ms260 clutch question

[coneycatcher]

Thanks for the replies guys I will strip it over the weekend and take some pics hopefully this will shed light cheers rob

 

 

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[coneycatcher]

Took some pictures tonight hope they come out ok springs look fine to untrained eye is the anything that jumps out as looking out of place thanks rob

 

 

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[Ray1]

It could just be the light on the photo or my eyes as its early, but those clutch springs look far too stretched.

[Lumberwolf]

Strange... The springs don't look stretched but the shoes are sitting pretty far apart

 

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[Ray1]

Agreed the shoes look too far apart, Has it had a new carrier fitted? this could be the wrong size causing the shoes to be too far apart and the springs to be over stretched and when the saw is running, the springs dont have enough give in them to allow the shoes to fully touch with the sprocket causing it to slip when in the cut.

[spudulike]

Not sure what others are seeing but it looks fine to me - this is an image of an OEM unit: -

 

Looks as it should IMO, it may be worth putting a vid up on the site as to what it is doing as this sounds a bit weird!

[peatff]

If the springs were stretched it would cause the opposite effect to what he is having and allow the clutch to throw out too easily. Is the inside of the drum getting oiled or greased allowing it to slip ?

[spudulike]

If the springs were stretched it would cause the opposite effect to what he is having and allow the clutch to throw out too easily. Is the inside of the drum getting oiled or greased allowing it to slip ?

 

Very true - what happens if you rev it full tilt and wang the chain brake on? I if the clutch is a bit dodgy, you would expect the chain to stop and the engine to still pull higher revs than would be expected.

 

Normally the saw revs are stifled as all power is lost - if yours still revs out, you have massive clutch slip - don't do it for any length of time as it will start producing a lot of heat.

 

IMO, grease and oil never really causes any discernible amount of clutch slipping if the parts are in good condition.

[predator]

Could it not be a tight chain when warmed up as its just been rebuilt etc adjusted up to much all looked well in the pictures

[peatff]

IMO, grease and oil never really causes any discernible amount of clutch slipping if the parts are in good condition.

 

Yes, just trying to think of a way to understand what is happening because the only other way is if the clutch is detached from the crank and if the threads are holding that is not going to happen. It does sound weird and a video would illustrate better. Only thing I've had like it is when the chain has pinched in a cut and saw still revs with no movement.