Connection Rod Bearings

[Superfly]

Hey Guys,

I figured I would finally break into that engine I had that froze up on me. What happend is the front connection rod bearing wore out, slipped, and they stacked on top of each other freezing the piston.  I was looking through the haynes manual and it noted a color code chart referencing the size of the bearing.  In the process of wearing out, in wore out a good part of the bearing, and I do not know what color was on it.  There were 2 numbers stamped on the crankshaft stamped "3" and 1" the  bearing that wore out was next to the "1".  How do I figure out what size, or should I just take the crankshaft & bearing to the dealer.

[Josh M]

I would take it to the dealer and have them measure the crank and the rod, then order the correct bearing according to the measurement.

[Superfly]

Just got off the phone with Yamaha, It sounds like I am going to have to take the crankshaft into the dealer.

I was checking out the rest of the engine while I have it completely disassembled, and I must say that it is in great shape.  Pistons were good, rings were good, even the main bearings looked good and moved freely. I still might replace them while I have the engine split open.

Cracking open the engine was not that bad (my guess is putting it back together will be a bear, they always are! ;D) just had to fight & cuss with the clutch basket screw.  wish me luck on getting my old engine back!!

[Josh M]

LUCK ;)