Chainsaw Repair

A Tillotson HK42B used on the 038 AV is a perfect match .However the Bing seems to be a better carb .Oregon makes the rebuild kits for the Bing BTW .

Zama C3S-148

$65-70 online. 

Thank You all for the replies,
 Yes, The upper AV mount screw was loose and the saw has a lean condition at idle and low speed ( torn Boot).
   Since day one, The  saw will run pretty good when bucking firewood in the upright position , but when turned over onto it's side , It will run burbling rich . A couple of dealers looked at it back then and never cured it.
 Was this a common problem for the 038 magnum II's or just mine?
 For a 72 cc saw , I thought it should have cut better, It won't keep up the 70 cc 044, which I bought to replace it.  I have both saws now, along with a 066, 064 ( My favorite), a 011,a 056,a056 super and a 056 magnum II .

I plan on stripping the saw down and having the dealer install engine seals due to the age,  But does anyone
have any performance tips as to make this saw really run ?

 Thanks again everyone,
 Duhnis
 

Seals are relatively easy to change on that saw .As far as tuning short of reworking (porting )the best I can say is gut the muffler .No baffle cage ,no deflecters ,no screen .Retune the saw so it "4 cycles " and get with it .

That's a good ole saw .Probabley the last of the heavy framed made which include the 028,042 ,048 plus three 038 .038 av ,038 super and 038 mag which became the 380 .