I'm still having this issue with my buddy's Rincon. I pulled the oil tubes yesterday to see if either was bent or blocked, but they looked ok. I found a thread where the poster fixed his and said
"Yes that is the high flow/ low flow tubes inside that cover #17 and #18. Just back out the hex bolt, use a small flat head or a magnet to get them out. You will able to tell how they go in there. The go into your secondary clutch. When I put the cover back on my Rincon I pinched the end of the log tube which cause the exact same problem you are describing. If that is not your issue then you can make sure your transmission worm holes are clean also, which is the box right above the hex bolt."
and looking at the transmission description in the FSM it appears as if the valve body diverts oil pressure to the 2nd and 3rd clutches in the center of the motor. If oil pressure doesn't get there, either from a blockage, valve body malfunction, or maybe oil pressure leaking out between the valve body and the clutches, I don't guess you have 2nd or 3rd gears.
Still trying to figure it out. Not a big fan of wrenching on the Rincon. I can do a 350/420/500 motor in under a day. I've been working on this Rincon forever.
Last edited by jeepwm69; 05-25-2017 at 11:04 AM.