Harman Feed Auger Shaft Assembly, 3-50-00565

This is the auger shaft assembly that moves the pellets from the hopper to the burnpot. We get a lot of people ordering the wrong shaft so please read this entire description or print off a copy of the PDF links at the bottom to compare against your stove's serial number to be sure you are getting the correct part.

Your owner's manual can be confusing because the older part numbers AND the updated part numbers are listed in the most current manuals. Some models had more than one change so there may be up to three (3) different auger shaft assembly part numbers for some models.

New stove and insert models introduced after 2009 all use the 3-50-00565 auger shaft assembly. Models are: 

• Accentra52i
• Accentra52i-TC
• Absolute43
• Absolute43-C
• P35i
• P35i-C
• P43
• P43-C
• Allure50
• Absolute63
• P61-C
• Accentra-Cast-C
• P68-C

Models that existed prior to 2009 phased over to this shaft assembly according to the following serial numbers:

Indirect UL Feeder Body Change: Indirect UL Tech Bulletin Dec. 12, 2008 - PDF

• Accentra-Cast Freestanding - Beginning serial number: 008400001
• Advance - Beginning serial number: 0083600001
• XXV - Serial numbers: 12871 thru 12939 and beginning 008200001

Direct UL Feeder Body Change: Direct UL Tech Bulletin Dec. 22, 2008 - PDF

• Accentra Insert - beginning serial number: 008240096
• P38 - beginning serial number: 008080620
• P61/P61A - beginning serial number: 008085092
• P68 - beginning serial number: 008280309
• PF100 Furnace - beginning serial number: 008350087

If you have the Advance, Accentra-Cast Freestanding (sometimes referred to as the Accentra 2), or an XXV that precedes the serial numbers above, you are going to have the older style indirect feed system (chain snd sprockets). The auger shaft assembly for your stove was originally part # 3-50-00365. This part number is now obsolete. The new part number is 3-50-00465

If you have the P38, P61, P61A, P68, or the PF100 Pellet Furnace with a serial number that precedes the list above, you are going to have the older style large feeder body system, and the correct auger shaft assembly will be 3-50-00465

Whenever an auger assembly is replaced, the auger feed motor should also be replaced. Replace these two parts as pairs. Here is a list of all of the different motors that are paired with the 3-50-00565 auger shaft assembly:

• Accentra-Cast Freestanding - Beginning serial number: 008400001 | Auger Motor: 3-20-00677
• Advance - Beginning serial number: 0083600001 | Auger Motor: 3-20-00677
• XXV - Serial numbers: 12871 thru 12939 and beginning 008200001 | Auger Motor: 3-20-00677
• Accentra Insert - beginning serial number: 008240096 | Auger Motor: 3-20-60906
• P38 - beginning serial number: 008080620 | Auger Motor: 3-20-60906
• P61/P61A - beginning serial number: 008085092 | Auger Motor: 3-20-60906
• P68 - beginning serial number: 008280309 | Auger Motor: 3-20-09302
• PF100 Furnace - beginning serial number: 008350087 | Auger Motor: 3-20-09302
• Accentra52i - 3-20-60906
• Accentra52i-TC - 3-20-60906
• Absolute43 - 3-20-00677
• Absolute43-C - 3-20-00677
• P35i - 3-20-60906
• P35i-C - 3-20-60906
• P43 - 3-20-60906
• P43-C - 3-20-60906
• Allure50 - 3-20-00677
• Absolute63 - 3-20-00999
• P61-C - 3-20-60906
• Accentra-Cast-C - 3-20-00677
• P68-C - 3-20-09302

• 3-50-00565

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Compatible Models

To replace the feed auger shaft:

1. Unplug your stove
2. If there are pellets in the hopper
3. Gain access to the rear of the stove
4. If your stove has a chain driven feed system, the chain will need to be removed by loosening the white tensioner block from under the chain to create slack and removing the left-side sprocket from the feed motor by loosening the 1/8" allan key screw in the hub of the drive sprocket
5. If you have direct drive (motor attached directly to the auger shaft), locate the 7/16" motor set screw on the roller cam assembly and loosen it. Disconnect the wires from the motor to the wiring harness and pull on the auger motor. The motor will uninstall with the mounting frame attached to the motor, set this aside.
6. Open the the fines collection box access door and remove
7. Lift on the feed plate pusher arm to extend the feed plate out of the feeder body weldment. Remove the feed plate. Sometimes the crossover hose may restrict the full motion of the pusher arm. If so, gently push the hose out of the way so that the pusher arm can be rotated up and fully to the left
8. Locate the two 1/2" hex screws on the mounting ring that hold the auger shaft in to the feeder weldment. remove these two screws, then remove the mounting ring. Note: different models have different way in which these mounting screws fasten to the weldment. If nuts or threaded couplers are used, locate them and set them, aside, they will be needed to secure the mounting ring again.
9. Pull the auger shaft from the feeder body. If the auger shaft is difficult to pull out, the shaft can be freed by striking the auger itself with a wooden dowel from inside the the firebox. This will break the seal and allow the auger to come out.
10. Install your auger shaft. Secure the mounting ring back into the stove and tighten the two hex screws to a uniformed torque (equal tightness)
11. Reinstall the feed plate and drop the pusher arm down
12. Reinstall the cam set screw assembly on the auger shaft, with secondary sprocket attached if your stove has a chain drive assembly
13. Reinstall the auger motor or sprocket assembly and connect to the auger shaft with the 7/16" set screw
14. Reinstall the drive sprocket and chain if you have a chain drive system and adjust the chain tensioner

Why would you need to replace your auger shaft? Typically, this is not a part that is replaced and it should last the life of your stove. That said, there are a few scenarios where the shaft will require replacement.

Some stove models made in 2006-2008 may have a "5-hole" burnpot. Harman made a change to the burnpot design in these two stove models. This change caused some problems that were not evident for many years later. The faulty burnpots will have 5 holes at the base of the slope, directly in front of the opening for the feed tube in front of the auger. These holes allowed the fire to burn too low and too hot in the burn pot resulting in the auger shaft actually melting away at the tip.

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