Chainsaw Repair

I've been bucking firewood today.

When using these to block firewood, they both work the same way. They are just big and little.

But as discussed previously, the 21" X 8" bar is a brush clearing bar (the reason for the full guards) & often used to cut Christmas trees for market. The little bar has Oregon 3/8" LGX72 X 83 DL.

The larger 19" X 14" bow bar on the Husqvarna 371XP has Stihl 3/8" X .050" X 85 DL RSC.

Getting ready to put them away.

Small Bow Bar by General Chain Bar  is/was for sale on Ebay - presented here for documentation . . .

This is a rather small bow bar being apparently 20" overall length from one end to the other and 7" diameter at the tip.



In chainsaw terminology, this brush bar is most likely a 16" X 7" when measured from the end of the mounting slot to the outer tip. Looks sorta cute?

It has a 8mm slot and is supposedly set up for a MAC with a Oregon D276 pattern which fits some Poulans too? Notice the large oil hole and how it intercepts the chain groove?



The bar originally had two guard mounting holes top and bottom that were close together at the saw. The owner came across two like new longer guards and drilled two additional holes out close to the spike holes to make the bar more like the current Chain Bar Repairing design.



Below is how it originally looked without the extra guard holes. As you can see from this unpainted picture, the bar has good Stellite on the rails
It is hinted that this bar may be .058 gauge?

To use this bar on your 40 or 45 cc saw, the bar would be a good candidate to run Stihl PS or PS3 chain.



Keep in mind that though this is one of the smaller bow bars you will see, it has enough metal in the bar to throw your balance very bar heavy. In actual use this is almost immaterial as bow bars are typically used in the vertical position with most of the weight resting on the wood. 

If you are computer savvy, these pictures are as big as your screen if you rt click & nose around a little and you need to see them in more detail.

Nice information Jim.    It makes me want to convert one of my saws over to a bow.

That D276 bar was intended for 10-series Macs.  You could probably use it in a K041 mount Poulan such as a PP380.

Quote from: Eccentric on May 08, 2015, 02:13:16 pm

  You could probably use it in a K041 mount Poulan such as a PP380.

Roger owns a 3750 bow saw already  , he just fixed someone else's rednecking. 

After a little welding and a few spare parts here and there that saw sure does get the job done now.