The Oregon ones work well. They likely made the ones Poulan used. If you have any trouble let us know and I will pull a clutch on one of mine to see what's in there.
What was orig color?
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Took the old drum off and spun the new on hand tight, all I do with threaded clutches. The new drum is about an 1/8 less deep. The clutch comes right up to the edge of the drum But is inside it except this one corner of one shoe. Just the very corner hangs out by a mm or less. Maybe that one shoe is on spider crooked? I will look at in depth later.The Oregon ones work well. They likely made the ones Poulan used. If you have any trouble let us know and I will pull a clutch on one of mine to see what's in there.
I've seen several drums the have a raised half dollar sized section on the interior of the drum. Just enough to make it unusable . Check yours.Took the old drum off and spun the new on hand tight, all I do with threaded clutches. The new drum is about an 1/8 less deep. The clutch comes right up to the edge of the drum But is inside it except this one corner of one shoe. Just the very corner hangs out by a mm or less. Maybe that one shoe is on spider crooked? I will look at in depth later.
I have an Oregon drum on the shelf that I can measure for you if you need. It is the NLA 3400-4000 rim setup. All of mine that I swapped over fit well. Spin that clutch on tight. These clutches have a habit of getting away from you if you ever blip the throttle without a bar and chain.Took the old drum off and spun the new on hand tight, all I do with threaded clutches. The new drum is about an 1/8 less deep. The clutch comes right up to the edge of the drum But is inside it except this one corner of one shoe. Just the very corner hangs out by a mm or less. Maybe that one shoe is on spider crooked? I will look at in depth later.
I noticed a raised section on mine but it is really close to fitting. The back of the drum isn't flat either.I've seen several drums the have a raised half dollar sized section on the interior of the drum. Just enough to make it unusable . Check yours.
I have an Oregon drum on the shelf that I can measure for you if you need. It is the NLA 3400-4000 rim setup. All of mine that I swapped over fit well. Spin that clutch on tight. These clutches have a habit of getting away from you if you ever blip the throttle without a bar and chain.
Nothing like a clutch spinning off, rocketing across the floor and up the wall to get your attention. Best be wearing your brown pants.
Not fun when ya goose it and that sucker unthreads and sits there like a dragster doing a burn out til it gets traction and takes off, and you dare not touch it, been there and done that, fingers were sore for days.
Steve
I noticed a raised section on mine but it is really close to fitting. The back of the drum isn't flat either.
I will put a socket on the clutch and get it a little tighter.
Poulan 3400-4000 oil pump diaphragm material
I have contacted my supplier to see if any more of the nylon insert nitrile is available that folks have used to punch out new oil pump diaphragms for the 3400-4000 series oilers. The material works very well and another member and I have successfully used the material to rebuild the diaphragms on s25da series as well. It likely could be adapted to other impulse driven pumps. Other folks used similar material from a different supplier, but at the time, had to be ordered in larger amounts. The nominal thickness of the sheet stock is 1/64" (0.015-0.017") and is made in Canada.
I can pick up smaller amounts, as a little goes a long ways. If the order is divided up, one should be able to have enough to make several diaphragms for a reasonable cost < $20).
I can pay for the order up front, collect and mail out of Canada.
PM me if you are interested. I just want to get an idea who might want some so I can let the supplier know.
wow.....I lost my sears saw in a barn fire....replacing it is what started me into this insane hobby. I now have 70 or so saws, but only one 4.2 and it is green. Of course the red is more fun. People call them crapsman, hand them the saw and tell them to make a couple cuts. The look on their face is priceless.Craftsman 4.2 (Poulan 4200). Got it not too long ago for $35, needed new piston and rings which are still available, cleaned it up, painted the muffler, replace crank seals, new fuel line, good to go!
oh my that is purty.View attachment 540575
I always like that pic......, in any thread.
Let me know what your schedule is so I can pull those pumps.Same here Cory!
I'm saving my last little bit for Bob R's S25DAs oiler rebuilds, whenever I can get back down to Texas again to pick them up
I'm in as well.You know I'm in, just let me know
Poulan 3400-4000 oil pump diaphragm material
I have contacted my supplier to see if any more of the nylon insert nitrile is available that folks have used to punch out new oil pump diaphragms for the 3400-4000 series oilers. The material works very well and another member and I have successfully used the material to rebuild the diaphragms on s25da series as well. It likely could be adapted to other impulse driven pumps. Other folks used similar material from a different supplier, but at the time, had to be ordered in larger amounts. The nominal thickness of the sheet stock is 1/64" (0.015-0.017") and is made in Canada.
I can pick up smaller amounts, as a little goes a long ways. If the order is divided up, one should be able to have enough to make several diaphragms for a reasonable cost < $20).
I can pay for the order up front, collect and mail out of Canada.
PM me if you are interested. I just want to get an idea who might want some so I can let the supplier know.
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