Need help with 2000 Elite 50cc

[Motley Crue]

Yea I was looking at that exact diagram on another web site. dun rite, that nut is so stuck on that shaft that I was actually lifting the scooter off the ground when I was trying to loosen it! I'm a pretty strong person, so I was very surprised to not be able to budge that nut. I fu*ked up something in there, whether it is the left or right crank shafts or both, I don't know. All I know is I was attempting to loosen the flywheel nut counter clockwise, and instead of the nut budging, the crankshaft did, and it created a big problem. The scooter starts up fine but there is a loud grinding noise within s second or two. I need to get in there now and see what stripped in there. Do you think there is piston damage? I doubt it because it sounded fine when it started up. It sounds like the crankshaft tries to spin and grinds against something.

I am thinking I need an impact wrench though, to get this nut off. I am going to check out harbor freight tools tomorrow. Man this sucks.

[Motley Crue]

My guess is I am going to need one of these..... http://cgi.ebay.com/ebaymotors/Honda-Ky ... 2a0e78925a

[dun rite]

the piston is probably fine. if you need a crankshaft, post in the for sale/ wanted area. Hard to beat the Honda quality, even if used.

All I know is I was attempting to loosen the flywheel nut

Thought you were working on the drive face side??

How far did the shaft spin? Not positive but don't think it could spin to far without hitting the case due to getting out of alignment with the other side. pretty tight tolerances in there. Maybe someone with more experience will chime in..

[dun rite]

thinking more of your problem. You say it still starts, does it vibrate a lot when running? If you moved one side of the crankshaft and not the other it would be out of balance and vibrate abnormally. Not sure what the grinding noise is, you'll have to investigate, you could have bent the drive face and now it hits the cover. you might have actually loosened the nut which would cause the drive face to wobble and hit the case.

[Motley Crue]

No vibrating and no clunking noise. It sounds like a dentist's drill about one second ater the engine starts running. I have to immediately shut it off and there is a foul smelling smoke coming from that shaft area. It just seemed like when i tried to get the flywheel nut to budge it wouldnt and something else connected to that shaft gave way instead. Whatever that is is the problem. Even afterward when tapping a wrench on that nut it still wont budge!!! It has been on there 10 years and nobody ever touched it.

[Motley Crue]

Din rite i have been researching the * out of this and i think i damaged the alternator rotor.

[swimmingfree]

here the Honda dealer info

7140 Henry Clay Boulevard
Liverpool, NY 13088-5393
(315) 451-6750

[swimmingfree]

boy i did not see this comming ???
i wonder what wood happer if you handed a monkey a gun ????

[sprite2011]

I think someone should just let a shop do all this work.

[Motley Crue]

Actually dun rite, it could be anything in there, and maybe not the alternator on the other side. A post related to this on the internet had me thinking it was possibly the alternator rotor being stripped. My guess is the timing is thrown off or some gear or gears that the shaft meshes with were stripped. It's too bad the nut holding the driven gear was so stuck on the shaft. I don't even think an impact wrench will make this thing budge. This would have happened to anybody trying to loosen this nut. It is THAT stuck on the shaft.

I think I am going to get out of work early and see if I can rent an impact wrench and compressor from a local tool shop or taylor tool rental. The torque on it will need to be pretty high to make this nut budge. I need to find out what too much torque is however so I don't damage the crankshaft if it is not already damaged. Any other suggestions dun rite or mystic?

[Mystic]

I dont use air tools, too much power. I recommend getting some ronsonol multi lube or some other nut loosing spray. clamp the vise grips on the toothy drive face and wedge against crankcase then get a long handled socket wrench for more leverage and hit it with a hammer till the nut loosens. i dont see how you could have messed up anything on the inside by the shaft spinning....thats what it does lol if the shaft spun instead of the nut the entire thing would have just spun not half of it. did you have anything holding the flywheel on the other side?? that is the only way you could have damaged anything and only then you may have sheared the woodruff key i guess try the air tool and see what happens. dont know what to tell you about the noise....did you put eh kickstart cover back on before you tried to crank it? the noise may be something binding in there instead of inside the cylinder or crancase proper.

[Motley Crue]

I dont use air tools, too much power. I recommend getting some ronsonol multi lube or some other nut loosing spray. clamp the vise grips on the toothy drive face and wedge against crankcase then get a long handled socket wrench for more leverage and hit it with a hammer till the nut loosens. i dont see how you could have messed up anything on the inside by the shaft spinning....thats what it does lol if the shaft spun instead of the nut the entire thing would have just spun not half of it. did you have anything holding the flywheel on the other side?? that is the only way you could have damaged anything and only then you may have sheared the woodruff key i guess try the air tool and see what happens. dont know what to tell you about the noise....did you put eh kickstart cover back on before you tried to crank it? the noise may be something binding in there instead of inside the cylinder or crancase proper.

I feel relieved after reading your post. Yes I just realized that the high pitched drill noise is probably the starter driven gear not being held in place by the crankcase cover. So to answer your question, no I did not put the crankcase cover back on when I started it, and because of that I should have removed the starter driven gear when I started it. No damage was done to the crankshaft in all likelihood, and was probably the driven gear teeth hitting the starter driven gear when it should not have. This is not for sure, but most likely is what is going on since the motor sounds perfect when it starts and runs, and the noise is coming right from that variator and driven gear area.

I will find out after work today. I am going to stop at harbor freight to pick up an electric impact wrench. It is the only way to take off that nut. It is so ridiculously stuck that not even Lou Ferrigno could take it off! I'm learning

[dun rite]

How did you start it without putting the cover on? always thought the starter drive would just fly out or bind with the drive face.

[Motley Crue]

How did you start it without putting the cover on? always thought the starter drive would just fly out or bind with the drive face.

Electric start, but simply needed to take out the starter drive. My belief is that the starter drive was being unnecessarily hit by the teeth of the driven gear, which explains that high pitch noise. Right now all I need to do is figure out how to get that d*** nut off the shaft so I can take restrictor off variator. Like I said in previous post, I will be going to Harbor Freight after work today to get an electric impact wrench.

[Motley Crue]

Which of these air filters is best?

http://www.partsforscooters.com/Vehicle ... ir-Cleaner