Today was my first day working on the new Blaster. It had a clutch disingae problem. So the first thing I did was drian the crank and water came out. Yeah water, about a cup full. Very strange I thought and was very glad I didnt try to start it. I proceded to take off the clutch cover to expect everything to be rusty. But everything was clean. I began looking at the clutch and noticed that the small nut on the push rod was loose. I started playing with the adjustment rod with a screw driver and notced that now when I apply the clutch lever it pushes out and disnegaes the clutch. So all I will have to do is look at the Yamaha manual to learn how to properly adjust the push rod. I do have a question about the clutch. Is the two friction plates closest to the center of the engine suppose to be right on top of each other. Thought there should be a gap from the steel plate in between? See second pic.
That being easily fixed I thought it would be a good idea to strip down the engine further to check for any other damages or corrosion from the water. I didn't find any rust or anything yet but when I took off the top end I found two large scores in the cylinder wall. Just deep enough for you to feel it if you took your finger nail across it. I posted pictures below of the piston and the cylinder wall. Should I hone the cylinder? Bore it out? New piston and rings? I dont really want to fork out more money for a new piston if I dont have to but if it needs to be done then nows the time. If I do have to get a new piston is there such things as a high compression piston like there is for the raptor? Whats a good piston? Also while I have the top end off is it possible for someone like me to do some port work? I have a lathe and a mill not CNC though. Is there a thread on here about a do it yourself guide to port work? Any thoughts or input is greatly appreciated!
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That being easily fixed I thought it would be a good idea to strip down the engine further to check for any other damages or corrosion from the water. I didn't find any rust or anything yet but when I took off the top end I found two large scores in the cylinder wall. Just deep enough for you to feel it if you took your finger nail across it. I posted pictures below of the piston and the cylinder wall. Should I hone the cylinder? Bore it out? New piston and rings? I dont really want to fork out more money for a new piston if I dont have to but if it needs to be done then nows the time. If I do have to get a new piston is there such things as a high compression piston like there is for the raptor? Whats a good piston? Also while I have the top end off is it possible for someone like me to do some port work? I have a lathe and a mill not CNC though. Is there a thread on here about a do it yourself guide to port work? Any thoughts or input is greatly appreciated!
