first you have to have the clutch cover in hand..if you look on the back you will see a plastic gear(pic #2)..remove the c-clip AND PIN(dont lose that pin).go on the front side and remove the gold looking plate that has 5 screws(pic 1).there you will see the inpeller.slid it out and you will see your seal
http://img141.imageshack.us/my.php?image=c...cover002fp0.jpg
http://img10.imageshack.us/my.php?image=cl...cover001pj8.jpg
if you have the clutch cover off,you will see the water pump gear(plastic,it stayes on the cover).when you remove the plastic gear you will see the seal.or if you remove the inpeller you will see it there too.
your clutch maybe fine.the antifreeze mixed with the tranny oil will cause it to slip.your going to have to remove the clutch cover to replace the o-ring so just check your clutch while your there.i would get a EBC or a Dirt digger for a trail bike.
i've ran a short rod 4,5 and a 7 mill crank in the past for over 2 years and never had any problems.the long rod is always more reliable,but you cant compare the rev out of a short rod...if your port jod is on Q,you'll be very happy with it.
the small gear should just come right out.the only thing holding it there is the nut.the bigger gear has a key way,so it only comes out one way.sometimes the key way jam and it becomes a pain in the ass.
10mill what??I have a freind that has a 10mill dm that was braking trannys left and right.went and bought a billet tranny and havent had that problem any more.