Hello guys. I researched for two days here in the forum the information I need , but I found just a few. I need to change the four largest motor bearings ( clutch and crankshaft ), but need tips on how to assemble them , I'll leave some questions here on the topic. 1. What are the models of bearings to replace the current ? I know a lot of people recommend the NGK and SFK brands. 2. How to fit the bearing ? I saw a video (no audio and short ) where the person uses grease to allow the bearing fitting easier. It can be a grease universal type ? 3. I saw that the bearings will also embedded with two rubber bearing seal (magneto), how to install ? Can I use the current in the new bearings ? 4. I need internally lubricate these bearings before installing them ? If yes, how? With this information I will open the engine and begin to replace the parts, appearing more questions I will ask around here. Sorry if I said something wrong , I'm from Brazil and I'm putting my English on test here. Thank you!