Got some time yesterday to get into this build and now it's a runner real good one at that but here's what I had to tweak and replace in order for it to a good running saw, firstly when I looked over the cylinder it looked fine but after a close inspection it needed some port chamfering and some casting bits ground of ,just little bits that if you picked at them with a scribe they would fall off ,so I pretty much smoothed out the ports chamfered the edges and then dropped the lower tranfers ,I glassed the base and took .008 thou off getting squish to
.025 thou ,
running standard hutzl piston and rings ,everything clearance wise was spot on but the piston was hitting the crank at BDC so a bit of grinding on the underside was needed.
Every other aspect of the saw went together with minimal or no tweaking ,had to toss the rear half of the muffler due to it being warped or bent and wouldn't seal ,had a oem rear handy ,I pulled the carb down and inspected it ,check needle height ,at this point I was impressed.
Put some fuel in it and it popped on the 2nd pull ,so far so good ime thinking,move the switch to run another pull and it ran ,ok so it needed tuning,well it turns out that no amount of tuning was going to help this carb,,went through all my stuff and found a oem carb ,threw it straight on set the mix screws and bingo ,running as it should,
Threw a bar and chain on and tuned ,went and done some test cuts just to get it hot and load the engine,chain wouldn't stop running at idle,ititially it thought clutch springs but turns out the drum was out of round ,i threw a spare oem drum on problem solved,all up pretty happy with this build ,it put oem fuel and impulse lines in and a ngk plug ,no way was that farmertec plug going in,going out today to cut some large rounds of hardwood ,that should test it out ,running 25:1mix just to give the Chinese bearings some longevity.
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