How do I replace the connecting rod bearing on a Honda CT90?

To replace the connecting rod bearing on a Honda CT90, first, ensure the engine is completely disassembled and the crankcase is open. Remove the connecting rod by unbolting it from the crankshaft and gently sliding it off. Replace the old bearing with a new one, ensuring it is properly seated, and then reassemble the connecting rod onto the crankshaft, tightening the bolts to the manufacturer's specifications. Finally, reassemble the engine components and ensure everything is correctly aligned before testing the engine.