Chainsaw Repair

Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Poulan => Topic started by: Cut4fun on November 23, 2013, 02:50:11 pm

Title: Poulan 9/16 srench bar nuts
Post by: Cut4fun on November 23, 2013, 02:50:11 pm
Was trying to find some extra poulan 9/16 bar nuts with what seems like coarse threads today.   Anyone got a lead on them or part number?  I'm coming up with this  530015251   but want to make sure they are the right ones.

I always just used a 9/16" ratchet, never seen a swrench in the 9/16 or maybe I am just not paying attention.  530031146
Title: Re: Poulan 9/16 swrench bar nuts
Post by: 660magnum on November 23, 2013, 02:58:44 pm
You try flange nuts from the hardware?
Title: Re: Poulan 9/16 swrench bar nuts
Post by: Cut4fun on November 23, 2013, 03:00:31 pm
You try flange nuts from the hardware?

Duh on me. Thanks for the idea.    Local Hockler has a great selection and I can usually match up anything in the past.  Totally slipped my mind.
Title: Re: Poulan 9/16 swrench bar nuts
Post by: Eccentric on November 23, 2013, 03:08:52 pm
Make sure you get the smooth faced flange nuts.  Most hardware store flange nuts are serrated.  They chew the hell out of a magnesium clutch cover.  The Poulan (and some medium sized Homelite) nuts are 5/16-18, with a 9/16" hex.  You'll probably find that most 5/16-18 flange nuts have a 1/2" hex.

As for a 9/16" scrench.......................Oregon still makes/sells them.  They're labeled as being suitable for Echo and Poulan.  19mmx14mm.  Part # 57-006.  They're also the ticket for large frame McCulloch chainsaws, as those also used 9/16" bar nuts (but fine thread 3/8).  Large frame McCullochs use 3/8-24 nuts with a 9/16" hex.

http://www.ebay.com/itm/Oregon-57-006-19-by-14-mm-Chain-Saw-Scrench-/321186288921?pt=LH_DefaultDomain_0&hash=item4ac831d519

http://www.ebay.com/itm/SCRENCH-19MM-X-14MM-57-006-/390556269395?pt=LH_DefaultDomain_0&hash=item5aeef7bb53



These would work fine on a Poulan...................but I think they have a 1/2" hex.  That combination (5/16-18 with a 1/2" hex) was used on many medium sized Homelites.

http://www.ebay.com/itm/Quarter-Midget-5-16-18-NON-Serrated-Flange-Nuts-40-PK-/320730313747?pt=Race_Car_Parts&hash=item4aad043413&vxp=mtr
Title: Re: Poulan 9/16 swrench bar nuts
Post by: Cut4fun . on November 23, 2013, 03:16:34 pm
Very Cool.  Thanks for all the info.

I have a super heavy duty swrench that Al Smith made me for dolmar 166 bar nuts if anyone of you have a use for it.  I have a stock one now and dont need 2.  Thinking 17mm maybe?


I may have that one already.  :P :P :P   http://www.ebay.com/itm/Oregon-57-006-19-by-14-mm-Chain-Saw-Scrench-/321186288921?pt=LH_DefaultDomain_0&hash=item4ac831d519
Title: Re: Poulan 9/16 swrench bar nuts
Post by: 660magnum on November 23, 2013, 03:17:05 pm
Kevin, the flange nuts I bought for my 372's at the hardware above my house towards town were smooth. Couldn't tell them from Husqvarna.
Title: Re: Poulan 9/16 swrench bar nuts
Post by: Cut4fun . on November 25, 2013, 04:52:39 pm
I was able to take a sec and check the one I bought for the 166.  It was 17mm and 19mm.  So thanks for the link on the 14mm swrenches.
Title: Re: Poulan 9/16 srench bar nuts
Post by: fastleo151 on November 25, 2013, 09:22:37 pm
I change mine to 1/2....
Title: Re: Poulan 9/16 srench bar nuts
Post by: 660magnum on November 25, 2013, 09:47:47 pm
Glenn's has a big assortment of screnches
Title: Re: Poulan 9/16 srench bar nuts
Post by: Cut4fun . on November 26, 2013, 01:58:29 pm
I change mine to 1/2....

I tried that, but the new husky bar nuts wouldnt go on the poulan bar stud threads.   ???   I didnt check the thread difference of the studs, but figured something was up with that.   
I just said freak it and put the 9/16 back on.
Title: Re: Poulan 9/16 srench bar nuts
Post by: Eccentric on November 27, 2013, 04:18:27 pm
I change mine to 1/2....

I tried that, but the new husky bar nuts wouldnt go on the poulan bar stud threads.   ???   I didnt check the thread difference of the studs, but figured something was up with that.   
I just said freak it and put the 9/16 back on.

The metric thread Husky nuts won't work on the Poulan studs, despite being 1/2" hex (actually 13mm..............but that's close enough to the 12.7mm that 1/2" actually is to work with a 1/2" or 13mm scrench).

The Poulan studs are 5/16"-18.......same as Homelite E-Z/Super E-Z and XL-101 series saws.  The Poulans have a 9/16" hex, while the Homelites have either a 5/8" or 1/2" hex. 

5/16-18 nuts flanged (with a 1/2" hex) are relatively easy to find, although they're usually serrated.  Smooth faced nuts are the way to go.  Be careful to not buy locknuts.  Do you have a Fastenal near you?  They'll have the nuts you need.

Here's an ebay listing for the right nuts.  They'll have a 1/2" hex.  Most 5/16-18 flange nuts found in an ebay search are either serrated, locknuts (either stover or nylock type), extremely expensive, or a combination thereof...

http://www.ebay.com/itm/Quarter-Midget-5-16-18-NON-Serrated-Flange-Nuts-40-PK-/320730313747?pt=Race_Car_Parts&hash=item4aad043413&vxp=mtr

McCulloch 10-series saw studs are 5/16"-24 with a 1/2" hex.  They won't work on a Poulan or small stud Homelite because of the thread pitch difference.
Title: Re: Poulan 9/16 srench bar nuts
Post by: Cut4fun . on November 27, 2013, 04:34:24 pm
You the man, Aaron.   Thanks for the explaining.  Coarse thread 18. I thought so. 
Title: Re: Poulan 9/16 srench bar nuts
Post by: Eccentric on November 27, 2013, 05:23:14 pm
(http://i171.photobucket.com/albums/u318/Eccentric_photo/Poulan%20Chainsaws/photobucket-18451-1347849750434.jpg)
(http://i171.photobucket.com/albums/u318/Eccentric_photo/Poulan%20Chainsaws/photobucket-21039-1347849755654.jpg)

This is the 3400 that I put and 'S' stud spacer, bar plates (slightly modified), and 5/16"-18 (5/8" hex) bar nuts from an early Homelite Super XL-12 onto.  It's also wearing a chainbrake clutch cover that came all the way from a friend in Australia to me.  Sold the saw on ebay (wish I'd kept it, but the $$$ helped last Christmas).  I kept the chainbrake cover (now on my 4000), 'S' spacer, and Homelite bar nuts.  Discovered that 1/2" or 9/16" hex nuts work better on the 3400-4000 Poulans as there's not much clearance between the larger 5/8" hex and the clutch cover (on the rear stud).

(http://i171.photobucket.com/albums/u318/Eccentric_photo/Ebay%20Chainsaws/photobucket-4761-1355115834008.jpg)

Same saw after being stripped of the 'keeper' stuff.  The MMMM (ModifiedMark Muffler Mod) visible here.  Interesting that the Homelite bar plates work fine with the addition of a slot (on the outer plate) for the adjuster peg.  The Homelite has the adjuster in the bar pad, while the 3400-4000 Poulan has it in the clutch cover.  A 306/245 or 361-451 Poulan could probably use the Homelite bar plates (early 5/16" stud versions that is) as-is, as their adjuster is in the bar pad.  Going off on a tangent here......

(http://i171.photobucket.com/albums/u318/Eccentric_photo/Poulan%20Chainsaws/photobucket-12558-1347849754061.jpg)
Title: Re: Poulan 9/16 srench bar nuts
Post by: Al Smith on November 27, 2013, 07:37:47 pm
You tell me the exact size I'll find some at work. 9/16" head would normally be 3/8" 16 or 24 depending on the thread pitch .
Title: Re: Poulan 9/16 srench bar nuts
Post by: Eccentric on November 27, 2013, 10:44:46 pm
You tell me the exact size I'll find some at work. 9/16" head would normally be 3/8" 16 or 24 depending on the thread pitch .

If they're Poulan bar nuts with a 9/16" hex, then they'll be 5/16"-18.  Weird, but that's what Poulan did....


Kevin could of course use 5/16-18 nuts with a 1/2" hex instead.


The larger Homelite XL series studs are 3/8-16.  Large frame McCulloch studs are 3/8-24.
Title: Re: Poulan 9/16 srench bar nuts
Post by: Al Smith on November 28, 2013, 08:38:02 am
I'm sure somebody sells those"mogul " nuts .Maybe MacMaster -Carr .We've got odd ball metric nuts hither and yon at work .Some with great big flanges for what ever reason .

Now I've made odd ball nuts and wierd bolts on the lathe and Bridgeport mill but it's a pain in the butt .An hour and a half for a 15 -25 cent  nut is not my idea of a good time .Some times though ya gotta do what you gotta do .