poulan pro pp5020av

[kraftzion]

I made a good running saw out of a 4218 strato. Took a bit of work though. Stock timing was 132 intake and exhaust. Took it to 152 intake and exhaust. Drilled the carb venturi out from 9.5mm to 12mm. Unshrouded the air filter. Opened up the hole between fan and airbox. Ignition advance. Muffler mod. Ground the safety rakers off the chain. It'll hold 10, 500rpm in the cut now, went from 14 seconds to 7 seconds on the same log.

[scottfoster]

Randys Engine repair ussually has those pistons on hand. Dont sound half bad once fixed and not sucking air in.

[tedneitzel]

It's a runner! If the 4218 needs carb kit mine took a RB 129!

[turtlewolfpack]

I am thrilled you sorted it that fast! The intake boot was suspect to me as well, I think I mentioned that, but that is awesome!
Um....nope I don't want it back!!!
😂😂😂😂😂😂

[doctorromex]

Mine is the craftsman version and is in great shape cylinder wise. I took it apart, ported it. I used numbers and techniques I mastered by building the strato 42cc engines that are hard runners with power to spare and Stihl grade reliability. That doesn't seem to work on the 50cc. It's lame, it rpms no better than stock. It idles ok and seems to hold tune but runs like a 36cc saw.Ive never checked compression or leak tested it. It doesn't act like it sucks air but it's a slug. No advance to half a key advance runs the same. I feel like static compression is low due to factory tolerances not wear and the exh roof is barely raised. Maybe it needs a pop up or maybe it needs Crank seals. I build 46cc 295 PP engines that will smoke the 2050 leaving it in the dust. Maybe I'm expecting too much.