Recent content by UltraSwine

No worries. I'll figure it out. Thanks. Also in process of adapting HD filter to the 290. So far, nobody's "input" has been useful with that, either. SSDD. Be cool, don't take any wooden nickels. US

I have cut the base, set squish, cut the bearing and seal seats accordingly. Like others have done with Poulans and Macs. All I am asking is - should I port the primary transfers larger than the secondary transfers like even the 390 or just make my numbers right and profit from tighter primaries...

I have run both jugs in various configs. I am not asking arbitrarily. The 290 has noticeably smaller primary than secondary transfers. I want to know if that matters. Thanks for your reply. US

Yes. They are open, quad port. Beside the point. I am asking... Most engines have larger primary than secondary, my 290 has smaller primary than secondary. WHY? Any reason to LEAVE the design alone OR port the primary out like most other saws? Sorry if I stutter. I'm a small engine mechanic...

Greetings. I'm a year-long lurker, this is the first time I've had a question that isn't answered by a little searching. Long story short, this is a transfer port question. More or less. I was running an 49mm AM 390 jug on my '04 MS290 and it fried. Now, I am putting the original Mahle 46mm jug...

Greetings. I'm a year-long lurker, this is the first time I've had a question that isn't answered by a little searching. Long story short, this is a transfer port question. More or less. I was running an 49mm AM 390 jug on my '04 MS290 and it fried. Now, I am putting the original Mahle 46mm jug...