Craftsman 3.4/3.7/4.0 Poulan 3400/3700/4000

[Efisher26]

WHATS EVERYONE GOT? It seems there needs to be a dedicated post for these saws, so many talk about them. With that said, I have a 3.7/18. My buddy brought me his for a clean up. He has a 3.4/20. The sticker with model # on his is gone. Is there a production year difference that they put the smaller CC eng with a bigger bar?

 

[blk05crew]

Poulan made both the 3.7 and the 3.4 for Craftsman. Exactly the same and the Poulan 3700 and 3400 for the most part, just red not green and different stickers. If you take the air filter cover or the cylinder cover off they will have a date marked on the plastic on the underside. It will be in a circle and have the last 2 numbers of the year made. Most of them should be in 79-82 year range normally.
You'll see the same 3400 model saws in Dayton orange, Skilsaw yellow, Matercraft yellow, Craftsman gray, Wizard brand and I'm sure I'm forgetting some others as well.

 

[Efisher26]

Wow, didn't know there were that many rebrands. Is it as simple as Poulan changing their mind on a 18 bar on the bigger 3.7?

 

[blk05crew]

Wow, didn't know there were that many rebrands. Is it as simple as Poulan changing their mind on a 18 bar on the bigger 3.7?

Not sure, that could have been an earlier one or made in Canada, there are so many different variables with them. Look under the cylinder cover or air filter cover and see when it was made.

Forgot they also come in Poulan Pro yellow and black in 3700 and 4000 form. Different numbers though.

 

[Efisher26]

So the 3.4 is a 1978, the 3.7 is a '83. His 20in bar makes me want to get one

 

[blk05crew]

So the 3.4 is a 1978, the 3.7 is a '83. His 20in bar makes me want to get one

Ok, maybe it's got a 20" because it's and earlier version because later the 3.4 didn't come with a 20" bar. Honestly, not a ton of difference between your 18 and his 20.

 

[Efisher26]

I know, I will never need a 20in bar, but just looks Awsome!

 

[Efisher26]

Anyone know what, if any are the signs of crank bearings going bad?

 

[Efisher26]

Anyone looking for one of these?

 

[RedneckChainsawRepair]

I've had and sold a 3.0 labeled = 3.4 , 375 4000 3400 etc etc.

 

[Efisher26]

Haven't seen a 3.0 yet, I'll take a look around

 

[Efisher26]

Found this, why won't it fit my 3.7? Because it's for a "low pro" chain?

 

[redunshee]

Anyone know what, if any are the signs of crank bearings going bad?

Move the clutch sideways( lateral movement). If there is any movement bearings are bad. You'll need to split the case to replace them but I've rarely seen them go bad. In and out play is okay.

 

[ANewSawyer]

Got one I need to go through. I hope it works out better than my T-25.

 

[Efisher26]

Got one I need to go through. I hope it works out better than my T-25.

 

[ANewSawyer]

http://www.arboristsite.com/communi...ut-this-old-craftsman-saw-pic-warning.279053/

 

[Efisher26]

Same as mine, u do a muff mod?

 

[ANewSawyer]

No, I will when I rebuild the engine. Muff mod, new seals, carb kit, the works.

 

[Efisher26]

Are your seals leaking or just doing them because? Mine are not but everyone says they change them out

 

[MS460WOODCHUCK]

If the saw runs like it should I personally wouldn't touch the seals.