we run  a   grain vac  with the  1955   and have not had a  pto smell with it either     but  it does   make the motor HOT!...

we  can't figure the smell out... it  is  a clutch smell   and not  a  belt smell.. ( I konw  I know  they are similar)   but the  belts are  back and the smell is up....

I  use  a  1655   most of the  time to bale---    and our baler  pulls   some but not like   either of our  mowers..