STIHL The Official Stihl Chainsaws Thread

[lehman live edge slab]

I’m sure to have a 021 or 023 motor you can have.

No the 250/025 is a longer stroke, the 021/210 and 023/230 are the same stroke different bore. The 023/230 is the same bore as a 250 but has the 021/210 stroke. But his cylinder ect is probably fine so if he gets a crank out of a 021-023 you can put it back together.

 

[singinwoodwackr]

No the 250/025 is a longer stroke, the 021/210 and 023/230 are the same stroke different bore. The 023/230 is the same bore as a 250 but has the 021/210 stroke. But his cylinder ect is probably fine so if he gets a crank out of a 021-023 you can put it back together.

Will the complete motors all fit the cases?
I’ll have to go through the several misc 1123 motors I have in a box. Some are in pieces, some intact
I know there are some 021/23 cranks in there

 

[singinwoodwackr]

Will the complete motors all fit the cases?
I’ll have to go through the several misc 1123 motors I have in a box. Some are in pieces, some intact
I know there are some 021/23 cranks in there

I have a bag of misc easy start parts as well

So, IPL shows the 21 as a separate animal but with same 40mm piston as the 23. Different cranks, however. 23 a stroked 21?
25 and 23 share the same crank but 42.5mm vs 40mm pistons
Housing/case is the same but the easy start has its own version.

 

[lehman live edge slab]

Yes the housings are all the same, flywheels are different due to stroke on some and i believe easy start saws have different timing than standard. But if he gets an 021/210 crank he can reuse the rest, in a previous post I think I said that a 23 crank would work but made a mistake in putting that. Only the 021-210 crank will work, 23 and 25 same stroke with the different bore. I have an 021 cylinder that I used an 025 crank in and basically made an 023 with a set squish of 20 thousandths. The saw runs and has good compression but still working out the port numbers to get it to run really well or at least I hope I can make it do well. Had to take some off the squish band and 100 thousands off piston to get the 025 crank to work in the 021 cylinder.

 

[Maintenance Chief]

038 rim clutch drum fit an 028 ? It's been a minute since I was working on an 028.