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#Post#: 87104--------------------------------------------------
Husqvarna 359 Problems
DIR By: Yukoner
Date: September 2, 2020, 1:15 pm
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New to the forum so be gentle :)
I have an older 359 Husqvarna that is giving me grief and I
can't seem to figure it out.Two main issues first being that it
will not start unless I pour fuel into the carb and then will
only run long enough to burn through that small amount. I've
pulled the carb (multiple times) cleaned it rebuilt it and still
no start. I even bought an after market Chinese carb from ebay
to try and still nothing. I had pull the cylinder off last
winter to replace the intake manifold that had a service
bulletin against it. Can't remember the reason but I think it
was because of plastic/clamping issues letting air by but don't
quote me on that. When I put it back together I threw new rings
at the piston just cause. New gaskets all around. So the engine
seems fine other that it will not pull fuel into the carb. I
pulled the fuel line and cleaned the tank the filter looked good
and seemed clear so I put it back in with the fuel line cut back
a little to make sure I was not getting air along with fuel at
the carb connection. STILL NO START!!! I'm out of ideas my first
thought was the fuel pump bellows in the carb is compromised in
some way but all looks fine. No impulse input on this carb
either (I think that's the muscle to pump fuel if I understand
it correctly)the intake has a hose coming off it and I pulled it
and made sure it was clear still no joy.
Also the throttle trigger linkage seems to be busted, the lever
that comes from the handle to the carb comes out of the handle
when you pull the carb. Seems some internal plastic piece has
broken inside the handle and it only goes back in and works if
you hold your tongue just right but it doesn't springback on
release on the trigger like it should but that's separate from
the main issue obviously. I almost have given up so much so that
I took it to a small engine repair shop thinking maybe I'm an
idiot and an "expert" could find out what was wrong. That was a
waste of time and money because as soon as he saw the throttle
linkage issue he stopped work and called me and said that the
handle is pressed together and you can not repair replace
trigger assy pieces. He didn't even attempt to diagnose the
starting issue. From my research it looks likely that you can
replace the whole trigger spring lock assy and not have to throw
the saw away. So I figure he didn't really want to work on it in
the first place and this was a convenient excuse.
So question one what should I do to get it to start?
Can I replace trigger pieces without having to buy a whole new
handle/fuel tank assy?
I'm a mechanic (airplanes/helicopters) so I'm losing my crap
that this simple little machine is not cooperating with me.
Any help would be greatly appreciated.
Thanks
#Post#: 87105--------------------------------------------------
Re: 359 Problems PLEASE HELP!!!
DIR By: Spike60
Date: September 3, 2020, 6:10 am
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You may, and likely do have multiple things going on. That shop
is a joke for one. The three pieces in the trigger assembly are
all replacable. Trigger, spring and latch. If either the trigger
or latch breaks, the broken piece usually stays in there
limiting movement. To have a look at what's going on, remove the
latch by using a small screwdriver to open the slot in the
handle just enough to allow the latch to rise past it's 2 little
stops. Then take it out by pullijg it back. Unlike many saws,
the 359 latch is not pinned into the handle. The plastic on the
rear of the throttle link itself should be examined to see if
it's moving or the end is kind of smooshed in. On a saw with a
lot of time, they often need to be replaced. The other thing
that affects throttle travel, is a loose rear mount. There are 2
screws to tighten the mount, and you need to remover the outer
screw in order to tighten the inner one.
But that has nothing to do with the starting issue. First thing
you should check is the small impulse line that goes from the
partition wall to the carb flange. If it's off or torn, the saw
will fire on the prime, and maybe even choke, but will quickly
stall after that. It's small and snipping that small amount from
your fuel line will solve the problem in a pinch.
The Chinese carb...ERRRR! They are so hit and mis. Don't assume
it's OK. I have a rule in my store that anything that comes in
with one of those cheap carbs, that the starting point for us is
we will replace it with a proper OEM carb or we won't work on
the unit. 2 and 4 stroke. I understand that it's "worth a try"
for the customer, but we are too busy to waste time de-bugging
that stuff.
About all I can think of without having it in front of me.
#Post#: 87107--------------------------------------------------
Re: Husqvarna 359 Problems
DIR By: Yukoner
Date: September 4, 2020, 12:32 pm
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SO got the saw back still no start!! I'm being told that this
may be an ignition issue and the CDI may be on its way out. I'm
not sure if this is a possibility but its plausible. If the
ignition is strong and then gives out once the saw gets a little
warm that could be the issue. I'm skeptical but I'm open to the
idea. Has anyone had CDI issues similar to this? Is there a good
bench check I can carry out prior to throwing money at a CDI
that might be fine?
Also I told that the crank seal may be bad and the extra air is
leaning out the mixture to much for the saw to run. Is this a
common problem to an older saw? I'm told the time and money in
rebuilding it from the crank on up is not worth the trouble.
Thoughts? I'm not afraid of the job but my time is more valuable
than the cost associated with a rebuild. I rather like jobs that
bring old stuff back to new condition. Not to mention the money
saved and one less piece of garbage on the pile is always good.
But I'm about ready to call it on the whole thing and get a few
bucks for it in the condition its in now and get rid of the
headache. Any one have an idea where to go from here?
Thanks
#Post#: 87111--------------------------------------------------
Re: Husqvarna 359 Problems
DIR By: Spike60
Date: September 6, 2020, 6:58 am
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This is more than a little confusing here, and why online
diagnosis is so hard to do. Your second post almost sounds like
you are describing a different saw, and combined you are
throwing out too many possibilities to give an intelligent
answer.
Initially it's a fuel problem, with a saw that will fire only on
the prime you pour into it. Now there's a spark issue? And maybe
a crank seal leak too? Is the shop you are taking this saw to a
Husky dealer? Did he actually preform a test of some kind to
determine that there may be crank seal leak? Sounds to me like
he's guessing. It might be this, it might be that. How could a
bottom up rebuild be part of the discussion when nobody even
knows what's wrong with the saw? You need to have someone who
knows what they're doing look at this thing. A competent shop
doesn't say it "may" be a half dozen different things.
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