Merc 420 to 525sc in a Formula 242.
#115
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Joined: Oct 2012
Posts: 896
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From: Buffalo NY
Well, Saturday was awesome. Got 2 hours run time on it. What a beast. Today, pulled out of the ramp. I got it on plane and heard a screech. Blower seized up. I took the belt off and idled back. Got the blower off. Just the little sealed bearing in the snout blew. No pieces went into the oil bath bearings at all. I am very lucky.
#117
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Joined: Oct 2012
Posts: 896
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From: Buffalo NY
I am going change the bearing and leave the rest as is. The front bearing is non servicable. The other bearings are all oil bath so they get oil changes while the front one gets the grease it came with.





