What's on your bench today?

[Mike Pinches]

To fit the 066 piston you will also have to remove a minor amount off the insides of the piston wrist pin holes as it wont fit over the small end of the conrod normally. You don't have to remove much.

Thanks for that I measured both yesterday and worked out it was about 1.5mm that needs to be removed. I have the measurements written down in the garage.

 

Why didn't you use the husky equivalent parts? The 281 and 288 pistons are the same, in 52 and 54mm respectively, although all technical data says the 2083 is 52mm and the 066 is 54mm

The 2083 is from before Husqvarna took over jonsered so there isn't an equivalent husky. I believe it's a partner design. The 2083 is definitely 54mm, though they did a 2083II in the US only which had a smaller bore. I did consider a piston from a 288 as it is the same length, however from the only dimensions I found it looked like the piston crown would be lower than standard reducing compression. I would also have had to get a small end bearing from a 288 to accommodate the larger gudgeon pin.

Whilst researching what pistons would fit I found a couple of people in the US who had had good success with the piston from on 066 which saved me from being the guinea pig. If I can find another 2083 for myself I could be tempted to try a 288 piston for comparison.

[spudulike]

I am not sure two weeks holiday was a good idea, been flat out since coming back.

 

Had an old 020 in, it has a bit of wear in the crank bearings but as these run directly on the crank, it probably wouldn't help too much so replaced the leaking seals and have given it a good going over and will be returned with the recommendation to use it as a backup saw - just too old to spend too much on.

 

Had a 395XP in, seized so cleaned the bore and fitted a new Meteor piston - pressure and vac tested, the inlet manifold clamp bolt was stripped so replaced it and lapped in a leaking decomp valve.

 

FS400 engine - seized, cleaned the bore and fitted a new OEM piston - rebuilt a rusty recoil and all good,

 

Stihl 066 Magnum - suspected air leak but pressure and vac tests were OK, found fine woodchip in the carb internal strainer.

 

Stihl 026 - won't start, pressure/vac tested OK and carb stripped, checked and cleaned - think a loosw airfilter may have stopped the choke sealing properly on start up - will see what tomorrow gives:thumbup:

[spudulike]

Had a good weekend in the end, the 395XP from my earlier post needed the carb cleaned, it just would not hold idle - kept dyingbut a good ultrasonic clean sorted it. The 026 need the same, revs kept soaring flatout but all seems OK now.

 

Sterted on two MS200Ts, the first one was a fairly old one, sounded a little dry and creaky on the recoil, fired it up and it had that hollow/dry sound that means only one thing - bad crank/crank bearings and lo and behold - the image below shows that the hardened surface of the crank has started to break down - one of the flywheel fins was missing so may have caused it but it was the clutch side so suspect over tightened chains as route cause.

 

On the image - look at the rough surface on one sideof the crankshaft next to the lobe!

 

Fortunately my spares included a flywheel and crank:thumbup:

[div_h]

I gave my two little saws a hard time yesterday, when the temperature got up they more or less gave up:thumbdown: but the ported 1 kept on going!! The little stihl was trying to stall and very boggy in the cut wasn't asking much of it to be fair.... And the little husky was flat like it was running out of feul but was fnear full and fine ten cuts before.....no more homeowner saws lol they are getting binned and get another semi pro type saw!!! They just don't cut it 🌲🌳

[spudulike]

I gave my two little saws a hard time yesterday, when the temperature got up they more or less gave up:thumbdown: but the ported 1 kept on going!! The little stihl was trying to stall and very boggy in the cut wasn't asking much of it to be fair.... And the little husky was flat like it was running out of feul but was fnear full and fine ten cuts before.....no more homeowner saws lol they are getting binned and get another semi pro type saw!!! They just don't cut it 🌲🌳

 

And what do you expect, the ported 346XP is a mad wasp of a saw and nothing else sounds like it - it sounds mad and cuts like it is crazy:thumbup:

[div_h]

Spud I ain't joking but I had nearly every neighbour out in the street yesterday lol I stop and looked around because you get that feeling people are looking, a crowd here a few there.... The noise is unreal! And my girlfriend txt me saying I think I can here your chainsaw....... She was just over 2miles away😂 love it!

[spudulike]

Spud I ain't joking but I had nearly every neighbour out in the street yesterday lol I stop and looked around because you get that feeling people are looking, a crowd here a few there.... The noise is unreal! And my girlfriend txt me saying I think I can here your chainsaw....... She was just over 2miles away😂 love it!

 

Anything with an engine that is working well, does it best without much silencing:thumbup: Hope your neighbours enjoyed it!

 

I once "retrieved" a large lump of Oak off the side of the roead opposite a pub...........holding a Wake:lol: The noise was enough to wake the dead but want the heck - sure the departed soul saw the funny side:lol:

[MATTMOSS]

I have been given a couple of bg85's that do run but have gone noisey and vibrate excessively, i think this is due to wearing of the big end bearing through poor quality 2 stroke oil being used, there is definitely excessive movement there.

This must be a common thing to come across in some of your workshops?

A new crank is around £60+ I can't think of any cheaper way to repair? Can any of you? And Do you think I'm right with my diagnosis? I've seen a few like this.

It's a shame the crank isn't the same as the bg86 as a mate has a seized one.

[div_h]

Anything with an engine that is working well, does it best without much silencing:thumbup: Hope your neighbours enjoyed it!

 

I once "retrieved" a large lump of Oak off the side of the roead opposite a pub...........holding a Wake:lol: The noise was enough to wake the dead but want the heck - sure the departed soul saw the funny side:lol:

 

You do good work Steve keep it up👍 might need to send these 2 heaps of poo your way..... Next year if you ever clear your feet

[spudulike]

I have been given a couple of bg85's that do run but have gone noisey and vibrate excessively, i think this is due to wearing of the big end bearing through poor quality 2 stroke oil being used, there is definitely excessive movement there.

This must be a common thing to come across in some of your workshops?

A new crank is around £60+ I can't think of any cheaper way to repair? Can any of you? And Do you think I'm right with my diagnosis? I've seen a few like this.

It's a shame the crank isn't the same as the bg86 as a mate has a seized one.

 

It is unusual for the big end to go - only seen one go! These blowers have a cast shroud around the flywheel and the bolts can come loose and clout the flywheel back side - worth checking other than that, worth checking the crank bearings - guess there is quite a load on the impeller side!