my 18" whirl-a-way rotary has lost most of it's pressure, i have checked the nozzels they are ok, there are no leaks as i can tell, the rotary arm seems fine, & there is plenty of grease in the rotary, i used it yesterday on some imprinted concrete and it was leaving circles the arm only seemed to be going round at half speed,
anyone got any idea's?
regards,
jim.