Author Topic: scored piston on a 345  (Read 463 times)

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Offline SawTroll

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Re: scored piston on a 345
« Reply #10 on: November 01, 2013, 10:14:17 pm »
....... 

I noticed the spec sheet shows the 345 hi rpm 12,500 and the 455 hi rpm 13,500.  I could be mistaken but it really sounds like that 345 revs higher than the 455.


Your Thoughts, would be appreciated.   ???

If it does, the carb may be set way too lean?

Offline mountainlake

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Re: scored piston on a 345
« Reply #11 on: November 02, 2013, 06:02:15 am »

  Start way rich and gradually go leaner until the cut the fastest(not rev the fastest) in bigger wood, if you get lean they will bog easy.  Steve

Offline rayster

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Re: scored piston on a 345
« Reply #12 on: November 02, 2013, 09:08:33 am »
Great information, I'll let you know how it turns out.

thanks
I get in trouble for looking at saws.  She thinks 6 is enough, for firewood and keeping the property trimmed. ( I really like this site )

Offline rayster

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Re: scored piston on a 345
« Reply #13 on: November 04, 2013, 08:03:46 pm »
Thank you very much, the videos and your advice were a tremendous help.

It idles a starts pretty well.  Still stumbles a bit on a trigger squeeze, and has loss of power in a cut.  Therefore it is getting better and I just need to work with it a bit.    For the first time it seems I am getting somewhere.


One would guess that a fellow who has 2 weed-eaters, and 4 chainsaws would have this figured out before now   ::)  . 

Thanks again, I will read more to pick up as much as I can.
I get in trouble for looking at saws.  She thinks 6 is enough, for firewood and keeping the property trimmed. ( I really like this site )

Offline 660magnum

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Re: scored piston on a 345
« Reply #14 on: November 04, 2013, 08:12:05 pm »
Unless you get some of that four stroke flutter, you still have it too lean?

You have to cut the limiter tabs from the needles?
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Offline rayster

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Re: scored piston on a 345
« Reply #15 on: November 04, 2013, 09:42:55 pm »
I get the 4 stroke flutter on the idle, and it's a slow idle.  So I believe the throttle and the low mixture is correct (or close to it).  I don't notice any tabs near or around the needles.  I will post a picture of them tomorrow.

thanks
I get in trouble for looking at saws.  She thinks 6 is enough, for firewood and keeping the property trimmed. ( I really like this site )

Offline rayster

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Re: scored piston on a 345
« Reply #16 on: November 08, 2013, 08:23:22 pm »
Sorry I didn't get photos of the needles.  However, I did go back and watch each of the videos a couple more times and payed close attention to the sounds.

Taking my time I went through the process.  The Low flutters and idles where the chain does not move.  After adjusting the High again; I get what sounds like a flutter or four stroke sound while wide open (not cutting).  When I put the chain to the wood; it slows a bit (under load), the flutter seems to go away and it does not bog in the cut.  In addition to this when I give the throttle a quick squeeze, the saw ramps the rpm band without falling on it's face.

I am very pleased with the results today.  As that, it is the first time I feel it acts 100% as it should.  I can press the kill switch to stop it, then lift the kill switch and the saw will start on the first pull (it had never done that before).  Did I mention that I was pleased?  ha

Here is a pic of my saws.  Top to bottom;

Husky 455
Husky 345  (this thread) bought used for $180
Stihl 192TC
Stihl Pole Pruner (not shown)

Thank you very much for your help.
I get in trouble for looking at saws.  She thinks 6 is enough, for firewood and keeping the property trimmed. ( I really like this site )

Offline 660magnum

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Re: scored piston on a 345
« Reply #17 on: November 08, 2013, 08:46:58 pm »
In the past, for many years, the braking point between two stroke and four (back and forth) was the magic reference point by which I set the high speed needle valve on two strokes. However, as time has passed, the breaking point between two stroke and four stroke has become less defined. Us old timers still identify it without problem but the new folks are having a harder time.

In addition, the manufacturers have added limited coils and the coil's limiting action sounds very much like four stroke'n, especially to a new guy. Therefore, the current trend is to set the chainsaws with a tachometer to a specified free running top rpm. Tachometers are closer to $100.
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Offline rayster

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Re: scored piston on a 345
« Reply #18 on: November 08, 2013, 09:54:08 pm »
I had read some information in another thread.  If I can save some cash, it would nice to have one of those tachometers.  Christmas is too close to be purchasing myself anything.  So perhaps next year.

Thanks Again
I get in trouble for looking at saws.  She thinks 6 is enough, for firewood and keeping the property trimmed. ( I really like this site )

Offline 660magnum

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Re: scored piston on a 345
« Reply #19 on: November 08, 2013, 10:45:21 pm »
When you set the needles on a hot summer day and ten get the saw out on a day when it is freezing, the needles will be too lean. So then you reset the needles and then next summer they will be too rich.

Changing the type of oil you run will sometimes require readjusting the needles.
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
Be all that you can be . . .

 

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