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14th June 2013, 09:38 PM #1Intermediate Member
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Husqvarna 350 - bar bolts pulling through the case? What the?!
G'day All,
Picked up a nicely running used Husky 350 for a song from my local dealership. I knew it had the following issue, but couldn't pass it up for the money:
Original owner brought it in for a check-over, and was complaining that he couldn't keep the bar tight. Turns out the bar has been repeatedly over-tightened by the original owner, and this has resulted in the bar bolts starting to pull through the case a few millimetres which means the bolts actually protrude more than they're supposed to. This has also resulted in a small oil leak from the bar bolt area.
Apart from this, it seems like a great saw.
I'd like to strip the saw down, clean it up and try to rectify the issue.
Any thoughts or advice would be appreciated, or can someone point me in the right direction on this forum?
Have thought of putting a collar/shim or a washer on the bolt from inside the oil tank, to try and bring the bolts back to their proper spot.
Thanks in advance.
Phil
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14th June 2013 09:38 PM # ADSGoogle Adsense Advertisement
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14th June 2013, 09:46 PM #2
Not familiar with the Husky saw, but from experience, most saws I've handled have studs not bolts. So if it has studs, it would indicate that he has actually pulled the studs through the threads and depending on casing you may need to put some helicoils or inserts in.
Cheers
DJ
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15th June 2013, 12:59 PM #3Intermediate Member
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15th June 2013, 01:04 PM #4
Yes they are readily available, most engineering/bearing/hydrualic places stock them and some auto shops as well.
If you were closer, I'd offer to look and insert one if needed as I have various sizes here.
No real speciality tools need, just a tap wrench but a small shifter would do the job with careCheers
DJ
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15th June 2013, 03:05 PM #5SENIOR MEMBER
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I know on my Husky the flat head bolts push in from inside the oil tank, rather annoying if they happen to slide back into the tank.
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15th June 2013, 06:40 PM #6Intermediate Member
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15th June 2013, 06:43 PM #7Intermediate Member
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15th June 2013, 06:46 PM #8SENIOR MEMBER
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yes I have replaced them, and also had them disappear into the oil tank, bit fiddly but can be done with a pair of pointnose pliers
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15th June 2013, 08:20 PM #9
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15th June 2013, 09:51 PM #10Intermediate Member
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Thanks, that's good to know. Don't suppose you noticed if it was possible for the flat-headed bolts to pull through the casing?
If this IS what's happening to my saw, I'd be interested to know folks' suggestions for ensuring that the bar-studs/bolts remain in their right position.
What a great forum!
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15th June 2013, 10:04 PM #11
Two suggestion I'd make to start off with, is to always hold the tip of the bar up when tightening the nuts as this places the bar in the correct position with the right tension and to just snug the bolts up with finger tension not full hand pressure.
I use my thumb on the socket and fingers on the wrench, if needed I'll take some pics to demonstrate what I mean.Cheers
DJ
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16th June 2013, 01:32 AM #12SENIOR MEMBER
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From memory(i'll double check) the bolts heads should seat on a metal "plate"(for lack of the correct name) within the tank.
if you could take a few pics I might be more help. Are the nuts bottoming out before the bar is tight?
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16th June 2013, 08:33 PM #13Intermediate Member
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Thanks for your reply!
I stripped the saw down today and cleaned it thoroughly. I removed the steel 'plate' cover on the clutch side, and noticed that only ONE of the bar bolts is the issue. It's the bolt toward the front of the saw.
It protrudes out 5mm-7mm further than the other bolt, and has pulled the casing plastic out a fraction as well. This has caused the SMALLEST of cracks in the plastic around the bolt, and this appears to be where the oil leak is.
So to answer your question - yes, the front bar bolt does bottom-out on the thread.
I'll try to take some pics tomorrow and post them, but not sure if my 'post status' will allow me to or not.
I'm not sure how I'll fix the small crack around the bar bolt; perhaps heat that section, push it back into shape (hardly any 'pushing' required)? Perhaps I could then re-drill the bolt hole in the case and insert a helicoil?...
Dunno, I'll have another look and ponder tomorrow...
But any thoughts or revelations would be fab'...
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16th June 2013, 08:36 PM #14Intermediate Member
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17th June 2013, 12:34 AM #15SENIOR MEMBER
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Hi again, I checked on my saw, just empty the bar oil and visually inspect inside the oil tank. The rectangular bolt/stud heads should be seated into a metal c channel that is about 4 inches long, this is what stops the bolts rotating and pulling into the plastic when tightening the bar.
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