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Cleaning Bottom End


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Yes. Take the motor out. Pull the cylinders off, although they are prolly off already. Dump some kerosene down there, and swish it around. Dump it out. Do this 2-300 times. Use compressed air. Then, put it back together. Run it, and smoke the crank. Then split the cases, and get a new crank. Put it back together. All good to go...

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Your wayyyyyyyy better off to split the case and spend the $25 on gaskets and yamabond than to risk crank failure.

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Yes.  Take the motor out.  Pull the cylinders off, although they are prolly off already.  Dump some kerosene down there, and swish it around.  Dump it out.  Do this 2-300 times.  Use compressed air.  Then, put it back together.  Run it, and smoke the crank.  Then split the cases, and get a new crank.  Put it back together.  All good to go...

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Your wayyyyyyyy better off to split the case and spend the $25 on gaskets and yamabond than to risk crank failure.

Been there done that!!! When the crank does fail, it will take your new pistons bore and head with it.

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Do you wanna take the chance? There is a way to tell, rip it down, and take care of it the proper way.... However, before the sand gets to the top of the piston, and into the cylinder, it first has to be drawn into the bottom of the case, so it can go through the transfers. So, yes, sand did get into the lower end. However, it may not have been into the bearings. However, it is not a chance that I myself would be wiling to take...

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