08dirtdigger
New Member
Bought a supposed Great Running - Quick starting Stihl MS390 off eBay to complement my MS290. When I get the thing, I realize it is much older model than my 4 yr old 290. I wanted to be able to interchange bars and chains and get a 25" for the 390.
After I get the not so quick to start thing going, I less than happy but then I realize that the bar and chains are different pitch.
Older 390 has 3/8 sprocket - newer 290 has .325.
Here is the famous dumb question pharse again.
Can I just change the chain sprocket on the older 390 so it takes the .325 8t reduced kickback bar and blades?
After I get the not so quick to start thing going, I less than happy but then I realize that the bar and chains are different pitch.
Older 390 has 3/8 sprocket - newer 290 has .325.
Here is the famous dumb question pharse again.
Can I just change the chain sprocket on the older 390 so it takes the .325 8t reduced kickback bar and blades?