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Why I don't care for Poulans (Home owners )

Started by weimedog, December 21, 2013, 08:17:01 AM

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weimedog

My friends Husqvarna 41 would not run. Fuel starvation. SO after a carb kit & cleaning in the ultrasonic cleaner, it would start and run for 30 seconds. AND a fuel line and fuel filter...no change. After the third time with the carb on and off...dug deeper. Acts like the carb isn't getting pulsed. Saw this on a Stihl MS170 once. (Funny story actually, it came from Chainsawwhisperer and looked brand new, but wouldn't run, after may cycles and swapping parts I tore it down to pieces....and found the pulse hole was never drilled in the cylinder/case! Drilled a hole, thing ran fine)

I don't work on those Poulans often but have run into this frustration before....and ditched the saw. My little Jred Craftsman hybrid had gone this way..

SO next level of surgery was to pull that plastic thing in between the carb and cylinder ... and realize this is another one of those moments where you understand at a deeper level why the better saws are worth the money. The way they transfer the differential pressure to pulse the carb is not a clean design, that plastic mounting system also has a little protrusion that sticks into a hole in the cylinder and has to seal. If this doesn't seal well, the pulse will be weakened or even non existent. The thing was melted and there was no possible way it is sealing. No pulse. No run...problem understood. Even though I have new parts ordered (that plastic part and a intake boot) I have NO confidence that with all the vibration, expansion & contraction, etc that will EVER be a reliable seal! SO  I'm considering epoxy and other options. Even a different pulse setup with a J-red style pulse system using a fitting and tubing on a modified carb.

BUT bottom-line is when you are considering saw options, some simply have better design and construction than others. Those Home owner saws are rated that way and priced that way for a reason! Even the Homeowner grade Husqvarna 440 is a MUCH better option, or a used 350....anything
Husqvarna 365sp/372xpw Blend, Jonsered 2171 51.4mm XPW build,562xp HTSS, 560 HTSS, 272XP, 61/272XP, 555, 257, 242, 238, Homelite S-XL 925, XP-1020A, Super XL (Dad's saw); Jonsered 2094, Three 920's, CS-2172, Solo 603; 3 Huztl MS660's (2 54mm and 1 56mm)

weimedog

And the older Husqvarna 51.....a similar setup. But when I dig into saws like the 238-246 series.....now that's a good design!
Husqvarna 365sp/372xpw Blend, Jonsered 2171 51.4mm XPW build,562xp HTSS, 560 HTSS, 272XP, 61/272XP, 555, 257, 242, 238, Homelite S-XL 925, XP-1020A, Super XL (Dad's saw); Jonsered 2094, Three 920's, CS-2172, Solo 603; 3 Huztl MS660's (2 54mm and 1 56mm)

NCFarmboy

+1 on the 238-246 series.  Pro all the way.  That reminds me I need to put my 238 back together.
Shep
Lots & Lots of Saws

sablatnic

Actually there is a similar set up on a lot of better saws too. Partner 500, 5000, 400, Husqvarna 40, 50, Jonsereds 490.

Spike60

Quote from: sablatnic on December 22, 2013, 09:08:01 AM
Actually there is a similar set up on a lot of better saws too. Partner 500, 5000, 400, Husqvarna 40, 50, Jonsereds 490.

I agree. That system worked too well on too many saws for too many years to dismiss it as a poor design. Tons of 51/55's out there have run for years with that set up. Granted, it is the usual point of an air leak, but simply because that's the intake system that's on the saw. Newer saws have failures with intake boots and impulse lines because that's their design.

The Poulan derived Husky's though..........I never really liked (or sold) them. And they got worse as the years went on because the early 36/41 weren't all that bad. The 137/142 were very tempermental and the current 235/240 stuff is God awful.

I never kept those saws in stock. Never felt the need to offer something at every price point.
Husqvarna-Jonsered
Ashokan Turf and Timber
845-657-6395

weimedog

While many saws may have had that design, that doesn't make it good, just serviceable. I  still don't like it and still consider it a crappy design. Too many potential tolerance stack issues from surface finish of both the cylinder and plastic tube to part dimensional related things that increase or decrease the pressure that plastic fitting has pushing on the cylinder. I will never willingly buy or recommend any one else buy a saw with that design.....so please lay a few more saw models to avoid out there! Reminds me of the old saying, "200 Billion fly's eat chit, chit can't be all that bad!" So what is the best approach to making that seal better? 1194? Epoxy? BTW just fixed two 51's and one did have an air leak there, it wasn't melted; just was dirty, 1194 seems to have helped.
Husqvarna 365sp/372xpw Blend, Jonsered 2171 51.4mm XPW build,562xp HTSS, 560 HTSS, 272XP, 61/272XP, 555, 257, 242, 238, Homelite S-XL 925, XP-1020A, Super XL (Dad's saw); Jonsered 2094, Three 920's, CS-2172, Solo 603; 3 Huztl MS660's (2 54mm and 1 56mm)

Spike60

A fresh intake grommet should do the trick. Especially after removing the partition wall on an older saw. Rule is pretty much never use the old grommet if you take it apart. Also don't over do it when tightening the carb screws as they can strip the threads. (Again, it's more likely to happen when putting an old saw back together. ) Another, shall we say, "characteristic" of this design.  :)
Husqvarna-Jonsered
Ashokan Turf and Timber
845-657-6395

weimedog

Intake grommet? Guess I need to find one of those. Got a new "plastic" part
Husqvarna 365sp/372xpw Blend, Jonsered 2171 51.4mm XPW build,562xp HTSS, 560 HTSS, 272XP, 61/272XP, 555, 257, 242, 238, Homelite S-XL 925, XP-1020A, Super XL (Dad's saw); Jonsered 2094, Three 920's, CS-2172, Solo 603; 3 Huztl MS660's (2 54mm and 1 56mm)

weimedog

husqvarna 41 impulse pipe 505310751.....that's what the schematic shows....wonder if I can just make one with a fuel line
Husqvarna 365sp/372xpw Blend, Jonsered 2171 51.4mm XPW build,562xp HTSS, 560 HTSS, 272XP, 61/272XP, 555, 257, 242, 238, Homelite S-XL 925, XP-1020A, Super XL (Dad's saw); Jonsered 2094, Three 920's, CS-2172, Solo 603; 3 Huztl MS660's (2 54mm and 1 56mm)

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