Poulan HYBRIDS

[Maintenance Chief]

@Ronie
This will hopefully be a joint thread with Ron and myself, as we pretty much built these saws simultaneously and detailed the builds in PM.

 

[Maintenance Chief]

My very humble beginning, a 3$ saw from a thrift store. It was sitting in the parking lot under a tarp.

 

[Maintenance Chief]

The original top end was badly damaged, it was the chrome piston, bare cylinder flavor.

 

[Maintenance Chief]

After some rash decisions and not very accurate measurements, I figured that I could graft a scored cylinder from what I thought was a 346xp that @afleetcommand sent me a few years ago when we were trading parts.

 

[Maintenance Chief]

Pre victimized!

 

[Maintenance Chief]

I ran a scotch bright pad in it long enough to start wearing chrome off the side of the exhaust port. It's perfect for this type of build.

 

[Gullet]

Saw a guy on the other forum draft a 272xp cylinder on a 3700 Poulan IIRC.
Milled a carb adapter.
It was slick, I think I deleted the pics tho.

 

[Maintenance Chief]

Saw a guy on the other forum draft a 272xp cylinder on a 3700 Poulan IIRC.
Milled a carb adapter.
It was slick, I think I deleted the pics tho.

That would be Todd , hes a true craftsman.

 

[Maintenance Chief]

Well the new cylinder won't just plop down on that poulan case , not just because of the bolts either so I tore it all the way down.

 

[Maintenance Chief]

Tried to clearance the case for the cylinder skirts ( which became useless later on)
Choppy choppy

Where the bolt holes line up to the case.

 

[Maintenance Chief]

Ordered a VERY cheap piston from one of the site sponsors.

Looks good but she's a real head slapper, piston was into the cylinder quite a bit! About 6mm.
As I say it's better to ask for forgiveness than permission .
I started measuring stuff now.

 

[Maintenance Chief]

Since Ron and I were both communicating about our individual builds ,I told him I ran into this issue.
Ron to to rescue, he shipped me out a peice of flat 1/4" aluminum immediately.

 

[Maintenance Chief]

My phone needs charging, so @Ronie please post some pictures or comments on your builds.

 

[Ronie]

I did two Craftesman 3.0s and put $15 Farmertec MS360 cylinders on them that I got off Amazon with different timing numbers. to get themo fit I moved the cylinder bolt holes to match up with the case. I also drilled out the case bolt hole and put 5mm inserts in them, I think the Poulan bolts are SAE, not sure what size but they are around 6mm, and I wanted to take as little as I could off the cylinder bolt holes. I also opened up the case a little for the bigger piston and filled the openings for the lower transfers with JB Weld..

 

[Ronie]

To get the top cover to fit and to clear the case on the PTO side I had to trim the cylinder fins.

 

[Ronie]

The flywheel had to be trimmed up a bit to keep it from rubbing. I did the first saw with a grinder and use my lathe on the second.

 

[Ronie]

For an intake boot I used a 372 boot turned upside down. The hole in the tank that the boot goes through had to be opened up some for it to fit.

 

[Gullet]

Dang fellas that's a lot to take in with the alternating posts.

 

[Ronie]

The Poula HDA carb is tiny so I used an OEM Echo 590 carb on the first one and ordered an AM 590 carb from China. The fixed jet in the OEM one would make the saw to rich so I replaced the jet, The AM one didn't have a fixed jet. To get the throttle and choke working I used the rods out of the Poulan card with the disk that came with the 590 carbs.

 

[Ronie]

Dang fellas that's a lot to take in with the alternating posts.

His phone needed charged so he ask me to post my build.