Leaf Blower Gasket

[tbm5690]

I have a Poulan Pro 2 stroke backpack blower that is leaking at this gasket. Online searching hasn't provided a replacement option. Am I better off cutting my own out of gasket material or using high heat RTV?

 

[jhellwig]

2 strokes don't typically have heard gaskets or heads. Do you have a pic of what you are needing or where it is leaking from?

 

[tbm5690]

2 strokes don't typically have heard gaskets or heads. Do you have a pic of what you are needing or where it is leaking from?

Realized I mis-spoke. Post edited and photo included.

 

[jhellwig]

Base gasket or cylinder gasket should get you in the neighborhood. What makes you say it is leaking? 2 strokes will run erratic if there is an air leak and eventually burn up.

 

[tbm5690]

Base gasket or cylinder gasket should get you in the neighborhood. What makes you say it is leaking? 2 strokes will run erratic if there is an air leak and eventually burn up.

It drips fuel/oil on the floor after running that turns into a small puddle. I've isolated that gasket to be the source. I cleaned up the seepage around the gasket (can see it a little in the pic) and it immediately stared seeping again. It runs smoothly.

 

[Nukeman7]

I don't know if the original Poulan Pro backpack blower (BP 406) has the same cylinder head as your Pro 2 model; however, if it does it is the cylinder gasket:

Poulan 110612148​

 

[tbm5690]

I don't know if the original Poulan Pro backpack blower (BP 406) has the same cylinder head as your Pro 2 model; however, if it does it is the cylinder gasket:

Poulan 110612148​

Thanks, it's the PR48BT which per Parts Tree only offers the entire cylinder rebuild kit and not just the gasket.

 

[tbm5690]

So back to the question after more futile searching for the gasket for my specific model turning up no results: would you cut your own or use RTV?

 

[jhellwig]

I doubt that is where it is leaking from because you would have issues with it running if that was the case. It could be coming from the fuel lines or primer or carb.

The crank case on a 2 stroke has to be sealed for it to work. When it is not running there is nothing but a minimal amount of fuel/oil vapor that is left from it shutting off. If the breather is blocked it could be pushing fuel out from somewhere and it is just puddling there.

 

[Fordiesel69]

Do not crack that open to explore yet. On those poulan pros its seldom the gasket, its usually the base screws that snap off, or it can be they have just loosened up a bit.

 

[ironman_gq]

You can use RTV but you need to check piston to dome clearance at the edge of the cylinder, a piece of solder through the spark plug hole will get you a good measurement. You want at least .025 and preferably .030-.035 between the squish band in the head and the top of the piston. Before going through all that I'd take a very close look at the fuel lines and muffler gasket. If it looks like a puddle of oil it's likely exhaust slobber, that gasket doesn't hold back any fuel or oil it keeps the crankcase/cylinder sealed and any leaks usually show up as a lean condition similar to a vacuum leak on a car.