hello i would like to know at what rpm do you engage and disingage your mower decks, i have a 2380 kubota i just bought with a 54 inch mower i was never told at what rpm to engage and disengage the mower without hurting the clutch. i had a 316 jd for 35 years and turned the mower on and off at idle and never had a problem , but how do i enguage and disengage this kubota / any help would be healpful ????