Nik's Poulan Thread

[LegDeLimber]

Just a drive by post, have to look for answers later.

Is this actually diaphragm stock or gasket stock.
If it is diaphragm stock Are you cutting something to a certain shape
and then maybe some screw holes too?
Any flaps, sorta like the valve side of a carb?

and if it is a diaphragm then what about gaskets.

I'm ok with some basic cutting and hole punching.
got a small set of punches and one of those handy-dandy wheel type multi size punches
of course a couple of common office type paper punches
a set of Exactos , some sharp scissors.

been cutting gasket stock since the 70's due to small engines and motor cycles
so don't mind the job, just not up to speed on what the oiler requires.

An early 80's Craftsman 3.7 is my reason for asking all this.
oiler may be ok but still need going to need to know this stuff for keeping it going.

then lastly, what manner of payment works in this deal if a fellow aint got paypal?

realize it's a handfull of questions, but would be good to know if this is something
that I need to figure out a way throw in on the group buy.

may be later today or tonight before I get to look back here.
and Thanks for any info!

 

[67 Mustang]

Does that mean you're in Bob?

Joe25DA, are you in? Not sure if the +1 meant yes or no.

Added you to the list Steve.

You're a great asset to the Poulan collectors, Tim. I really appreciate your efforts in sourcing this material. Looks like it's turning into quite a task. :yourock:

 

[67L36Driver]

You might want to get a hold of Joe Salva and see where he gets his material for the obsolete carb kits he makes up.

Joe makes an excellent gasket & diaphram kit for the Carter ND .:msp_thumbsup: NLA anywhere else.

I'm not shure what you fellas are making but he could possibly produce it in a reasonable volume.

Search 'Sugar Creek Supply'.

 

[fossil]

Alright count me in too.

You're on the list Aaron and that's all the material bought up unless we want to buy a larger quantity.

 

[fossil]

Just a drive by post, have to look for answers later.

Is this actually diaphragm stock or gasket stock.
If it is diaphragm stock Are you cutting something to a certain shape
and then maybe some screw holes too?
Any flaps, sorta like the valve side of a carb?

and if it is a diaphragm then what about gaskets.

I'm ok with some basic cutting and hole punching.
got a small set of punches and one of those handy-dandy wheel type multi size punches
of course a couple of common office type paper punches
a set of Exactos , some sharp scissors.

been cutting gasket stock since the 70's due to small engines and motor cycles
so don't mind the job, just not up to speed on what the oiler requires.

An early 80's Craftsman 3.7 is my reason for asking all this.
oiler may be ok but still need going to need to know this stuff for keeping it going.

then lastly, what manner of payment works in this deal if a fellow aint got paypal?

realize it's a handfull of questions, but would be good to know if this is something
that I need to figure out a way throw in on the group buy.

may be later today or tonight before I get to look back here.
and Thanks for any info!

The material is a nylon inserted nitrile material made specifically for diaphragms. It is 0.017" thick which is the thickness of an OEM Poulan oiler diaphragm. The same material is used by a member on here to make carb diaphragms but in 0.010" thickness and they work well. I am making the assumption that this material will work and sure as heck hope it does. The diaphragms are NLA in any place I've looked.
The diaphragms are simple to make. I have tried to make some out of neoprene but they only worked slightly at high no load speeds.

All you would need are a set of punches and I suspect $5 leather punch would work. There are 4 holes that would accomodate a 10-24 screw and asmall hole around 1/16" for the impulse hole. There are two additional smaller holes that are a little tougher to make that locate the diaphragm on the pump body. The diaphragm can be trimmed once it is sandwiched in the pump.
Using the original diaphragm to make a template works well.
The material is all bought up now and unless we can get 5 more people interested there won't be anymore. If it does work out OK, I would be happy to send you a diaphragm to have as a spare once I get the material. The gasket, if required, is just a paper gasket which should be fairly easy to make.

 

[fossil]

You're a great asset to the Poulan collectors, Tim. I really appreciate your efforts in sourcing this material. Looks like it's turning into quite a task. :yourock:

Happy to give back for all the help, advice and comraderie I get from this thread. Unfortunately I may have to involve someone else due to the shipping. I don't want to burden anyone else with this but I may have to.
Let's hope it works. I guess if if doesn't I'll have to change my user name to Old MUD

 

[dboyd351]

Happy to give back for all the help, advice and comraderie I get for this thread. Unfotunately I may have to involve someone else due to the shipping. I don't want to burden anyone else with this but I may have to.
Let's hope it works. I guess if if doesn't I'll have to change my user name to Old MUD

If you want help with the shipping, let me know. Might be cheaper to re-ship from the US anyway.

 

[hemiyota]

I lucked onto an NOS piston and cylinder, for a 3700, too. Shame there weren't rings with them.....

Actually, I had never checked the part numbers. I just assumed it was a 3700 because it was thin rings. I went and checked, and it's a 4000 piston and cylinder....530010643 and 530012068......

 

[fossil]

If you want help with the shipping, let me know. Might be cheaper to re-ship from the US anyway.

Thanks David. That's very kind of you.

 

[redunshee]

Actually, I had never checked the part numbers. I just assumed it was a 3700 because it was thin rings. I went and checked, and it's a 4000 piston and cylinder....530010643 and 530012068......

Dang you

 

[redunshee]

Just a drive by post, have to look for answers later.

Is this actually diaphragm stock or gasket stock.
If it is diaphragm stock Are you cutting something to a certain shape
and then maybe some screw holes too?
Any flaps, sorta like the valve side of a carb?

and if it is a diaphragm then what about gaskets.

I'm ok with some basic cutting and hole punching.
got a small set of punches and one of those handy-dandy wheel type multi size punches
of course a couple of common office type paper punches
a set of Exactos , some sharp scissors.


been cutting gasket stock since the 70's due to small engines and motor cycles
so don't mind the job, just not up to speed on what the oiler requires.

An early 80's Craftsman 3.7 is my reason for asking all this.
oiler may be ok but still need going to need to know this stuff for keeping it going.

then lastly, what manner of payment works in this deal if a fellow aint got paypal?

realize it's a handfull of questions, but would be good to know if this is something
that I need to figure out a way throw in on the group buy.

may be later today or tonight before I get to look back here.
and Thanks for any info!

The oiler pump diaphragm only has three holes for the screws, if I remember correctly. Yea, its three. Will have to have an old one to use as a guide. Should be simple enough.

 

[fossil]

The oiler pump diaphragm only has three holes for the screws, if I remember correctly. Yea, its three. Will have to have an old one to use as a guide. Should be simple enough.

There's actually a 4th hole, same size. It's for the self tapping screw that holds the oil pump together. The upper left one if I recall correctly. (well that's a lie. I looked.)

 

[redunshee]

The material is a nylon inserted nitrile material made specifically for diaphragms. It is 0.017" thick which is the thickness of an OEM Poulan oiler diaphragm. The same material is used by a member on here to make carb diaphragms but in 0.010" thickness and they work well. I am making the assumption that this material will work and sure as heck hope it does. The diaphragms are NLA in any place I've looked.
The diaphragms are simple to make. I have tried to make some out of neoprene but they only worked slightly at high no load speeds.

All you would need are a set of punches and I suspect $5 leather punch would work. There are 4 holes that would accomodate a 10-24 screw and asmall hole around 1/16" for the impulse hole. There are two additional smaller holes that are a little tougher to make that locate the diaphragm on the pump body. The diaphragm can be trimmed once it is sandwiched in the pump.
Using the original diaphragm to make a template works well.
The material is all bought up now and unless we can get 5 more people interested there won't be anymore. If it does work out OK, I would be happy to send you a diaphragm to have as a spare once I get the material. The gasket, if required, is just a paper gasket which should be fairly easy to make.

Completely forgot about the small pin holes and ur right there are four screw holes, 1 to attach the cover and the other three to attach the pump to the saw.

 

[fossil]

"S" clip bar/ stud spacer alternative.

I found an easier solution to the bar stud "S" clip spacer for 3/8" slot bar on 5/16" studs.

Not an original thought but easy to come by.

I bought a 3/8 tension spring at Home Depot.

Wire dia 0.0285"
Spring ID 0.303"
Spring OD 0.372"

I cut a couple of pieces of around 0.175" long (the bar is 0.185" thick for a Windsor).

They slide right on the studs, have less play than the Windsor "S" clip and the bar slides on easier. The spring was 1-7/8" long for $2

The spring material should be hard enough to last and much simplier to make than the wiper blade spring steel.

Both work well.

That's my exitement for Friday night.

 

[fossil]

Completely forgot about the small pin holes and ur right there are four screw holes, 1 to attach the cover and the other three to attach the pump to the saw.

I only know since I spent a bunch of time trying to make a diaphragm that would work. Don't ask me tomorrow because I'll have likely forgotten by then.

 

[redunshee]

I only know since I spent a bunch of time trying to make a diaphragm that would work. Don't ask me tomorrow because I'll have likely forgotten by then.

Let me know if you want help with shipping or for front $

 

[Modifiedmark]

I only know since I spent a bunch of time trying to make a diaphragm that would work. Don't ask me tomorrow because I'll have likely forgotten by then.

Like I said, I have a few nos diaphragms, I could put one on the scanner for a pattern...............

 

[Modifiedmark]

good info, this is my high point of the day....never seen one of these before....chrome cylinder and aluminum piston...found its way from South Carolina to a trailer park in Michigan....:hmm3grin2orange: PP 375 Bow saw. The little Mac and Craftsman were a buck each at a yard sale!

View attachment 300211

Nice finds!

Bad thing is you paid wayyyyy to much for the Mac.

 

[jerrycmorrow]

The oiler pump diaphragm only has three holes for the screws, if I remember correctly. Yea, its three. Will have to have an old one to use as a guide. Should be simple enough.

What saw are we talkin bout? Anyway?

 

[LegDeLimber]

Appreciate the answers on the diaphragms.

Is there a practical way to chip in on a buy?
money orders ? Cash tucked into a card?
or A pound of unground Black pepper corns (you'll never! go back to that flavorless pre-ground dust).