I have a jobmate pressure washer which has developed a hairline crack
in the shaft just after the trigger handle. It sprays water and
therefore loses pressure when using it.

The crack is about 2" long and the handle is made of some sort of hard
plastic.

I was wondering about how to repair it?

I was considering a piece of metal rounded to fit the curvature of the
rod where it is cracked and then maybe JB weld and hose clamps.

But I was then wondering if perhaps there is some sort of adhesive
which would actually dissolve and bond the two surfaces, or something
better than JB weld.

Any ideas on this one?

thanks!