DK45SE owner... how about a 6 foot bush hog (rotary cutter) ?

[Jose G]

I would, but I have an HST, only Brake, forward, backward pedals that's why I use the 3 pts lift as a panic button with the cutters, I could use the PTO switch but I never think about it hehe

 

[joe48]

ok first off rule of thumb on most PTO equip. is 5hp per foot of cut; so a 45hp in theory should easily handle a 9ft hog in all but the heaviest wet grass etc. SO 6FT SHOULD LOAF.
next even with a 6ft you have a very large moment of inertia to over come on startup. the blades, shaft ,stump jumper are all heavy steel. It takes a lot to get going (notice how long it takes for it to come to a stop, that should give you a clue.)
I have a CK20Hst, I engage PTO at 1000-1200 rpm, then slowly let clutch out, then increase rpm to PTO speed. Unless your 45 is way different that should work for you(or see what manual says).
I do not like to engage PTO at full rpm, puts a lot of strain on whole drive train especially if you just let clutch out or engage electric switch. I've PTO's twisted off when that's done too often.
As far as stopping just shut of PTO and let mower coast to a stop, DON'T GET NEAR BUSHHOG, OR LET ANYONE ELSE GET NEAR, IT WILL NOT STOP FOR A FOOT.

 

[joe48]

oh yeah I forgot to mention that I run a 4ft on my CK20 and routinely knock down and chop 2-3in saplings and bushes. a ck20 has about 16hp on PTO.
I wish sometimes I had a 5ft when mowing pasture type grass.

 

[ksbrdmkr]

I run a 7 foot Rhino brush cutter with my DK45SE HST, works fine for most mowing, for faster mowing in the heavy grass/weeds I put on the TN55 new holland. Yes I like the hand clutch on the NH so when engaging with the DK45 I slow the rpm to around a 1000 and don't worry about how low the rpms go as long as it keeps running.