PTO Speed Selector

fenneran · Sep 24, 2003

I have a YMG1800D, which has a couple of settings for the PTO speed. From the bottom the order (I think) is: Slow, Neutral, Faster, Fastest. I have always run the brush-hog and PHD at the "Faster" speed, but the other day I made the mistake of putting it in "fastest" setting and it sounded like an airplane taking off. Then it got me to thinking: I wonder if I have been running it at the wrong speed. Do you all have any idea? Thanks.
Frank

Tractors4u · Sep 24, 2003

If you have been running at the "faster" speed which is probably around 900-1000 RPM's, then yes you have. On the Yanmars usually the slowest speed is 540 RPM's which is the recommended speed for bush hogs, aka rotary cutters.

fivestring · Sep 24, 2003

<font color="red">"540 RPM's which is the recommended speed for bush hogs, aka rotary cutters." </font>

And most other power implements as well.

fenneran · Sep 24, 2003

So is that more than likely the "slowest" setting (all the way at the bottom of the selector)?
-Frank

EFC · Sep 24, 2003

Yes, and run at 2200 to 2400 rpm.

pruntyc · Sep 24, 2003

You should have red mark on the tach, which is the speed to run the tractor, and low PTO. If you do this you will be running it correctly for about an american implement.

fenneran · Sep 25, 2003

Great. Thanks for the information. As an academic question, what is the harm in running it on the faster setting? I imagine it would have to do with design constraints. In other words, it was desinged for 540, so running it at 1,200 (or whatever) may result in it flying apart unexpectedly.

-Frank