Anyone seen this happen before? Was just running down the bayou when all hell broke loose. One piece went flying through the plastic cover up about 30' in the air. As soon as it happened I shut the engine off. Any ideas on what caused this or is it that the plastic fan gets so hot that over time it developed a hairline crack and finally went? Does it look like I need anything else beside the fan? I did away with the studs and rotating screen and just used the outer screen.
Also anyone in the SETX area know what they are looking at and wouldn't mind checking it out let me know. Thanks

Happened to me, reason it did that is because you left the ring and studs out and if caused the fan to flex and break. I learned the hard way too.

Check your coils make sure nothing is busted up underneath the cover. Replace fan.

Do not run it like that also.... It acts as a balance when spinning.. out of balance is a bad thing with the motors!!

I dont know why, but for some reason those broken bolts always come out with little to no probems. I start by removing the flywheel, then drill the broken part out, and when I feel the drill bit start to bite I push a little harder and 99% of the time they spin out the other side of the hole........Just dont push so hard that you break a drill bit.


And X2 on what Duck Hearse said, check your coils very closely as well as the spark plug wires. Seen a few broken fans damage the coils before when they start whipping around.

Left hand drill but will get the broken studs out.

Replace fan, ring and use regular bolts with blue loctite, flat washer and lock wager

Appreciate the info guys

I don't know if it will make you feel any better. But Briggs just stopped installing those grass shields on the marine edition motors.

better round up your parts tomorrow - closing in on a holiday weekend

This is why this should be the first thing on anyone's list to do to there motor. Take the grass catcher out and cut the studs down and put them back in. Seen it a dozen times or more. Cheap insurance.

http://204.197.244.166/~mudmotor/mmt_v2 ... =3&t=43639

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viewtopic.php?f=3&t=47371

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wow - thanks for sharing Will, that was very insightful.

I replaced that studs with bolts, i think m6. I kept the ring, used washers and lock washers along with blue locktite.

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When (not if) those studs break off, it can potentially cost $300 or more to fix everything they can tear up. The blower housing, flywheel cage, fan, coils, etc...

Thanks Will

I know I need to reuse ring, I assume this triangle bracket is not needed one grass screen removed?

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Correct

Thanks bud

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So this is what it should look like correct


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Hopefully Boat dr will chime in but he told me those bolts will basically crush that ring so he takes the tower bolts and cuts them down where a socket will fit on the bolt. At least that's how I did mine from his suggestion.

That will work. Mine are cut down like Roy said

I just got new ss hardware with my ss bolts as lock washers and ss fender washers. Tightened until I saw washers begin to distort. Used blue loctite

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Those tower bolts have a shoulder for a reason regular bolts aren't gonna fill up the hole space in the fan shroud and support ring= gonna spell disaster at later date


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So what route should I go, reuse tower bolts , thought marshjb sod he just new hardware. Thanks for the help, not going on deaf ears

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10 4 so you think I half inch sticking out is fine. Thanks aka for getting back with me bro,


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Yes that will work!!

Yes, cut that line and make them all the same

10 4 cutting now.

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Best pic I have of mine.

If you have a little scale, you can weigh them after you cut them and make sure they are the same.

Nice call on that Owen, got two at 19.3 grams other at 19.4.


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It's been around for years, back when I could have fun lol. My career doesn't allow it now lmao

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Can't believe you actually weighed them