MustangMike
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We need to see it against a TM ported 064!!!
Saw video thread
- Thread starter Deets066
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sounds lean for sure but slowed down with more fuel. still gonna try and richen it up some more when i get it out again.
MustangMike
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I used to have a saw that just like running lean also. Richining it up just slowed it down.
ferris
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Here is a good thread on As about a more lean tune
https://www.arboristsite.com/community/threads/064-av-max-revs.304656/
https://www.arboristsite.com/community/threads/064-av-max-revs.304656/
Sir yes sir. I love me some science and stuff. How tight do you want it?
Since we're being sciency, I'll need a hypothesis prior to testing.
Bigmac
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I would try .018, and check were it’s at now, it’s it currently .028? Or .032? Or....?
Idk I was just curious to see if it’s possibly spark isn’t good enough to burn a slightly rich mix, I have seen it happen in many applications, and you mentioned it was a little erratic and temperamental. Sometimes weak spark can cause issues like that. May not be it but it’s easy to test. Have had high compression motors have issues with spark and rpms, worth a shot.
It's certainly worth a shot. I'll measure it tighten it up and give it a try.
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The impulse circuit that I drilled into the carburetor… Is it completely clear?
Just spit balling trying to figure out what it might be
malk315
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This is one of our worksaws I gave to Mason to go through -- OE 346, a little history:
- Stock w/ 45 CC top end bro lent it to a friend who returned it scored to hell... straight gassed likely or other lean failure.
- My brother gave it to friend who is a husky shop out of his house who rebuilt it w/ the 45 CC top end. Used it for tree work for several years.
- Started having restart issues and a bit tired -- I took it after husky OEM top end prices came way down and put 50 cc OEM cylinder / piston, new stock muffler, new genuine Zama EL18B carb, new intake boot, new fuel line, impulse, filter, gasket delete.
- Ran it like this for a couple of years tree work every weekend -- she did well.
- Started having some restart issues / bogg issues apparent fuel delivery.
- I replaced line, filter, impulse hose, tank vent, and added bull horn muffler -- piston looked good, strong compression.
- Thought I had it fixed but when it got warm on the job it would go lean.
- Hired Mason to look at it -- found the decomp was a little loose (how the heck did I miss that!) and the boot wasn't quite lined up right w/ impulse area that mates to jug. I think it was good enough to work well for couple years and over time lost ability to draw fuel well -- this would explain why it would do well w/o a vent installed and then the bit of drag introduced by a new tank vent would create the periodic lean problems especially when warm but we caught it before wrecking it.
- Mason changed boot, tightened decomp, did some port work, and a few other things -- seals are ok and carb is good which is great.
- In the above video it sounds sweet -- one more tank to make sure she's work ready and the guys will enjoy having this saw back in the fleet.
- Big thanks to Mason for looking at this saw for us... I've learned more here too! I've got our other 346 that the tank / handle is a mess (broken and taped, trigger a mess) and I have a used tank I picked up from chainsawr and going to do lines, filter, and vent. That saw is the nmurph 346 we call the "murder" 346... The one Mason just worked on will need to be named "manslaughter" perhaps... she's rippin!
malk315
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They are our babies Jeff... they are to me! The 262 I have we are original owners she's 30 years old
I hadn't run her much since cylinder cleanup of some transfer and rebuild of the 87 carb. Ring seated and compression is like 220 now... rippin. She stood in for the 262 we keep on the truck recently and Mason will be taking a look at that 262 for us also... it got scored up but that saw owes us nothing -- it's been a goto saw for us for 2 or 3 years now and we picked it up for $230 from a guy in CT just looking to get rid of a perfectly good 262! That one was stock s/ 120 carb -- has muffler mod Mason did as Mason was the one who found it in CT.Cheers.
malk315
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@huskyboy Mason curious what RPM piss revs were showing and if you remember what RPM in the cut? Chain was sharpened by me from last outing when Kevin made a few cuts in the bucket chunking down a tree and she went lean so we stopped before damage... thus chain was basically fresh edge -- 0.325 Oregon 21LPX. I'm excited to try new chain from Oregon that is 0.325 version of LGX.
malk315
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The 4 cycle in the vid during piss revs sounded so nice. Will enjoy listening to it from the ground next thing Kevin chunks down from bucket
