Nik's Poulan Thread

[Jethro 2t sniffer]

It was said that the fuel tank is difficult to remove, tip of the day, fill it with hot water several times and it will soften up and come right out

That's a sneaky we trick

 

[hotshot]

I saw rings on ebay for it before i hit buy now dam it. Yea sad about the pistons mine will clean up fine theres only 1 little bad spot where its been catching the case cos of the walking crank as fossil said it would. Has anyone here done the 7700 ring job? Fossil also said years back that the Canadian 4000s didn't have the side port in the muffler.

I wish a company would start repoping parts for these and a few other saws and it pisses me off that husky owns the name and could easily make parts again same for the macs too

Good deal on your top end being a true 4000 bore.

This is the first time I’d heard of using the Poulan 7700 ring workaround tip, but I’d email the eBay seller for sure & see what thickness his rings are.

From what I’ve seen in these series of saws, the thin 3700 & 4000 rings are heat treated blue spring steel of some type, and the standard 1/16” thick rings that were used on the 3400 & 3800 series are made of cast iron.

So I don’t think you could simply grind any thick rings down to thin, without breaking them in two when you install them..I could be wrong too, have been before lol.

I’d email Dave at Otto Gas Engines to see if he has an option for the 4000. I’ve had him grind rings thicknesses down from 3/32 to 1/16, but they were all cast iron.

www.ringspacers.com

 

[Jethro 2t sniffer]

Good deal on your top end being a true 4000 bore.

This is the first time I’d heard of using the Poulan 7700 ring workaround tip, but I’d email the eBay seller for sure & see what thickness his rings are.

From what I’ve seen in these series of saws, the thin 3700 & 4000 rings are heat treated blue spring steel of some type, and the standard 1/16” thick rings that were used on the 3400 & 3800 series are made of cast iron.

So I don’t think you could simply grind any thick rings down to thin, without breaking them in two when you install them..I could be wrong too, have been before lol.

I’d email Dave at Otto Gas Engines to see if he has an option for it.

www.ringspacers.com

Thanks yea this is from Tim..Bore on the 4000 is 1.935" (49.15mm) and the 77 cc saw is 1,965" (49.91mm) and are thin rings im sure he will chime in and confirm just a re gap hopfully

 

[fossil]

Caught that in the nick of time!

She was heading into the case on the FW side. May want replace both the thrust washers...then reset the bearing(s) in.

Don’t buy a dodgy LRB piston, I’d rather see you clean that original one up & run it. Read that the wrist pin will not interference fit into the heated up con rod, like it is supposed to. New P4000 pistons & rings are very hard to find.

Just in case, measure that piston skirt diameter across the thrust face, about 4mm up from the edge, if you can. The P4000 bore is 1.935”, so if it measures 1.931” or larger, you are good to go.

I wonder if that’s actually a 3700 top end, since the muffler had no right side slit. At least you can still get rings for the 3700s. The P3700 has a 1.875” bore.

Sorry for all the non-metric dimensions...no I’m really not! Lol

The Canadian version's like that didn't have the extra port. Kind of like every Canadian Poulan 3400 i've bought had a 3700 AF cover.

 

[fossil]

Thanks yea this is from Tim..Bore on the 4000 is 1.935" (49.15mm) and the 77 cc saw is 1,965" (49.91mm) and are thin rings im sure he will chime in and confirm just a re gap hopfully

I can't remember who used the 7700 rings but a couple of guys did with success. Except for the diameter, the rings match up.

Almost, if not all, thin rings are tool steel.
Except for us fussy collector guys, that piston will work if it and the cylinder are cleaned up and the ring grooves / lands are not damaged. . You would raise your eyebrows if you saw what was running in a Homelite XL-76 I use for fire wood. Comps' at 180 psi too.

For measurement's sake
The rings are,

Radial wall thickness 0.081" (2.06 mm)

width (up/ down) 0.024" (0.61 mm)

There's some good info on the site about cleaning up cylinders without acid. If you can't find it let me know and I'll dig it up for you.

 

[Jethro 2t sniffer]

Thanks fossil yea the cylinder feels very very nice theres a couple light scores on the piston and 1 groove you warned me about from the walkey crank but itle cleen up fine. The rings are still not bad just the gap starting to get a tad big thail do a turn yet if need be. I've run some horrendous pistons in mx bikes like 1 seized real good from a burst water hose and we used a file to get the ring groove kinda ok and that did another 30 hours.. 30 hard full throttle hours before the bottom end went in a big way. So yea i can imagen that old homlite happy as

 

[hotshot]

Fussy collector guys, lol! Piston opinions are overrated.

This P306 is still cutting well, used a pair of reworked Homelite SXLAO rings in it.

Blasphemy! Like Steve tapping that 5200 case with metric threads for Husky isolators...

 

[fossil]

Crank seals cross to SKF CR6119 (with dust seal lip) or SKF CR6120 or National Timken 253747. The seals are the same both sides.

The pocket in the saw case is 0.875" and the shaft is 0.625" Seal width is 0.188"

I don't know of a metric seal that it crosses to.

 

[Jethro 2t sniffer]

Fussy collector guys, lol! Piston opinions are overrated.

This P306 is still cutting well, used a pair of reworked Homelite SXLAO rings in it.

Blasphemy!

View attachment 679324

Well theres some good proof. The way I see it the piston is there fill up a big hole and hold the rings and operate the ports major slap will wear out the bore but a few grooves n what not doesnt really bother the bore to much. All within reason of course but they arnt race saws and we dont use these old girls to earn a wage so yea thats my opinion any way.

Any recommendations for a supplier of seals and thrust washers for this old thing?

Thanks for that info fossil I'll call into the skf agent on way home. I did find 1 shop online with the thrust washers.

 

[fossil]

Well theres some good proof. The way I see it the piston is there fill up a big hole and hold the rings and operate the ports major slap will wear out the bore but a few grooves n what not doesnt really bother the bore to much. All within reason of course but they arnt race saws and we dont use these old girls to earn a wage so yea thats my opinion any way.

Any recommendations for a supplier of seals and thrust washers for this old thing?

Thanks for that info fossil I'll call into the skf agent on way home. I did find 1 shop online with the thrust washers.

For curiosities sake.

I can have two 7700 rings and two thrust washers shipped to me for $23.33 CDN of which the shipping bill is $12 (crap eh?) I think that's about $27.59 NZ

How much are they going to cost you shipped from your US sources to NZ? Maybe we can make it cheaper for you as they are small parts and I can likely ship in a padded envelope.
I have no idea what it cost for an envelope to NZ. I know a saw is around $300.

 

[Jethro 2t sniffer]

Far out thats way cheaper yea most places charge a minimum of 30 nz shipping so to get a few things from a few different places is criminal cost so yea. That would be really good of you if its no trouble for ya. The rings alone was looking about 70nz total

 

[fossil]

I do want you to know that although those guys have good prices they are painfully slow shipping so it might be awhile before I get them if the shipping works out.

Any issues with duty and taxes your way?

That's robbery for the rings.

 

[Jethro 2t sniffer]

Na no issues here only if over 400. And time is no worries I've got plenty of saws to use in the mean time and as they say good things take time.

Really appreciate this thank you very much

 

[s sidewall]

Fussy collector guys, lol! Piston opinions are overrated.

This P306 is still cutting well, used a pair of reworked Homelite SXLAO rings in it.

Blasphemy! Like Steve tapping that 5200 case with metric threads for Husky isolators...

View attachment 679324

I'd be happy if you donated 6 mounts at $30 each. Got all six for the cost of 1. [emoji38]

Steve

 

[s sidewall]

Fussy collector guys, lol! Piston opinions are overrated.

This P306 is still cutting well, used a pair of reworked Homelite SXLAO rings in it.

Blasphemy! Like Steve tapping that 5200 case with metric threads for Husky isolators...

View attachment 679324

Would you have ran this?

Steve

 

[Jethro 2t sniffer]

Would you have ran this?

Steve

F$#% not many psi to be had with that cylinder jeepers prob not haha. Piston would hold rings though?

 

[s sidewall]

Ring locator pins came out, made me sick when I saw it, but it was gonna be a parts saw, 4200 p/c, was gonna put up for jic.

Steve

 

[Jethro 2t sniffer]

Bugger ae was it still running? Surely not wonder what happens with no pins the 10-10 has none. Suposibly a ring end will catch a port but the 10-10 is happy

 

[s sidewall]

Wasn't running, eBay buy for parts, had some damaged parts.

Steve

 

[fossil]

10-10 has two round holes in the exhaust port. Not sure what the transfers look like but saws with those round holes don't have locating pins as a rule.
I wonder if anyone has opened the exhaust port up. Could be crunch time when the rings ends turned that way.