Rattly husky 61

[bettybobbymeggie]

Evening all,

 

This is my first post on this forum. I have an old Husky 61 (c.1987) that starts and runs but it is noisy - the usual clatter you get on tickover from the clutch with the brake off is normal for this saw but with the brake on it tick's over quietly. The noise I don't like comes at full throttle and sounds rough.

 

I have removed the cylinder and piston which was lightly scored and will be replaced. I am doubtful this is the source of the noise which I think is lower down. The crank itself has no play at all and the needle bearing feels good. The only thing I noticed is if I turn it over by hand (piston off so just moving the crank shaft with my fingers on the piston rod - clutch and flywheel still in place) I can hear the ball bearings clicking into place - are these not quite tightly packed?

 

I have a second 61 (c.1986) which runs sweet and is actually the saw I did my Lantra training with. I was wondering if it would be an idea if I swapped the top end and piston to see if that eliminated the noise?

 

Apologies for the stupid questions, any suggestions would be welcome!

 

Thanks,

Jake.

[peatff]

Why would you strip a perfectly good saw to try to fix an old clunker ? If you can hear the bearings then something is wrong with the bearings, swapping the piston and cylinder will not do anything to alleviate that problem.

[spudulike]

sounds like a bearing cage has collapsed - surprising it didn't take out the cylinder. Simplest way of finding out is to pull the seals and look but you will only see anything if the seal is a large one. The flywheel side one is mounted in a mounting plate, I think the other one may be in the oil pump!

Better than stripping the bottom end.

 

[Stubby]

Just send it to Spud then you will have 2 perfectly good working saws . Simples .

[woody paul]

Is it with chain moving or stationery. 

[bettybobbymeggie]

1 hour ago, peatff said:

Why would you strip a perfectly good saw to try to fix an old clunker ?

I was just going to do it to diagnose the problem but it sounds like the bearings are shot so I will skip that.

56 minutes ago, spudulike said:

sounds like a bearing cage has collapsed - surprising it didn't take out the cylinder. Simplest way of finding out is to pull the seals and look but you will only see anything if the seal is a large one. The flywheel side one is mounted in a mounting plate, I think the other one may be in the oil pump!

Better than stripping the bottom end.

 

Good tips, thanks. I'll have a look tomorrow.

44 minutes ago, woody paul said:

Is it with chain moving or stationery. 

Moving.

 

Thanks for the help!

[adw]

Spud is quite correct the drive side seal is in the pump housing, turning the crank with the flywheel connected you will feel a lumpiness as it passes the ignition unit, could this be what you are feeling? the bearings are just 6205s and woul.d require splitting the cases.

[bettybobbymeggie]

Thanks for your reply. No I know the lumpiness from the coil magnet but its the click of a bearing I can hear when I turn it. I was hoping I could replace them without splitting the case though, damn!

[woody paul]

Why I asked if when chain moving was had a chatty noise on my 61 turned out to be bar plate ( thin plate which goes between bar and crankcase at bar mount) had got bent and was rubbing on chain rivets as chain went round. 

[adw]

Sorry should be a 6202 bearing, bloody old age!