<font color="blue"> I thought he meant castering, which would also mean the wheel could spin free. </font>
I know there was a reason I asked it but can remember why...but now that I re-read it castering would enable spin....Duh....oh welll
<font color="blue"> Level Front-to-back or side-to-side or both? I think it would only matter side-to-side, and then adjust the top link for proper slack when the RFM is lowered.
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I always level my 3ph arms before putting on an implement as I don't use a wrench on the jamb nut so it tends to work itself free and starting with a level implement makes thing a whole lot easier.
I specifically level it front to back. The top link attchment is a free swinging channel just as the lower arm pins are on pivoting plates so esentially the deck rides on it's wheels and the up and down movement allowing the deck to follow the terrain comes from the moving pivots on the rfm not movement of the 3ph. If I think about the theory: if the deck isn't leveled front to back to align the attach points then putting the 3ph down still won't allow the pivots to work in unison causing a wheel not to bear it's weight. The 3ph arms don't move when the deck goes up and down the 3ph has to be adjusted to allow proper pivoting of the deck.
Hope I'm not babling here...been a long day. The bottom line is if I start with level arms and then a level deck while raised I get repeatable results everytime.
Regards,
Kevin