Chainsaw Repair

Jonsered 111 111S IPL    http://chainsaw.dyndns.info/downloads/brand/jonsered/Jonsereds_111-111S.pdf

Timing is a somewhat universal entity for chainsaws

Some of the limiting factors are the use of the chainsaw as there is a trade off between RPM and Torque.

A chainsaw used all day in the woods has more of a heat build up concern than one that cuts three cookies at a get together and is then put away.

Other considerations are the piston skirt width and length as well as the design of the transfers as to how large your ports can be.

To read a lot about porting and to be able to apply this knowledge to your 111 is the way to go.