What's on your bench today?

[spudulike]

Its pretty low hours really, had it apart today couldn't see anything obvious, I will check tomorrow to see if the shoes are sticky. thanks again

 

You usually only see wear on clutches on high hours saws or very big saws used on long bars that have been leant on hard. Yours doesn't sound like this. Worth checking the shoes are not stuck

[TheHungrySquirrel]

You usually only see wear on clutches on high hours saws or very big saws used on long bars that have been leant on hard. Yours doesn't sound like this. Worth checking the shoes are not stuck

 

 

Are checking the shoes an easy job spud??

 

Mines a year old and runs in coppice most days so has taken some abuse

[spudulike]

Are checking the shoes an easy job spud??

 

Mines a year old and runs in coppice most days so has taken some abuse

 

There are usually specs as to how much wear a clutch can have but it is usually only heavily used very old saws that will wear a clutch down that much.

 

It is usually a case of popping the springs off and making sure the shoes move OK, that there is no build up of crud around the arms the shoes move on. You need to check that the outer surface of the clutch is dead flat, I have seen big ridges form on larger saws and these ridges form on the inner clutch drum as well but we are talking 5-10 years of felling and big rings on large 95cc saws rather than small ones.

 

Other than that, the central boss can sometimes lose parts of its arms, seen this before and needs replacing.

 

I usually use a little copper-slip grease on clutches, just something I do.

[TheHungrySquirrel]

Cheers spud if I can I'll check it out tomorrow.

[flatyre]

Or just do a muffler mod by opening up the outlet a little - don't go too mad otherwise it will sound bloody loud and have little more performance than just opening it up a little.

 

Not worth working on the engine - not an easy one to strip down.

 

Had to strip it down to get the damaged piston and barrel out, more awkward than I thought but done now, it should be a handy little saw to keep in the van, my 136 I got off the bay for £5 was worth its weight in gold for the money it made me.

[BishBashBosh]

Opinions please gents.

 

The photo does exaggerate the scoring slightly. To the eye the striations are bright and just a little deeper than the cylinder honing marks.

 

New saw, never run by me, and no evidence of it being run since the factory*. Having never had a brand new saw, is this normal and the bore will clean up during bedding in?

 

Thanks for any advice.

 

*[zero odour from the fuel tank, oil tank has never been used, just a smidge in the pick up tube, rim & clutch cover have never seen a chain etc].

[Stubby]

Pics blurred but I would not think that is right . Might bed as you say but should not be like that from new .

[Sawchip]

Opinions please gents.

 

The photo does exaggerate the scoring slightly. To the eye the striations are bright and just a little deeper than the cylinder honing marks.

 

New saw, never run by me, and no evidence of it being run since the factory*. Having never had a brand new saw, is this normal and the bore will clean up during bedding in?

 

Thanks for any advice.

 

*[zero odour from the fuel tank, oil tank has never been used, just a smidge in the pick up tube, rim & clutch cover have never seen a chain etc].

What hole is the pic taken through ?

[BishBashBosh]

I'll try another photo, it's taken through the plug hole.

 

Being a new saw I don't think it's reasonable to take the exhaust off to investigate if I end up returning it.

Thanks for the replies.

[BishBashBosh]

Not easy to photograph through the plug hole! I've a new found respect for gynecologists.

 

Top Photo: shows the top of the exhaust port, marks extend from the upper edge of the port to approximately 15mm below the top of the cylinder.

The area of the cylinder visible is no more than 20mm across, so it doesn't look quite so bad in reality.

 

Lower Photo: The closest view I've managed and it appears that the vertical marks lie beneath the cylinder honing.

 

I'm erring towards thinking they are the result of the de-burring process after the ports are milled, but it'd be nice to get an informed opinion.

 

Thanks again:001_smile: