>it's a serious job. You'd hope your dealer has a good mechanic.
Hardly. If a putzzz like me can change wrist pins most anyone can. The
only tough part is draining the anti-freeze all over your shoes,
garage floor, belly pan, the brake disc etc... After you get that all
cleaned up it's a breeze. Pop the cooling jacket
then pop the heads for a total of about dozen to twenty bolts. Take
the jugs off (another dozen or so bolts) and then you easily remove
the wrist pin clips (Don't forget to drop pin down in the crank! :-) ) and
then the pin and bearing slide out. You may or may not need a
puller. Install the new bearings and reassmeble.
To be honest this is too easy as compared to swapping out a track.
Two-strokes are amazingly simple.
PS: In regards to dropping the wrist pin clips down into the crank ->
I'm kidding. Do this and you are guaranteed to have a full day's work
ahead of you unless your brother sells Snap-On tools and can get you
this trick little bendable magnet to pick up the clips. It saved me!