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Thanks. I think part of the issue here is I can't read a tach, lol

This helps so I know I should be seeing 540 with no load. My wide open throttle would be over 3,000 rpm---my rated rev is only 2,600 rpm--maybe my engine rpm tach is off?

Yes!

Well...loaded the WSM and verified the PTO setting is correct, so its got to be something else. Lead service tech is supposed to come out to house this week or next to check some grinding sound/feel while driving across slopes, so I will have him look into it further.

I have the HST. I bet you are spot on. I have the assembly instructions that shows how to get into service inspect mode and make changes, but it does not list proper PTO coefficient. Thank you for the help! This gives me something to take back to dealer, as I did not get taken seriously when...

Ops manual says engine speed rpm 2,476 should be PTO speed rpm of 540, however dash only shows PTO speed of ~495 at ~2,500 engine rpm with 72" land pride rotary cutter attached. Is this normal? I would need to get close to 2,900 rpm to reach 540 pto speed and rated revol. for L4760 is 2,600...

Took loader off and still does it. Had dealer test drive. They think everything is fine--just normal noises. I am going to put more hours on it and keep looking around for cause. Tractor works fine, just the random noise and scratching. Figure it will get worse if an issue, or hopefully...

Will do. Thank you for suggestions

Proud new owner of L4760HSTC. I have 42 lite hours on her. This past weekend, an intermittent grinding/scratching sound began while going back and forth packing down minor dirt work. I feel it through the pedal and it sounds like its coming directly beneath feet. At first I thought it was...