u can get the splitting case tool at the yamaha dealer

 

It is probably as easy to split the case as it is to seperate the cases and squirt a sealant in. I used a harmonic balancer puller for a car to split the cases. It just a piece of metal with slots for bolts to attach to the crankcase. with a bolt in the center to push crank.

 

u dont need that take a shall hammer make sure all the case bolts are out thap that case softly with a hammer until u see the seam take two screw drivers and work the case apart its not hard to do and not like a honda where shims fall out all over the place all the gears etc have snap ring holding them on the shaft

 

also if u worried about doing it u can all ways box it up and ship it to me
ill do it for two hundred dollars

 

rubber mallet and a piece of wood is all you need.

 

My blaster is having the same problem right on the bottom right side of the motor. I am fifteen and have No money to pay someone to repair it and I was wondering if I can just get a new gasket only on the right side without taking the entire motor apart?? Also is there a way to break it open without a special tool?