Specs for Oregon Bar

[Aussie MacGyver]

Howdy All

Well after getting my Pioneer 650 running (not the best but that is another story) I want to know what kind of bar and chain I have on my saw.

Details are: Oregon - 2058B1931SB under that is 17826.

Can anyone elaborate on these numbers?

cheers
Scott

 

[ozflea]

Bar spec's could be in line with the following :
Bar length / chain gauge / and if fitted with a sprocket nose there's a couple of different pitches to consider, thats about it no dramas.

Mc Bob

 

[Aussie MacGyver]

So 20inch length, 5/8inch gauge?

cheers
Scott

 

[Lawn Masters]

oh my god no. the gauge isnt 5/8" its .058. there is a HUGE difference there. read around you'll learn an incredible amount about this. I'm betting its 3/8 pitch chain, since .404 hasnt been made in .058 gauge since the 80's I think, maybe the 70's.

 

[ozflea]

So 20inch length, 5/8inch gauge?

cheers
Scott

Chain is in 3 different gauges .050 / 058 / 063.
Thats the width of the grove.
You would need to check for wear as well.

Mc Bob.

 

[retoocs555]

I'm pretty sure all the older pioneers like that had .404 chain. I know my 620 did.

 

[Aussie MacGyver]

Specs say it should be .404. What does this refer to? Sorry this is my first chainsaw and it is all just numbers so far. Can't seem to get the mind to 'click', if you know what I mean.

cheers
Scott

 

[retoocs555]

.325 3/8 .404 All refer to a chain's pitch. It's easiest to think of it as the size of the drive link. .404 is larger than 3/8 and because of that the drive sprocket is only capible of working with one pitch, any other pitch won't line up right on the sprocket. Same holds true for sprocket noses on bars they are pitch specific.

 

[gatkeper1]

In this case the bar number is 17826
20" armor tip hard nose bar
3/8" x .058
73LP chain 70 drivers

 

[retoocs555]

It could still be .404 chain with the hardtip bar though.