What did I do?

[DeHart16 37]

The belt for my starter generator on my 753 went flying off, I replaced it, and soon as I did I had smoke from what looked like under the carb? Drove it for 5 minutes n heard a loud pop, or bang.

now I can’t get it running? Sounds like fly wheel isn’t catching?

[pfrederi 18,201]

Have you  taken the belt cover of sounds like you may have smoked your  new belt which then broke making the noise...

[ri702bill 8,769]

My money is that the belt is the victim, not the cause. Check the S/G for ease of rotation with the belt off. It should spin freely without drag... yours probably won't.

[DeHart16 37]

Well new belt did not break…..I am trying to post video but apparently the file is too big….

[pfrederi 18,201]

Is the belt slipping on the S/G or the Flywheel

[Achto 28,229]

1 hour ago, DeHart16 said:

I am trying to post video but apparently the file is too big

 

Best to post it on YouTube & then post the link here.

[DeHart16 37]

Thanks guys, here is a link to the video. There was smoke coming from. Possibly above the points area on engine prior to hearing the pop/crack….

 

 

[pfrederi 18,201]

Can't see any smoke...  Take the belt off the S/G push the starter button let the S/G start spinning and listen for noise..bad bearing or internal issue??

[rmaynard 15,814]

It's spinning a little too fast for the S/G to be turning over an engine with compression. Take off the belt and see how freely the engine turns. I hate to say it but it sounds like something broken inside the crankcase.

[DeHart16 37]

So knowing little to nothing about engines, I assume that would mean I need a knew one?

[rmaynard 15,814]

Nope, just needs to be rebuilt. 

[DeHart16 37]

Ah jeez. Anyone on here doing that kinda work? I assume it would be expensive. Or maybe a tutorial on doing it myself?

[953 nut 56,814]

17 hours ago, DeHart16 said:

Ah jeez. Anyone on here doing that kinda work? I assume it would be expensive. Or maybe a tutorial on doing it myself?

Member @richmondred01 is an engine rebuilder or you can use the thread below to do it your self.

 

[squonk 41,964]

Probably broke the connecting rod. When it let go, it locked up for a second and that's why the belt flew off. 

[richmondred01 2,285]

Your rod is broken. 

[richmondred01 2,285]

If it chipped the apron skirt you will need to sleeve the cylinder. 

Edited Thursday at 02:56 PM by richmondred01

[RED-Z06 2,415]

Where was the oil level at failure?

[Wheelhorse#1 1,748]

9 hours ago, richmondred01 said:

If it chipped the apron skirt you will need to sleeve the cylinder. 

@richmondred01Would it run without being sleeved if the skirt was broken ?  

[RED-Z06 2,415]

16 minutes ago, Wheelhorse#1 said:

@richmondred01Would it run without being sleeved if the skirt was broken ?  

If the  cylinder is broken high enough that the thrust face of the piston pushes into it, or if the ring catch it, it might run...briefly, the cylinder skirt helps to stabilize the piston at the bottom of the stroke.

[richmondred01 2,285]

1 hour ago, Wheelhorse#1 said:

@richmondred01Would it run without being sleeved if the skirt was broken ?  

It may run for awhile, maybe not, but why do a have smacked job? Do it once and do it right.