Chainsaw Repair

Test cutting and wont go full throttle.

Well this saw has more issues. New boot was installed at a shop. The dang flange is broke and someone tried using a wrong size nut and basically slides onto the carb bolt.   So only 1 side was even securing the carb.

So got it torn apart with a new little bolt that fits the carb bolt and trying to redneck it into the flange. If this holds tommorrow I wont need to order a flange and 2 square nuts. 

Carb was full of fines on both sides too. Dont appear to been apart for a long time.   Might need a carb kit too.

Least the H side limiter is now grinded off.

https://www.ereplacementparts.com/makita-dcs7301-73cc-chainsaw-parts-c-97_98_245_9468.html?osCsid=evbp2mj3j98lh6n8l7tq0ppuf6

I do not believe I have ever seen a key shear on a chainsaw before.    That thing must have come to a stop pretty fast so that the momentum of the fly wheel sheared the key. 

Dolmar 7300 scored cylinder. Going to see if can save cylinder.

He said new intake boot had tore and cylinder bolt had came out after 2 tanks on a rebuild.   

Who did the rebuild.

Owner and small shop south together I think.  He said the shop pressure tested and it was all good when cylinder put back on.

I ask owner if cylinder had been cleaned up before. He said yes by him.

Unless I'm mistaken a 7300 Dolmar is the same as a 7300 Makita which is the same basic engine as the two DPC 7321 concrete  saws I've been tinkering with .50 mm bore 37 mm stroke  Different ratings ranging from 5.1 to 5.6 HP .
I'm thinking I ran a new one as a demo brought by a dealer to one of the GTG's some time ago and it had plenty of go get-em . I can't remember though exactly when or where .That said it's the only one I've ever seen .
What I do remember was it was a pretty plump log around 40 inch and it never as much as hickuped going through it wearing a 24" .