Got an old B&D 22" Autostop hedge trimmer which won't
lock. After pushing the top button toward me to get it running,
I had to hold the on button all the time. I opened it
to see how it won't lock and couldn't tell how it works.

Is there a diagram to show how it is unlock and how it
is lock by pushing the top button.

Thanks.

kl, June 2009