Stihl 028

[Jasonrkba]

I'm getting 140 lb compression. Is that enough and if not can I upgrade to 46mm and make it super?

Thanks all.
Jason.

 

[Jasonrkba]

I've got several more questions about the 028wb once someone chimes in.

 

[pioneerguy600]

Yes and yes. There let the games begin..

 

[HarleyT]

See if yours has points.

 

[Jasonrkba]

That is my next question. I've never dealt with the older style that has points. I see a ton of aftermarket ignition modules that seem to bypass the point setup, if I go that route do I have to replace the flywheel?

The 028's came with one of three size Pistons 42, 44, 46mm. What is the best way to tell what I have?

And third. I inherited the saw so know nothing about its past. When I got it was froze up, or when you pulled the rope it would not turn. I sprayed a decent amount of Arokroil through the spark plug hole and let it set for two days. Took the starter off too examine than reinstalled. The piston freed up and seems to hold that 140 pretty well.

 

[Jasonrkba]

Took a picture of the coil just for reference.

 

[DeckSetter]

That is my next question. I've never dealt with the older style that has points. I see a ton of aftermarket ignition modules that seem to bypass the point setup, if I go that route do I have to replace the flywheel?

The 028's came with one of three size Pistons 42, 44, 46mm. What is the best way to tell what I have?

And third. I inherited the saw so know nothing about its past. When I got it was froze up, or when you pulled the rope it would not turn. I sprayed a decent amount of Arokroil through the spark plug hole and let it set for two days. Took the starter off too examine than reinstalled. The piston freed up and seems to hold that 140 pretty well.

Can you pull the muffler and get some pics of the piston and cylinder?

 

[Jasonrkba]

 

[HarleyT]

No need to change flywheel, just clip the wire going to the points and hook up the kill wire to the electronic coil,
Get a good used oem coil off of a ms290, avoid the chinese junk.

 

[pioneerguy600]

No need to change flywheel, just clip the wire going to the points and hook up the kill wire to the electronic coil,
Get a good used oem coil off of a ms290, avoid the chinese junk.

I think that saw has the electronic module on it.

 

[Jasonrkba]

Sounds good. I plan on keeping this one and selling off some of my cheaper stuff. Once this one is good to go I have a super to start on, that will be an interesting thread. Looking through the exhaust port I can see a piece of the piston has broken off.

But back to this one. Piston looks good to my novice eyes and the cylinder looks good to. So I'm feeling a little better about that. I have a carburetor and starter on the way, fuel filter and line has been replaced as well as the impulse line. The ignition module showed good spark but I've read they can be finicky so I'll find one from a 290.

Thank you! And if you have any more suggestions they are very appreciated.

Jason.

 

[pioneerguy600]

That is my next question. I've never dealt with the older style that has points. I see a ton of aftermarket ignition modules that seem to bypass the point setup, if I go that route do I have to replace the flywheel?

The 028's came with one of three size Pistons 42, 44, 46mm. What is the best way to tell what I have?

And third. I inherited the saw so know nothing about its past. When I got it was froze up, or when you pulled the rope it would not turn. I sprayed a decent amount of Arokroil through the spark plug hole and let it set for two days. Took the starter off too examine than reinstalled. The piston freed up and seems to hold that 140 pretty well.

You need to measure the diameter of the bore or let us see the very top of the piston, the Super has a pop up on the piston dome, the regular 44 mm has a domed piston.

 

[Jasonrkba]

Top of the piston looks flat. It has a small dimple stamped in the middle and an arrow pointing towards the exhaust port. I tried to get a picture but without breaking it down I couldn't.
Here is a better picture of the coil.

 

[HarleyT]

Here is an old points setup on e-bay.

 

[HarleyT]

Top of the piston looks flat. It has a small dimple stamped in the middle and an arrow pointing towards the exhaust port. I tried to get a picture but without breaking it down I couldn't.
Here is a better picture of the coil.View attachment 557494

The wires going under the coil are to the points/cond.

 

[Jasonrkba]

Gotcha. I'll take your suggestion and get one from a 290.

Thanks. Jason.

 

[Jasonrkba]

You need to measure the diameter of the bore or let us see the very top of the piston, the Super has a pop up on the piston dome, the regular 44 mm has a domed piston.

So would mine having the flat piston indicate a 42mm?