Yamaha Jumping Jacks

[Ric Brekne]

Hi Marcel

You just have to take them out, lower there tension (or use shorter 
springs if you like) and put them in again. Sounds like more work then 
it really is.  Action on the bench, bridle straps unhooked and perhaps 
an hour doing the job. At least thats the way I do it.  I never found a 
tool that let you do this with the springs in place.

With good jack center pining, you dont need very much spring tension at 
all. Certainly not more then the hammer butt can easily push  (via the 
jack top) out of the way as neccessary.

Cheers
RicB

Marcel Carey wrote:

Were you talking about butt springs or really jack springs. If you were
talking about jack springs, how do you regulate them? I'm trying hard to
figure out a way to do this, but it doesn't come to me. Could you
explain please.

Thanks,

Marcel Carey