025 Oil Seals

[lumberinspector]

As some of you may know I'm new to the "fixn' up saws" world so bare with me...

Normally when directions tell you to do things a certain way they mean it and I'm sure this is the case but...

Are you able to put the oil seals on by hand with out pressing them?

If not what are some of you using to press them on? (Other than the tool Stihl recommends)

Thanks guys for all your help. It is greatly appreciated. I also want to give a big Thanks again to 04Ultra for the IPL and Manual. I added to the rep points. :biggrinbounce2:

Also what are you guys using to check spark? (Other than the ol' fashion way )

 

[Lakeside53]

You can put them in with a socket of the right size - tap with hammer and keep checking for squareness.

If you have the engine is out of the tanks case, it's WAY easier - just push them on the shaft by hand (pre-grease those lips), reassembed the case with dirko, and your done.

Note that there are two different types of seals - one if you change them on an engine in the case (socket method) and another if you have the engine apart.

 

[lumberinspector]

Thanks Lake

 

[lumberinspector]

Lake

You mentioned that there are two types...Here is a pic of the ones the saw shop gave me. I have the engine apart.

What is the difference between the two styles you are talking about?

What are you using for grease?

Thanks

 

[Lakeside53]

Not sure from the pics, but if the engine is apart it won't mattter. I use stihl clutch bearing grease ,but it really doesn't matter. You also need a thin smear of dirko around the outer rim of the seals.

 

[lumberinspector]

Thanks again Lake.

 

[stihltech]

external

Those are the external install ones. Do yourself a favor and get the other ones. Reseal the bottom pan while you are at it.

My opinion.

Lakeside, ever airtest a saw after installing the external seals?

 

[lumberinspector]

stihltech

What do I look for that will tell me the difference?

Thanks

 

[Lakeside53]

Those are the external install ones. Do yourself a favor and get the other ones. Reseal the bottom pan while you are at it.

My opinion.

Lakeside, ever airtest a saw after installing the external seals?

Nope, but I should... Usually I have the engine out and use the internal seals anyhow.

 

[Lakeside53]

stihltech

What do I look for that will tell me the difference?

Thanks

Stihltech will correct me if I'm wrong.. but I'm pretty sure the internal install seals have a slightly different construction and ridges on the outside edge to hold the dirko (to seal better)

 

[stihltech]

seals

Pretty much it.
I cannot get those seals to hold any real pressure. Vacuum is not a problem, and the saw runs and adjusts well. Just do not feel comfortable putting them in. Glad that I hardly ever find a bad one, unless the pump worm wears into it.