Clinician
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Post by nino on Jun 5, 2014 16:02:10 GMT -6
Reason for the back wheel to lock up was broken bearing in the drive shaft due to no gear oil in the Crankcase. Replace all Bearing & Seal with this Kit www.partsforscooters.com/164-299-GY6-Transmission-Bearing-and-Seal-Kit?sc=38&category=138712. Not an easy job! before attempting this make sure you have a Bearing puller ( I rent one from my local AutoZone )and an impact drill for the removal of the clutch and variator ( you will NOT BE ABLE TO TAKE THOSE TWO BOLTS OFF WITHOUT THE IMPACT DRILL, it is also good idea to replace you're belt while you have the cover off. ). Put everything back together only to discover that my gear oil plug is stripped and that's what cause the wheel to lock up.I raccoment everybody with a gy6 engine to check you're gear oil every time you change you're engine oil, gear oil plug is very easy to damage and if the oil leeks out you will damage the bearings causing the back wheel to lock up while you riding. Need to replace the transmission cover to solve the stripped oil plug issue, in the meantime I managed to stop the leak with a plastic anchor and the right bolt, it is a temporary fix but it works, I've been righting the scooter for couple of weeks with no oil leak. Still have the Dim lighting issue.....accelerating almost full lights....idle no lights. |
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Clinician
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Post by nino on May 3, 2014 20:50:24 GMT -6
Hi, today on my way home at 40 mph my back wheel lock up,that was quite scary. What causes a scooter back wheel to lock up? ( 150cc gy6 4 stroke )
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Clinician
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Post by nino on Apr 13, 2014 15:05:03 GMT -6
Hi,waiting on a multimeter from Amazon.In the meantime I was wondering if there is a way to connect the headlight and taillight directly to the battery, I have feelings the problem is with the 8 coil magneto that was replaced because that's when the all problem started, the scooter was fine prior to that.I'm hopping I don't after take the flywheel back off again, I had lots of problems with the woodruff key and timing.
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Clinician
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Post by nino on Apr 9, 2014 9:45:37 GMT -6
they come on automatically after the motor starts.
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Clinician
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Post by nino on Apr 8, 2014 21:18:00 GMT -6
Thanks everyone, I got the scooter to work,it was very hard and complicate job,finally got it to run today: I had to adjust the valves, ( they were completely closed ) made my own .004 inchs feeler gauge out of a coke can ( worked perfectly ). The Woodruff Key on the Flywheel was broken and the slot were the key goes was damaged,I had to fill the slot with Loctite 660 Quick Metal put a new key. The next day the liquid metal was still soft ,( I dint know loctite 660 WONT't work if it is exposed to air ) luckily that work it in my favor because the liquid metal was still soft but hard enough to live the perfect key form, I tape the whole thing and the next day i had the perfect Keyhole match.
I put the scooter back together and to my disbelief that thing started right up, for how long? I don't know. hope this will help someone also.
Still have the Dim lighting issue..... Replace the regulator / rectifier but no luck, need help. Thanks
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Clinician
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Post by nino on Mar 7, 2014 12:12:51 GMT -6
There is NO woodruff key, the slot is empty, photo coming soon
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Clinician
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Post by nino on Mar 3, 2014 11:48:18 GMT -6
OK. valve cover is off the piston is up dead center like in the photo and the rockers wont move, I don't have a Feeler Gauge jet but from visual inspection they look totally tight with no clearance
On inspecting the work done by the guy that replaced the STATOR(MAGNETO) cdi, and carburetor I found cooling fan has burn a hole all around the cover
and the flywheel groove/slot is damaged, the carburetor fuel air adjustment screw was out 3 and half full turns. HAAAA El Nino is mad!
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Clinician
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Post by nino on Feb 23, 2014 14:48:42 GMT -6
Everything on your list checked out ok, still no luck getting the scooter to start.
going back to what happened on the first test drive after replacing the carburetor,STATOR(MAGNETO)and cdi( the engine power went way down with couple of back fire from the exhaust and unresponsive throttle than cut off completely) I notice loud ticking coming from the cooling fan near the STATOR(MAGNETO) and the exhaust I think taking the scooter for a drive before adjusting the fuel/air mixture the idle was bad idea because the engine was not smooth and the rpm was going up and down. By the way I live in California and some scooters are not legal here because of emission restrictions, do you thing the new carburetor was not modify for California therefore not functioning properly? I still have the old one that I can clean and put back on.
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Clinician
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Post by nino on Feb 23, 2014 10:45:54 GMT -6
Thanks, plan to do this today and post the results
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Clinician
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Post by nino on Feb 22, 2014 13:09:22 GMT -6
Ok, Let's start from the beginning
The reason I replace the STATOR(MAGNETO) cdi, and carburetor because the scooter wasn't used for a while and will not stay running.
I should have replaced the carburetor first because that was the problem, with the new carburetor the scooter start right up.
The lights issue come up after installing the new parts.
Stator has a connector that has a W/Y/G connector.
On inspecting the Regulator/Rectifier I found the plug connecting to it was hanging down to low touching the steering mechanism and one of the wires ( the green one) was pinched, is this the ground wire? ( it is to short to cut and splice together,pinched neat the plastic plug any suggestions?).
Now for the main event....After replacing the STATOR(MAGNETO) cdi, and carburetor I notice the engine and exhaust was ticking loudly,tuke for a test drive and half way home the engine power went way down with couple of back fire from the exhaust and unresponsive throttle than cut off completely,
Is my engine toast? It turns but it will not start anymore. how can I tell if the engine is dead or not.
My apologies for my bad english I'm new to this country and your help is much appreciated!
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Clinician
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Post by nino on Feb 21, 2014 11:11:20 GMT -6
After replacing the cdi, magneto and carburetor my instruments and headlights lights are dim to nothing, they will only get bright if i turn on my
emergrncy blinkers and reved the engine up.Need help!
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