The maintenance was at 500 kms  for chain case oil, spark plug replacement, belt replacement, etc, nothing noted on the Dynamic.    Etech plugs are good for 3 yrs or 10,000Kms, chain case oil basically once per season.   Was told on the Polaris I should consider changing the belt at 2,500kms.    

SOLD

At about 2:30 PM, we were through the 131 intersection that you mentioned, but we weren't the group you saw. We were a group of only 3, 2 black MXZ 900 n/a Skidoos and a blue Apex. Without being crowded, the trails were well populated on Friday with solo riders to large groups and all sizes in between. We even saw two sleds being towed, which was a bit of a curiosity to our noobie on the Apex. He asked if that is a common occurrence? LOL. My main riding buddy and I have ridden those trails since late in the last Millennium, and Wed - Friday were the best trail conditions, with good weather, that we have ever experienced from Deep River to just east of North Bay. What a joy it was to be out! Sounds like you had a good time too.

I think your Apex was Black and Red, about sled three in your group. I believe your group passed my buddy and I at the 131 Y junction, with your group heading North on 131 towards A trail. We were parked on the North side of 131, having come down south.  Ref the un-maintained section, I would dread meeting an on-coming sled on either the East or West side as there is no place to pull over, from what I saw. We did the goat bridge, although it looks like some sleds went across the creek. Agree, the trails in this area are presently awesome. 

What was maintaince requirements I am curious? My manual  has hardly any maintaince but I don't have dynamic system either?  I find four strokes are expensive to service at a dealer too. About 350 more then a similar two stroke when I last went. If I were you I keep four stroke if you can't get what you want. I kept mine and it is useful to keep some mileage off two stroke. Two stroke if you put more then 3,000 on in a season no one will want it after 3 seasons