I have a oil leak on my sons predator 90. Seems to be comeing around what looks like the oil pump...where the throttle connects to also. Think it may be a gasket or something leaking, but I tried tightning the top screw above where the throttle connects to and accidently cracked it. Now I need the whole thing out to fix or replace it. How do I get this oil pump out?? Do I have to get the flywheel off to get behind it? If so how do I get it off?? My small leak turned into a big problem! Please help!