What's on your bench today?

[spudulike]

I also have an 039 Stihl on the bench, came in as bad running after using Aspen, checked out the piston and it is toast! Probably been like it for a while as the rings looked free.

I hate working on these saws as you have to dismantle the whole saw to get to the piston. I pressure tested the seals thoroughly before dismantling so I don't get caught out!

 

For those that don't know, to get to the engine, the handle and all AV comes out, the muffler off, carb removed, top cover and airbox removed, oil pump and chain brake band off, side cover and upper cylinder shroud cover off and then the damn bar stud (think that could be slightly rearranged)has to come out and that is a pig on this saw.

 

I tried the two nuts locked trick and they keep slipping - I have now locked them on with threadlock and will try again tonight. I do have a new one on order so a bench vice may be the answer or stilsons on the little bugger!

 

The engine than comes out after the four retaining bolts are removed from underneath!

 

Piston on order and then...lets do it all again but backwards:001_rolleyes:

[wyk]

I won't touch those. Stihl needs to learn a thing or two from Echo on how to make a proper clamshell. The old McCullochs were good, too.

[peatff]

I also have an 039 Stihl on the bench,:

 

A friend of mine has one with a chip out of the piston top but it still runs reasonably so it gets left alone. He will have to do it eventually though.

[spudulike]

A friend of mine has one with a chip out of the piston top but it still runs reasonably so it gets left alone. He will have to do it eventually though.

 

Good luck on that one, the customer gave me a maximum budget, my repair was advised to be more and unfortunately:sneaky2: the budget was changed:lol:

[maxlor]

my poor ms 660

[spudulike]

my poor ms 660

 

A bit blurry but reckon it would clean up!

[spudulike]

Did I tell you how much I hate Stihl 039/MS390s.......

 

I always have issues with removing the long bar stud that goes through the plastic cradle from the bar mount in to the engine.

 

The one I am working on, looks like it has been worked on before at some stage and guess what, the guy has put a nice big dollop of thread lock on the bar stud....got to be careful how I spell that:lol:

 

I have used the normal two nut method to shift it, decent grips on the inner flange, heat, oil, drilled and pinned it, will it shift? The HELL it wont Grrrrr:sneaky2:

 

In the end, I ground off the end with an angle grinder, drilled off the recessed flange with some very useful Colbalt drills, removed the cylinder and drove the butchered stud through the plastic cradle and removed it from the lower clam crankcase by grinding flats on it and putting it in the vice!

 

Got it all done in the end but what a bitch:thumbdown:

[mikerecike]

This is my self made oilpump bronze gear puller :-D

 

Be good to see a vid of how you use that👍

[spudulike]

Be good to see a vid of how you use that👍

 

Simple, the jaw type thing goes round the back of the worm drive and the bolt pushes on the crank end and pulls the gear off:thumbup:

[chazzerb]

Hello,

 

This might be a stupid question, but could someone please tell me how to change the drive sprocket on a Husqvarna 41. I have bought a 3/8 Lo pro one because i want to put my carving bar on it.

 

Thanks.