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Finish Nailer Repair - Replacing the Driver Guide (Ridgid Part # 79004001022)
Article Breakdown
Finish Nailer Repair - Replacing the Driver Guide (Ridgid Part # 79004001022)
Tools & Materials
Chainsaw need a checkup? It's time to face the fix. Whether you are a legendary lumberjack or a weekend woodworker, eReplacementParts.com provides the parts, procedures and facts you need to fearlessly fix what fails you.
The bar plate is made of metal and sits against the saw's housing (where the bar mounts). It can really be thought of as a guard. Its primary function is to strengthen the area where the bar mounts. The saw's plastic housing would quickly wear from the movement (and heat) of the bar if the bar plate weren't there.
A secondary function of the bar plate is to help route bar oil to the guide bar. Damage to the bar plate is usually caused by a chain that is tensioned too loosely, or by a bar that is worn (so the chain doesn't track straight across it.) The result (of either condition) is the chain rubbing against the bar plate until (eventually) a hole is worn into the plate.
This article provides step-by-step instructions for removing and installing the bar plate on a Poulan chainsaw.
Let's get started. REMOVING THE BAR PLATE [top] 1. Remove the clutch cover assembly.
Remove the (2) nuts from the bar mounting bolts.
Rotate the chain tensioner screw counterclockwise to release tension from the chain.
Remove the clutch cover assembly.
2. Remove the bar and chain assembly.
Remove the bar and chain assembly from the saw.
3. Remove the bar plate.
Use a small screwdriver (if needed) to pry the bar plate away from the plastic housing.
Remove the bar plate from the saw.
INSTALLING THE NEW BAR PLATE [top] 4. Install the bar plate.
Slide the new bar plate over the bar bolts.
Press the bar plate firmly against the plastic housing until the locking tab engages the bolt.
Press the blade of a screwdriver against the metal tab.
Tap the end of the screwdriver with a small hammer (or another screwdriver) to seat the metal tab (and secure the bar plate).
REASSEMBLING THE UNIT [top] 5. Reinstall the bar and chain.
Lay the guide bar on a flat surface.
Install the chain onto the guide bar; ensuring that the sharp side of the teeth (along the bottom of the chain) are facing the saw.
Partially install the bar and chain assembly onto the saw, ensuring that the chain engages the drive sprocket on the clutch drum.
Continue installing the bar (and chain) over the bar bolts.
Pull the bar assembly forward (away from the engine) to align the drive links (on the chain) with the groove in the bar.
6. Reinstall the clutch cover assembly.
Install the clutch cover assembly.
Apply (side) pressure to the clutch cover assembly.
Using a long screwdriver, rotate the tensioner screw (in either direction) until the bar adjustment pin engages the hole on the bar. (The entire assembly should snap into place when this occurs).
Once the adjustment pin engages the bar; rotate the tensioner screw in the opposite direction until the chain begins to tension.
Install and hand-tighten the bar nuts.
7. Tension the chain.
Grasp and raise the distant end of the bar and chain assembly (opposite the engine) until the saw begins to rise.
While holding the bar in the raised position, grasp the chain at the center (and top) of the bar.
Lift the chain away from the bar assembly and inspect the gap between the two components.
The chain is tensioned correctly when the weight of the chain does not cause it to sag below the guide bar.
Rotate the tensioner screw (as necessary) to tighten or loosen the chain until it is correctly tensioned.
Tighten the bar nuts to secure the clutch cover assembly.
Do-it-yourself repairs like these are easier than you might think: From lawn machines to cordless drills, kitchen mixers to outdoor grills. Our "how-to" articles walk you through each repair from start to finish.
So, doing-it-yourself means never having to do it alone.