Hw90 inertia weight???????
Just got a second hand hw90 and it was a bit of a project and just put it together and it was dieseling and a bit hot so I've since bought a filling valve to adjust the power.

Have stripped it today to see what's what, and I've not found the inertia weight in the piston which I've read about?

My question is. Does all hw90's have the weight inside the piston or do some years come without?????
Chambers seem to show the weight on there exploded diagram so had me a little confused

It did shoot smooth and not harsh.

Thanks for any help,

Daniel