Turf Tiger II model model-sttii-61v-37bv-efi blows 20a fuse after mowing for 15-30 minutes

[Auto Doc's]

Is this what you mean?

 

[Its Me]

airdriver, I have several Turf Tigers up to the 72" they are hard to break but what you have I would say if a clutch problem, I have a repair shop and just finished one on Scag Tiger Cat 61' cut he is a neighbor of mine, this is what he does so if you do that stop it and save money, he cuts all the way down to the ground "so he don't have to cut a often" ? then runs the machine forward as fast as it will go " to bun less gas" we live in SW Louisiana where the grass grows very fast and then he only cuts once a month told you all of that so if you do any of that stop it, I think what you have is a shorted clutch and are a bearing that is seizing up in the clutch, there are two a top and bottom when cutting low grass at a high speed heat builds up and affects the bearing, I have some that have almost 1,000 hours on the same clutch, I have rebuilt some but the is a job, got to have snap ring plyers and a press with bushings, Joe​

 

[Auto Doc's]

Another issue that I have seen, is a fuse holder with weak retainer pins that creates excess heat. I have replaced the fuse holder on several machines in the past which resolved the issue.

 

[Forest#2]

Read post #10 again.

Install a 7-10 amp fuse in the pto lead and test.
Also look at the existing fuse holder carefully. I've seen fuse holders that do not make good connection at the ends of the fuse and they EVENTUALLY get hot and melt the fuse due to a bad connection INSTEAD of a current overload. The fix is to install a new fuse holder.
Your ohmmeter seems to be not reading correctly.

If your fuse holder is the automotive type you can get fuse breakers for such. You can also get fuse holders for them as a kit.

You need to do more logical electrical testing BEFORE throwing big bucks at a PTO clutch.

I would consider reading the pto amps using a 10 amp meter.