The 06 had one of the most reliable motors doo made in the last 10 years. I wouldn't be that concerned with 3000 kms. My brother in law has the red 06 adrenaline, just like the one in the ad, and has almost 5000 kms on it. We regreased the pto crank bearing last year, and double checked the compression this year. It is still 150 on each side.
My buddys 06 Adrenaline, just like the one in the ad, toasted the PTO crank bearing at 1600 kms........Some will last, some won't. Any greased crank bearing Doo motor over 2500 kms needs crank run out checked on a routine basis IMO. Even the BRP mechanics are saying this.
Rowdy - Does that sled have the Challenger Lite on it? If so tell your buddy to start looking for a new track.