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This may seem like a dumb question but do you lube roller bearigs with oil or assbly grease. ??? Putting my atv back together and was curious before i install my water pump shaft bearing amd crank 3rd case roller bearing.. 1995 scrambler 4x4 two-stroke
 

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If they don't have seals on them they are lubed by the engine oil on a 4 stroke, and the fuel/oil mixture in a 2 stroke. You can shoot a little 2 stroke oil on them to get it started if you like but it's not necessary. If they have seals they are already packed with grease and require no maintenance.
 
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