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TS185L Starts and runs, revs fine at idle, won't go over 30MPH TS185L Starts and runs, revs fine at idle, won't go over 30MPH
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  #1  
Old 24 Apr 2009
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The ignition timing is meant to be set in the center of three lines with the induction timing light, at 4,000 RMP. it's actually set at the bottom line, not the center, so it's about 2mm's off. is that enough to cause it to do that?
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  #2  
Old 24 Apr 2009
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Hey EAnchak. I battled the exact same demon on my 82 ts. All the symptoms were exactly the same as yours. It was damn hard to start cold yet seemed fine once warmed up. I could rev it past redline in neutral but as soon as it was under load it had nothing. When I leaned out my carb jetting it ran better, but still not right. Turns out it was the ignition coil. It was producing a spark, but it wasn't hot enough. Leaner mixtures burn hotter which is why leaning out my jetting helped. If you can swap coils with a known good one you can be sure. Good luck !
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Old 24 Apr 2009
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As for the timing, it's better to under advance than over advance. Ideally though, it would be set so that at the fully advanced position (4000rpm on the 71 model?) the middle mark lines up with the mark on the crankcase. To adjust the timing, make a note of the distance by which it is off, then rotate the stator plate that same distance in the direction required to advance or retard the timing.

Suzuki state that to ensure perfect timing, users should line up the mark on the stator plate retaining hole with the corresponding mark on the side of the crankcase. This doesn't work for me though. Magneto air gaps increase, wires corrode and increase in resistance etc, etc. I just use the 'trial and error' method listed above.
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Old 24 Apr 2009
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That was the conclusion I was drawing nearer to (and dreading).

Do you know how to get to the coil?

I can't seem to figure out how to get the magneto cover off. There appears to be only one large nut holding it on, in the center. But it spins freely with the magneto. How do I hold the cover still, while I loosen the nut, or am I just going about it all wrong?

Since my last post, I've de-carbonized the head and piston, and everything makes it sound better at idle, so hopefully, if I replace the coil, I'll have a damn fine bike.

Please let me know if you can help out, as far as knowing how to do the job.

Thanks very much

Ed
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Old 24 Apr 2009
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Just saw your second post, and I have the same question as to how I can get the magneto cover off.

Ed
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Old 24 Apr 2009
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Wait, now that I've replied 3 times in a row on my own thread, I have another question.

Are you talking about the coil in the magneto for ignition, or the coil for the spark plug for ignition?

Not to sound stupid, but don't those have the same name.



Ed
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  #7  
Old 24 Apr 2009
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In my case it was the ignition coil that the spark plug and HT lead connect to (bolted to the frame underneath the fuel tank). To remove the magneto you'll need to select 5th gear, then undo the retaining nut. After that you'll need a flywheel puller. Before getting behind the magneto though, I would suggest that you try Will's ignition coil as his bike appears to be running well.
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Old 24 Apr 2009
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Will do (first thing in the morning).

I'll let you know how it turns out,

Ed
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