1971 18hp, flywheel wobble...

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ill13

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Apr 18, 2009
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..as the title says, the flywheel is "wobbling", enough that it is hitting the recoil starter supports/legs. Is this just the upper roller bearing? Is it a drop in part or will i need to split the crankcase?

thanks
 
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Daviet

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Re: 1971 18hp, flywheel wobble...

Is the flywheel torqued down properly? Did it just happen or has it been running that way for awhile?
 
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ill13

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Re: 1971 18hp, flywheel wobble...

Well, the flywheel nut came off easily enough, so no idea on that [going to orange/blue box tomorrow to get bolts for flywheel puller].

It just happened as far as I know, I've had the engine for ~2 seasons, I water tested it early this season, didn't notice it then...But the engine lost a lot of power on the return trip and ran really poorly [I assumed either one plug/coil or carb problems] so I put it away, then on Sat I pulled the carb, cleaned it, re-installed it and started the engine..at that point I noticed the loose flywheel...

I'd rather hope it's a mis-torqued flywheel!
 
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Monte1961

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May 8, 2011
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1,180
Re: 1971 18hp, flywheel wobble...

Take a good hard look at the crankshaft before you reassemble it. Also inspect taper inside flywheel along with key. If there is any question on any part, renew or replace.
 
1946Zephyr

1946Zephyr

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Oct 21, 2008
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Re: 1971 18hp, flywheel wobble...

It sounds like the flywheel isn't sitting down on the crankshaft properly. Do you have the correct key in place?
 
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ill13

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Apr 18, 2009
Messages
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Re: 1971 18hp, flywheel wobble...

pulled flywheel...crank is wobbly...I'm going to have to split case and, at the least, replace roller bearing. Really don't want to do this [who does!?!], I could sell it as is...

...Naw, unlike a car/inboard, pulling and splitting a 2 stroke outboard, plus reassembly should only be a 4-8 hour job.

I need a head mounted camera first! I try to document all of my work, but I hate stopping to take photos.
 
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