembly.

Install the bottom half of the throttle housing onto the upper shaft.

Install the bottom half

 

 

Verify that the throttle trigger, spring and cable are neatly aligned within the housing.

Verify the alignment

 

 

Install the top half of the throttle housing.

Install the top of the housing

 

 

Secure the top half of the throttle housing with the (5) screws.

Secure the top half

 

 

  12. Reinstall the anti-rotation screw.

Install the anti-rotation screw. Note that there are two different mounting holes on the metal drive shaft housing. The anti-rotation screw should be installed into the hole that is closest to the trimmer's engine.

Install the anti-rotation screw

 

 

Secure the anti-rotation screw.

Secure the anti-rotation screw

  The Finish

You don't have to leverage your savings to level your lawns. As you just learned, repairing your own equipment is easy when you follow our step-by-step guides. Not only did you restore trimmer functionality at a fraction of the cost of replacement; you have taken the edge off of future repairs, wherever you may find them.

Find your next fix here.   [top]

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