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#Post#: 89267--------------------------------------------------
Stihl MSA220
By: pleasant Date: June 7, 2022, 9:02 am
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Hi guys. Just taken into the workshop a near new (still on
original chain) Stihl MSA220 with the AP300 battery. Battery all
charged up, but chain motor not going and chain not rotating
when operated. I thought it was customer using it with the
chainbrake activated, so de-activated it and still nothing- just
a high pitched and faint electrical weeeeee sound when switches
depressed. Symptoms were still as if the chainbrake was still
activated, so removed the chain cover and was pretty clean under
there, so removed bar and chain and tried moving clutch sprocket
by hand as was pretty solid even without chainbrake on. Got it
to rock back and forth a few millimeters, then tried the switch
again and the sprocket jumps forward for a millisecond and stops
then you get this very high pitched electrical weee sound, as if
the battery is trying to do its job but the locked sprocket is
preventing it in doing so. Any ideas what could be locking the
sprocket with the chainbrake deactivated? Not done one before so
don't want to start taking apart stuff that doesn't need to.
Thanks.
#Post#: 89275--------------------------------------------------
Re: Stihl MSA220
By: Chainsawrepair Date: June 11, 2022, 8:47 am
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Going to share on my chainsaw repair group on facebook. Lot
more folks working on these new battery saws.
I'll share answers that seem to make since for ya.
#Post#: 89276--------------------------------------------------
Re: Stihl MSA220
By: Chainsawrepair Date: June 11, 2022, 12:05 pm
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= Is it at a dealer? Should be a warranty.
By pass the switch see if it works then. But sounds like a bad
motor or broken drive gear that's grinding
#Post#: 89277--------------------------------------------------
Re: Stihl MSA220
By: Chainsawrepair Date: June 13, 2022, 6:20 am
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[member=3477]pleasant[/member]
Stihl tech says = There is no drive gear. Stihl battery tools
are direct drive brushless motors. Can be lots of things...I
just had an msa90 trimmer come through that the housing was
rubbing the motor just enough to cause it to bind and done exact
same thing...the whine is typical to a brushless stalling.
Noone outside of a dealer is going to get it fixed because of
the techline support needed.... There is no real service manual,
most of the diagnostic info is internal memos and experience.
#Post#: 89278--------------------------------------------------
Re: Stihl MSA220
By: ray benson Date: June 13, 2022, 8:26 am
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MSA220 small service manual
HTML https://www.mediafire.com/file/5xuz7158dd47ogr/MSA_220_sm.pdf/file
#Post#: 89280--------------------------------------------------
Re: Stihl MSA220
By: pleasant Date: June 14, 2022, 3:22 pm
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Thanks Ray. The manual is really helpful.
Much appreciated
#Post#: 89281--------------------------------------------------
Re: Stihl MSA220
By: pleasant Date: June 14, 2022, 3:28 pm
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I did forget to add, the battery is fully charged and showing 4
green full charge bars when status button on the battery is
depressed off the machine. When fitted to the machine it flashes
3 red bars.
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