Typhoon
ArboristSite Operative
I have around 4 hours on a new 562xp, and in comparison to my old 357xp, it has snappier throttle response, and starts much easier (usually 1 pull) when hot. Thus far, I am impressed. :msp_thumbup:
The truth about Auto-Tune and M-Tronic
- Thread starter Hustihler
- Start date
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Tzed250
Addicted to ArboristSite
No, I didn't mean that. I hope you won't begrudge me a little automation Randy. I'm fairly sure you depend on the ignition in your vehicle to advance correctly. As you can see, like most things, it's not black and white.
spike60
Addicted to ArboristSite
If you Stihl guys knew who they purchased their technology from, you'd be jumping off bridges all across the country. :smile2:
gcsupraman
ArboristSite Operative
The only problem with the M-tronic saws is once you run one you'll want them all to be M-tronic
Tzed250
Addicted to ArboristSite
I've heard things.
I have it on good authority that they know something about engines, have for some time.
spike60
Addicted to ArboristSite
So not Porsche:msp_mellow: I thought they helped Stihl out with the M-tronic system. Well I guess the only option left is ECHO.:msp_lol:
Officer's Match
Addicted to ArboristSite
Frankly I love my 441R C-M, it's easily the best running (and behaving) saw I've ever ran. Spot on perfect carburation regardless of temp/humidity/elevation/air filter condition/phase of the moon/coldcut expiration date/Lindsey Lohan probation status or any other factor. I for one do wish all my saws had M-Tronic, as I much prefer to work with 'em as to on 'em.
RandyMac
Stiff Member
No problem big guy. I do realize that many who run saws are clueless and won't notice if the danged thing is acting up.
The old Ford has Autolite's spark control valve on the carb, it works well if setup correctly and poorly if not.
deye223
Addicted to ArboristSite
so was it china or russia
ckelp
just being myself
the way to tell russia over engineers things then builds it with cheep materials..
china engineers it to be good then uses cheep materials to build it then saves money by using a cadaver for quality control
get it??
sachsmo
Addicted to ArboristSite
correct me if i'm off base here.
The M tronic seems to have;
Inputs,
tach
temp
WOT micro
Ouputs,
fuel delivery solenoid
variable timing
Not much input for the processor to work with eh?
There is no A/F feedback, So is a correct assumption that there are two modes, Start and WOT?
Guess with the "memory" it just stores pre-determined "recipes". Looks like a couple different PID loops to me.
The M tronic seems to have;
Inputs,
tach
temp
WOT micro
Ouputs,
fuel delivery solenoid
variable timing
Not much input for the processor to work with eh?
There is no A/F feedback, So is a correct assumption that there are two modes, Start and WOT?
Guess with the "memory" it just stores pre-determined "recipes". Looks like a couple different PID loops to me.
SawTroll
Information Collector
It is normal to use "high idle" like that, when the saw has been sitting for 10 mins.
SawTroll
Information Collector
No.
Hustihler
ArboristSite Operative
Thanks for all the good posts. I'm glad a lot of people are having good luck with both Autotune and M-tronic. I'm wondering now about the warm start procedure on the 562xp and 550xp. My dealer showed me and the instruction manual confirmed that for warm/hot restarts always pull out and up on the red button then push it back down, push in decomp and pull. Is this correct or is there another technique for warm/hot restarts? I'm wondering now if when you push down on the red button to stop the saw does it automatically sets the saw back to the run position. I'm also curious if there is a difference between a hot and a warm restart, even though I can't find any info in the instruction manual and my dealer never made any distinction between the two.
Tzed250
Addicted to ArboristSite
Believe me, I've heard it. "It was running great, then it just quit!"
Usually on my 562XP it'll restart warm on the first pull. If it doesn't then on the next pull I pull out and up on the red button then push it back down, push in decomp and pull and it will start. It took me a while to learn that because I didn't read the "correction manual". I always read it only if all else fails.
sunfish
Fish Head
Yes, when pushed down to kill, it automatically comes back to run. High idle work just like the old ones, choke on, then choke off.
