How about pictures of the muffler mod??? I just put a new PC on my 3120 and was thinking about doing the muffler. I would love to see what you've done
Sorry I didn't take any while I was doing it (forgot to do so in my frozen state of mind). I'll try to so so next time I'm tinkering with the saw.
If you ever find a place that actually carries the Walbro 1.16mm jet, let me know. I think the part number is 503 97 67-06.
I had a couple dealers try, including Madsns. I sort of know the main mechanic there and he tried in vain to get 1.16mm jets from their Husky source. His Walbro contact couldn't get them either, so he had to get some smaller jets to drill out when he was trying to work out some issues with a bunch of old new 3120K saws the railroad had found.
So to my knowledge, the only place that actually has them is ROW (like NZ). Even though they are listed in the IPL for the 3120. I would be glad to be wrong, though.
I guess I made a poor assumption when I said you might be able to get them from the dealer.
These are the guys I've used for my Husky parts with a lot of success. You can check with them. I placed an order with them yesterday for a replacement bar/guide plate, but I didn't pursue the jet... although I probably should have.
http://www.russopowerequip.com/parts-browse.asp
I don't know what the factory spec's are on a 3120, but When I'm working mine (which is not very often) I tune it to about 12,000 rpm's. When racing I take her up to about 12800 rpm's. Anything over 13000 makes me nervous.
The crank will let go long before the rod will.
I've got an adjustable carb on mine. There out there, and I highly recomend hunting one down.
Andy
Great info Andy! 13k was the number I was concerned about seeing as well. I'm now really intersted to see what she's turning in her current configuration. Anything over 13k and I'll open the jet up until it's south of that.
I've had a very hard time finding an adjustable carb. A little birdy (whom you know very well) told me a while ago that the carbs off the 3120k saws have adjustable carbs, but I've now looked at five of them and all had fixed carbs. If you find one, and don't need it yourself, please send me a PM!
I stopped by the Stihl dealer to check out the 3120 he has. He put a black coil on it but can't remember what was originally on there. The saw will fire and run for a few seconds then it dies right out. The carburetor has been cleaned. He doesn't know much about the history but says it doesn't even look broke in. I know this isn't much to go on but I would appreciate any advice on what to check. The serial # is 99 10000 79. I'd really like to pick this up, that thing is a beast!
That could be a tough one since being a dealer I would assume he knows what he's doing. Could be an air leak, timing out of wack from his ignition mods, carb, clogged fuel pick up, etc... any number of things. Although, if the price is right I'd jump on it.