Hello, just had motor in shop, got it back with grinding noise(not there before) after having carb rebuilt and another drive shaft and foot put on. The mechanic says he thinks the bearings are bad. never made this noise before.<br /><br />anyway, have checked to see if cap loose, seal broken but everything seems dry- no oil or gunk anywhere under flywheel. anyway I want to remove flywheel and check to see everything is tight. what size gear puller do I need for flywheel and is it possible to remove flywheel and keep the timing as it is?<br /><br />History/// 1973 200merc 20hp. Motor previously sat up for eight years, foot blew apart and broke houseing. After long search found a complete lower unit for $122.00. Paid $201.00 for carb rebuilt and foot attached to old lower unit, also new seal put in foot/prop. No history of noise before having this work done. mechanic is new to area, self employed- claims bearing most probable cause of noise and loss of power on top end. mechanic left motor to sit for a week but did no more work on it nor searched out noise.<br /><br />We put the boat back in the water and took off with throttle wide open. With weight of myself and son, the boat accelerated fine and planed fully on top of water. we then added mother's weight to boat and boat would not plane though it previously planed fined with all of us in the boat. I use to use a six gallon tank with this motor, now am using temporarily a three gallon tank, can this make a difference in lost speed.<br /><br />As this noise is new is it possible that there might have been damage to upper gear case? It's hard for me to beleive the bearing just all of a sudden starts with a grinding noise that comes and goes. thanks for your help.<br /><br />so, I need instructions to remove flywheel and tool I will need and any thoughts you may have.thanks again