Author Topic: Poulan 3450 Carb issues  (Read 1081 times)

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Offline Eccentric

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Re: Poulan 3450 Carb issues
« Reply #10 on: October 06, 2014, 05:11:04 pm »
Yep.  K22-HDA is the kit.   Make it happen Rockfish.8)
-Aaron

For older saws:
Tune the H side so that it 4-strokes (burbles) at WOT unloaded and just cleans up when under load.
When you lift cutting load, the saw should immediately revert to 4-stroking.  Fine tune the transition point for the wood you're cutting.

Offline rockfishon

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Re: Poulan 3450 Carb issues
« Reply #11 on: October 07, 2014, 05:07:22 am »
Any recommendations on where to buy?

Offline rockfishon

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Re: Poulan 3450 Carb issues
« Reply #12 on: October 07, 2014, 06:28:31 am »
Everyone probably knows, but I ran into this great service manual for the Walbro carbs:

http://www.walbro.com/media/21936/SERVICEMANUAL.pdf


Offline Cut4fun

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Re: Poulan 3450 Carb issues
« Reply #13 on: October 07, 2014, 12:51:04 pm »
 I get alot of my kits through Mowers4u. http://www.mowers4u.com/

Just shop around and find whats best for you.
REDNECK Saw Repair

Offline 3000 FPS

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Re: Poulan 3450 Carb issues
« Reply #14 on: October 08, 2014, 12:36:51 am »
Sometimes I just by my kits on eBay.   
PP 505, 475, 445.

Offline Eccentric

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Re: Poulan 3450 Carb issues
« Reply #15 on: October 08, 2014, 11:59:40 am »
The Mowers4U guys have been good to me.  I've bought from them through ebay and direct.  Here's the K22-HDA kit on their site.  That's just about the cheapest I've seen for an actual Walbro kit for this carb.  I've seen them for $9 shipped on ebay from other sellers before.


http://www.mowers4u.com/walbro-walbro-k22hda-carburetor-repair-p-769.html
-Aaron

For older saws:
Tune the H side so that it 4-strokes (burbles) at WOT unloaded and just cleans up when under load.
When you lift cutting load, the saw should immediately revert to 4-stroking.  Fine tune the transition point for the wood you're cutting.

Offline rockfishon

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Re: Poulan 3450 Carb issues
« Reply #16 on: October 18, 2014, 08:15:15 am »
I just received the rebuild kit in the mail.  There are many more parts than what I thought were going to be in there.   Removing the punch plug also seems scary since the manual says I can damage the carb if not done correctly with the "special" tool.  Is it imperative that I replace all the parts? 

Also since this is the time of year for using the saw and it still runs, I am inclined to hold off till a cold winter day to rebuild it.  I don't want to disable the saw now.

Offline 660magnum

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Re: Poulan 3450 Carb issues
« Reply #17 on: October 18, 2014, 08:32:00 am »
The regulator diaphragm is the most likely part to go bad.

Years ago the check valve tabs of the fuel pump diaphragm would curl up but today the pump diaphragms are typically Mylar or Kevlar composites.

The needle of the regulator valve sometimes gets a ring worn in it.

The other parts are seldom suspect.

With an old used saw with unknown history - anything is possibly wrong?
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
Be all that you can be . . .

Offline rockfishon

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Re: Poulan 3450 Carb issues
« Reply #18 on: October 18, 2014, 08:44:49 am »
Original owner and I have never had to touch the carb till swapping out the tank/handle.

Offline 660magnum

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Re: Poulan 3450 Carb issues
« Reply #19 on: October 18, 2014, 08:56:40 am »
The regulator diaphragms are still a type of fabric reinforced rubber compound and get stiff.

This causes a very inconsistent fuel mixture to the engine and you can never seem to get the needles set correctly.
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
Be all that you can be . . .

 

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