Author Topic: Poulan 3800  (Read 660 times)

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Offline Cut4fun .

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Poulan 3800
« on: September 27, 2015, 03:22:59 pm »
So what is different about a poulan 3800 compared to the poulan 3700?

3400 bore is 1.81" dia, 3700 is 1.875" and 3800 is 1.88".

3700 thin ring bare left and 3800 3400 think ring and chrome piston
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Offline 3000 FPS

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Re: Poulan 3800
« Reply #1 on: September 27, 2015, 05:43:45 pm »
The Poulan 3800 is 61cc.
The Poulan 3700 is 60cc

Poulan 3800 has two thick rings and a chrome piston with a bare cylinder.
Poulan 3700 has two thin rings and comes with a chrome cylinder and bare piston.

The Poulan 3800 will run on average around 125 psi on the compression.
The Poulan 3700 will run on average around 150 psi on the compression.

I have seen both saws with higher compression but it is not the norm.

All the anti vibe are the same.

I have modified both saws and the 3700 is always a lot stronger saw.   
I do have two 3800 saws and both have had the cylinders lowered so the compression is now 140 to 150 psi.
They are good firewood saws and I have used them for bucking and noodling up logs.

The 3700 I modified runs strong enouph to use a 24" bar with no problem.   I tacked it at 13,500 out of the cut.

Oilers are the same.

The 3800's I have both use the plastic clutch cover where as the 3700's use a mag clutch cover.
I do not know if that is the norm or not.

The 3700's use a vented or louvered air filter cover and the 3800's sometimes use the type of cover as on 3400.  No vents.
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Offline Cut4fun .

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Re: Poulan 3800
« Reply #2 on: September 27, 2015, 05:48:11 pm »
Thanks for info

I just took one in today by original owner with original poulan bar on it.  I didnt even try to start being he said it ran last year when used, but hasnt tried it this year. Didnt want to pull old gas mix into carb.
Compression felt good on pull over.  I will get you a psi check to see with your later.

I'm just going to sell or trade it as I dont do this series.

Working on pics.
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Offline Cut4fun .

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Re: Poulan 3800
« Reply #3 on: September 27, 2015, 05:51:13 pm »
As usual my cheap camera has green fubarred. 

As it came in no clean up.







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Offline 3000 FPS

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Re: Poulan 3800
« Reply #4 on: September 27, 2015, 06:21:38 pm »
Looks like it has the plastic clutch cover and the air filter cover with no vents.   Easy saws to work on and modify.
It should make a good runner.   If you have to do fuel lines make sure you have the duck bill in there for the vent.
PP 505, 475, 445.
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Offline Cut4fun .

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Re: Poulan 3800
« Reply #5 on: September 27, 2015, 06:31:34 pm »
My 4000 had a plastic clutch cover. Dont know if it was right one or not.

Oh 3800 has 3.7 on it too.  What would make the same bore and stoke saws 3700 3800 be different cc 60 v/s 61?  Unless bore is smidgen different?






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Offline 3000 FPS

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Re: Poulan 3800
« Reply #6 on: September 27, 2015, 09:25:40 pm »
I think the bore has a small difference on the 3800.   

I have never seen a 4000 with a plastic clutch cover.    It is a common occurrence for the mag clutch covers to get broken out from being tightened on the chain adjuster.   

The bolt pattern for the cylinders are the same on the 3400, 3700, 3800, 4000, 395, 385.   
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Offline Eccentric

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Re: Poulan 3800
« Reply #7 on: September 28, 2015, 04:11:30 am »
My 4000 has a wide plastic clutch cover.  Still has the 4000 decal, so it is probably original. 
-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 3000 FPS

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Re: Poulan 3800
« Reply #8 on: September 28, 2015, 10:31:06 am »
My 4000 has a wide plastic clutch cover.  Still has the 4000 decal, so it is probably original. 

Thanks Aaron.   It could be the later production had plastic clutch covers.    I do not believe anything that Poulan did was written in stone. 
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Re: Poulan 3800
« Reply #9 on: September 28, 2015, 06:04:37 pm »
Right at the 140psi Roger Just at the left side of line marker Over 138 but not hard on 140.

Under cover like new. Carb shiney silver, air filter looked like new. Looking through plug hole looked like new.

Dumped old mix, rinsed tank twice. Fueled up popped 3 pull. Running at sounds gooooood.   

Another lucky take in.  ;D
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