Chainsaw Repair

People reading this and trying to get The Dolmars sorted out . . . .

This family of chainsaws is the Dolmar and some times Makita 109, 110, 111, & 115. They all had a common crank shaft and crankcase.
The 109 & 110 had a 40mm bore 43cc and the 111 & 115 had a 44mm bore 52cc. They all had the same crankshaft. The 110 and 115 were supposedly closed port and the 109 and 111 were open port. It appears that the 111i was the most popular of all these? Later renditions became the 520 and also there was a 45mm bore 54cc 540 orphan that existed at the end. My open port 111i had a Kolbenschmidt cylinder and I have four closed port cylinders and they are all Mahle. Also there were later versions made as the PS43 & PS52 that had aluminum rather than magnesium crankcases as non pro price point chainsaws.

These chainsaws were made from the mid 80's until somewhere around 2004 or for close to 20 years. Most are now 15 yrs old or older. So, keep in mind that some one with a pile of old chainsaws may have mixed and matched some parts here and there and you may very well have a Frankensaw odd ball?