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Discussion Starter · #1 ·
Ok, I have the motor out of the frame on the 2000 rancher 350es 4x4. I am in the process of rebuilding the motor and I was going to pull the front and rear covers to give the motor a good cleaning. My question is do I have to pull the starter and the pull rope housing first or can I just take the 12 bolts out of the rear cover to remove it with the starter and rope housing in place?

I did notice a little scarring of the connecting rod were the piston pin goes through it. When I pulled the oil plug it did have some fine grey streaks in the oil so that made my mine to go ahead and at least pull the covers to give the motor a good flushing. Any poniters would be great since this is my first time in a lower end of a ATV. Just by a visual inspection I do not see any dirt in the case through the jug hole.
 

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I don't think you have to remove the pull rope assembly but not 100% sure.
 

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I don't think you have to remove the pull rope assembly but not 100% sure.
It would be a good idea to pull the rope starter off just to clean the dirt and mud out of it.
 

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Yeah, you have to remove the pull rope assembly, first. There's only 3 bolts that hold it on. You have to remove the piece under the pull rope assembly, that the pull rope engages to turn the engine over. It's bolted to the end of the crank. You have to remove that piece before you can remove the side cover.
 

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Discussion Starter · #5 ·
I have pulled the front cover off and there was a small amount of metal in the bottom of the case along with some thick black sludge. It didnt seem abnormally dirty though. I have not pulled the back cover yet but will this week.

I also noticed play in the rod/crank bearing both side to side and up and down. Is this normal or not? There is a lot more to these motors than I thought lol.....:icon_eek:
 

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I also noticed play in the rod/crank bearing both side to side and up and down. Is this normal or not?
A little side to side movement is normal. Up and down movement means your rod bearing is bad.
 
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