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| 73-74 CR250 timing help https://vintagedirtbikeforums.alp-sys.com/viewtopic.php?f=21&t=1652 |
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| Author: | ktm450exc [ Sun Nov 25, 2007 7:59 pm ] |
| Post subject: | 73-74 CR250 timing help |
I have a CR250m (just put together) that I'm checking the timing on and need some advice/help. It has the original ignition and I have a dial indicator setup. I need to know how to set up a test light???. Or what else can you use?? When I tried to set one up ( test light) with a 6volt battery and a bulb I could'nt get it to work, It stayed on all the time when I turned the crankshaft even when the points seperated. I hooked a battery up with a bulb in series and connected it to the wire coming out of the points/rotor and the grounded the other end to the frame. As I said the light came on and stayed on. Was it hooked up right? PS the bike seem to run pretty good so I know the points are operating but I just want to double check the timing before I ride it in anger thanks |
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| Author: | Gary Starr [ Mon Nov 26, 2007 9:26 pm ] |
| Post subject: | Re: 73-74 CR250 timing help |
It's been many years since I did a CR, but I think you should disconnect any wires going to the points,ie condencer etc and try it again like you did.My MR 250 is not done the same as a CR,you just set the points to the proper gap and your done |
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| Author: | Van/TX [ Tue Nov 27, 2007 1:19 pm ] |
| Post subject: | Re: 73-74 CR250 timing help |
Long ago I would check the timing of my '73 XL350 using a small transitor radio. Don't know if those are made any more. I would slowly turn the crank with the radio not tuned to a station. When you hear a crack (static noise) that means the points sparked and the timing marks should line up at this point. A piece of cellophane in the points with steady pressure will give pretty much the same results. This won't tell you if the advance is working of course. Good luck....Van |
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| Author: | ktm450exc [ Tue Nov 27, 2007 4:29 pm ] |
| Post subject: | Re: 73-74 CR250 timing help |
thanks for the replies, I got it worked out. I saw an article where a guy suggested using a cigarette paper between the points to tell when they opened. So off to the store for some and they worked! |
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