You might be able to replace the head gasket on the rear cylinder, but the front cylinder will be very difficult as the head is nestled under the steering head. It will be tight!
I've never done it with the engine in the frame myself.
And for SP2's (since it's what I have), you don't have to remove the front ignition coil to remove the engine.
There's enough space for the head to clear the coil and wiring harness on the left side.
Better if you use two people since that engine weights 160 lbs.
Pulling the engine is far easier than installing it.
For installation, I found that tilting the engine forward on the lift, I can slide the tail of the engine back and up so I can then slide the lower rear mounting bolt and spacer into place.
Then it's just a matter using the lift to swing the engine up into position for the rest of the mounting bolts and spacers.
Then attach the swingarm and begin torquing the bolts and nuts in the specified sequence.
SP1 have the adjust bolts and locknuts for the engine, so it's a bit more involved, but not excessively different.
Last edited by SubSailor; 08-28-2013 at 08:04 PM.