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Old 07-17-2009, 06:22 AM
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Default 78 RM 250 timing issues

Hi. I just recently aquired my newest toy. Its an 1978 RM250. I've put a lot of time and effort into her but just can't get it to run right. It came with a Clymers but it doesn't get into the stator timing too well.
It shows there are 2 types (with bolt pattern either horizontal or vertical. It also shows the timing mark on the plate under the top bolt ( for me). What it doesn't show is where "exactly" to set that mark. I thought there was supposed to be a mark on the casing but theres nothing there.
I've been trying different spots and the small changes are dramatic but no sweet spot. Obviously if this setting is out I won't be able to fine tune the carbies either.
So....if anyone knows something I don't about this bike, or.....Someone knows how I can set the timing manually please let me know. I really want to ride it.
Mike
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Old 07-17-2009, 07:04 AM
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I am not going to be of much help here but I did run across this site - it may be of some use:

Suzuki Two Stroke fans - Suzuki 2 stroke service bulletins

Scott
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Old 07-22-2009, 07:49 PM
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Thanks Scott....

I've been playing witht the timing and trying it out. Even small movements make a big difference meaning it could take a while to figure it out. Like I said...without the timing right then the carbies will never set up properly either......
On a good note I found the old crank half witht eh notch in it. (just today) I also have bids on a spare engine at a local auction. Might help too...

Mike

Sorry for the name confusion....I started the thread under my sons name and continued under mine..

Last edited by targis34; 07-22-2009 at 07:50 PM. Reason: esplanations needed
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Old 07-24-2009, 12:15 PM
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Quote:
What it doesn't show is where "exactly" to set that mark. I thought there was supposed to be a mark on the casing but theres nothing there.
I'm not a Suzuki expert, but I play one on TV. Actually, I Have a good friend
who IS a Suzuki expert. I'm forwarding your question to him and will post his
response.

dogger
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Old 07-28-2009, 02:25 PM
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According to my Suzuki expert, The timing mark that is cast into the
adjustable stator plate needs to be centered on a bolt that should be
directly across from the timing mark.

Hope this helps.

dogger
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Old 07-30-2009, 04:53 AM
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Sometimes the black box will be bad and the bike will run but not run right.
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