What's wrong with this clutch?

[klickitatsacket]

 

[thompson1600]

Wrong spring(s) would be the first thing I see

 

[Dan Forsh]

No expert, but shouldn't those springs all be the same?

 

[klickitatsacket]

This is a MS440 (1 of 3 with the same problem out of 7 saws) that a customer brought in. The previous shop tried to save the guy some money by putting 066 clutch springs to take up the slack in the worn out shoes. By doing this it threw the balance off and destroyed 2 of the 3 saws. The 2 saws that were destroyed had bent cranks .015 and .023 out. The 3rd saw besides needing the clutch replaced also had a worn out catch on the worm gear and a bad clutch drum. All three saws had problems with the cluch drums and bearings to a degree. The previous shop did save him some money, but in the long run cost him way more than if the job would have been done right.

Just a warning to those who might think about doing this; DON'T Do It!

 

[Dadatwins]

Just curious, what did they only change 2 of the springs and not all 3? Obviously they should have put in the right parts from the start but I wonder if they would have changed all three if it would have kept the shoes balanced and not caused all the extra damage.

 

[Ekka]

I deleted my post, and am going back to the climbing forums.

 

[klickitatsacket]

dadatwins, Not for sure but most likely it would not work if all 3 springs were shorter (too much tension) as it is, only the one weaker spring really moved

 

[Lawn Masters]

Yup, cut corners to save money like that costs more ultimately.
What do NEW 044 springs cost? like $5 each through Stihl? its not THAT much money to simply order em and replace.

 

[turnkey4099]

This is a MS440 (1 of 3 with the same problem out of 7 saws) that a customer brought in. The previous shop tried to save the guy some money by putting 066 clutch springs to take up the slack in the worn out shoes. By doing this it threw the balance off and destroyed 2 of the 3 saws. The 2 saws that were destroyed had bent cranks .015 and .023 out. The 3rd saw besides needing the clutch replaced also had a worn out catch on the worm gear and a bad clutch drum. All three saws had problems with the cluch drums and bearings to a degree. The previous shop did save him some money, but in the long run cost him way more than if the job would have been done right.

Just a warning to those who might think about doing this; DON'T Do It!

I don't get it. Just how much money do 3 springs cost? I know that Stihl parts run high but save money by substituting springs?

Harry K

 

[Lakeside53]

I don't get it. Just how much money do 3 springs cost? I know that Stihl parts run high but save money by substituting springs?

Harry K

It's not the springs... it's the shoes... The holes get worn elongated and don't allow the springs to have enough tension. Still no excuse though... Shoes are about $13 each, springs $2-2.50

Dean - take a picture of the shoe holes without the springs installed. Many have probably never noticed the wear.

 

[klickitatsacket]

here is a couple of pictures of the clutch shoes with out the springs. on the second picture notice the groove cut into the shoes.
http://i5.photobucket.com/albums/y186/klickitat/clutch_3705.jpg
http://i5.photobucket.com/albums/y186/klickitat/clutch_3705-1.jpg