Some of the newer clamshell Poulans like a starting point of 2 turns out on both needles. They seem to land around 2-1/4 on the high and 2-/1/2 on the low.
Nik's Poulan Thread
- Thread starter FATGUY
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For the 3400 series try a piece of 1/2" copper water pipe. Works well.
Bobby Kirbos
Scrounger of Cellulose Based BTUs
I'll take both awards, both are nice.
Done
Very nice, glad I taught you how it's done
Looks great!
Haha and fossil too thanks guys. Dremal block of wood and a flat head no heat was needed
How much end play is ok? Ive got probably 2mm and slight up and down
2mm=.078 not sure if that is ok. .020 would be more better
Once my spike screws show up. Very hard to get these things in a small metric country
Hmmmm maybe its rebuild time
Up down is OK as long as it's around .005" or 0.13 mm. The drawn cup needle bearings tend to be sloppy. It may feel like more than it is so if you can check it with a dial indicator that would be good. Same check on the lateral play as it often feels like more.
Too much lateral play is bad on the 4000's as the piston can start to contact a sharp edge on the saw case and will cut a groove in the piston on the back side. I've seen a few like that.
Best to check it.
Changing lateral play is a pain in the butt and one of the few things on those saws that is. There are two bronze thrust washers between the crankshaft throws and the bearings. Sometimes they wear out. They were worn on my 4000.
The lateral play is set by the depth of the bearings in the saw case and they are a pain to get in the right place. Poulan made a gauge to set those but I don't have one.
Through trial and error I have set mine so the rod is centred and the lateral play is between 0.20 mm and and 0.46 mm.
Bearings are common BH-108 full compliment and so are thrust washers. PN. 530015354.
Ok cheers its enough play when ya tip the saw side to side the crank go's clunk clunk. I'll have a measure and see what I've got tonite. Thanks for the info
Sounds like a good bit to go clunk clunk.
Steve
Steve
You can pull the seals and make a driver .630 x .870 and tap the bearings in a little bit. Or you can split the case
I was wondering if that trick was possible seems an easy way
Its at about 1.2mm end play
What's that in US standards?
Steve
Steve
Just check, 47.244 thousandth, kind of high.
Steve
Steve
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