3120 questions

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pwoller

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So I have the 3120xp and I opened up the exaust a little. Started it and at full throttle out of the wood it bounces off the limiter at 9300 rpm. Since the high jet is not adjustable does the limiter protect it from running lean? I've never had saw that bounces off the limiter like this one but then again this is only 9k compared to 12k or more of the other saws. Do I need to worry about running the saw lean or am I just overly concerned with my fairly new investment.
 
So I have the 3120xp and I opened up the exaust a little. Started it and at full throttle out of the wood it bounces off the limiter at 9300 rpm. Since the high jet is not adjustable does the limiter protect it from running lean? I've never had saw that bounces off the limiter like this one but then again this is only 9k compared to 12k or more of the other saws. Do I need to worry about running the saw lean or am I just overly concerned with my fairly new investment.

The guys over in the chainsaw section would be able to answer this question better. If it was my saw I would leave it stock, but that's just me. You could always switch the carb to an older adjustable model.

Congrats on the new saw. :clap:
 
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So I have the 3120xp and I opened up the exaust a little. Started it and at full throttle out of the wood it bounces off the limiter at 9300 rpm. Since the high jet is not adjustable does the limiter protect it from running lean? I've never had saw that bounces off the limiter like this one but then again this is only 9k compared to 12k or more of the other saws. Do I need to worry about running the saw lean or am I just overly concerned with my fairly new investment.

What you have effectively done is enabled the saw to breath more easily which means more exhaust gets out of the saw. This pulls more air into and to some extent this pulls more fuel but only up to a point since the H jet has a fixed orifice size and then it will become too lean.

RPM has very little to do with leaness or richness so I would be worried. You need to get hold of another couple of main jets and try reaming it out a little bit to get it back on the rev range so it doesn't hit the limiter so easily. A milling saw should not be hitting the limiter at otherwise you have no idea where you are are in terms of being too lean.
 
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Those are fixed jets and they are not changeable. You'll have to drill the main jet.

Search the chainsaw forum and you'll find a few people who have done it.

Also you can look up changing the coil to a non limited one.
 
The huskies are coil limited so to fully take advantage of a muffler mod you will need a non limited coil as well as resolving the non-adjustable H limit issue.

You would be wise to also consider adding a head temp guage to keep an eye on the well being of your investment.
 
The huskies are coil limited so to fully take advantage of a muffler mod you will need a non limited coil as well as resolving the non-adjustable H limit issue.

You would be wise to also consider adding a head temp guage to keep an eye on the well being of your investment.

Great idea what would a dangerous temperture be?
 
Mine smells like fish , peanut oil used . Seams to be working and i still got 3 gallons . Yes my personal opinion canola should count . so where do i find head temp guage ,milling with 88 in summer and in experance i think it would be good insurance . John t
 
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I googled it and found some fairly small ones that dudes are using on their ultralight planes.
 
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