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#Post#: 87667--------------------------------------------------
440 timing issue
DIR By: TheCounty
Date: February 13, 2021, 11:46 am
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440 Husky. Father-in-law got it near new second hand. Always a
real bear to start. Hard to pull over. Not on the weak side for
arm strength for sure. Never ran nice.
Got running, tuned up nice enough while running. Still hard to
start. Thoroughly cleaned, adjusted coil, etc. Same. Coil
appeared weak and not sparking up to snuff. New plug, same.
Installed new coil. Now it seems to backfire during pull start &
stopping motion dead. Hard on the arm for sure, esp when the
cord gets jerked back from your hand.
Managed to start it a few times, but it "spits" while running as
if it is definitely a few degrees to far advanced. Popped off
flywheel, key and keyway unnblemished, and fit
together nicely. Triple checked coil gap. Same. Tried opening
the coil gap a few thousands, Same.
Any Ideas, short of grinding off the key & retarding it bubba
style??
Cheers
ps ( Carb clean & sweet with premium fuel and oil )
#Post#: 87668--------------------------------------------------
Re: 440 timing issue
DIR By: 3000 FPS
Date: February 13, 2021, 3:03 pm
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Sure does sound like it is to far advanced. So CCW is the
direction of the flywheel. If you move the flywheel CCW you
will advance it more.
But if you move the coil CCW you will retard the timing. So
you can move the flywheel or you can move the coil.
If you decide to move the flywheel by modifying the keyway it
only takes a very small amount. I have taken a penny or a
nickel and cut off a small piece which is usually smaller than
the key used. This will allow enough slop to either advance or
retard the timing.
You will not know by how many degrees you are moving it with out
a degree wheel set up. But I am guessing 5 to 6 degrees of
retard in the timing is what you need. At least the penny or
nickel trick can get you in the ball park.
If the key is molded into the flywheel then you have no choice
but to grind it down. I would start with no more than half way
to start with.
#Post#: 87669--------------------------------------------------
Re: 440 timing issue
DIR By: TheCounty
Date: February 13, 2021, 10:03 pm
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3000 FPS, 5 to 6 degrees sounds exactly right, & key is molded
into flywheel. Moving coil looks to be more involved. Hate to
"bubba" it, but was kinda wondering if someone
else had to go this route. This saw, and 2 larger ones really
show how poorly designed/make Huskys have become compared to
equivalent Stihls.
Thanks for the reply btw. I'll let it sit for now but may go at
it in a week or two. I also may swap another coil in to be
absolutely sure it isn't a coil issue.
Cheers
#Post#: 87670--------------------------------------------------
Re: 440 timing issue
DIR By: Chainsawrepair
Date: February 14, 2021, 6:31 am
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Was it a aftermarket coil?
Seen this yesterday and had some 440 info for ya. Hope you didnt
buy aftermarket.
HTML https://youtu.be/enFxj0R5_Ik
#Post#: 87673--------------------------------------------------
Re: 440 timing issue
DIR By: 3000 FPS
Date: February 15, 2021, 8:09 pm
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So County if you get it figured out come back and let us know
what you did to get it going.
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