CBR 600F3 1995 - 1998 CBR 600F3 Forum

F3 Electrical Stumble

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Old Nov 27, 2023 | 11:39 AM
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Spduffee's Avatar
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Default F3 Electrical Stumble

Hi All,
I'm no stranger to renovating bikes, cars or planes, but this 95 CBR 600F3 is new to me. It was running when I got it. I switched everything over to a titled frame, hooked everything back up as it was ( or so I think), but nada. I have power at the switch. Both the kill and start work. Juice gets through the start wire to the 4-pin connecter on the solenoid, but that's where the fun ends. No fuel pump noise, no starter turn over...I bridged the solenoid poles and the starter works.
Solenoid is shot, I guess? The ECU, maybe? Usually the ECU wouldn't prevent a turnover, would it? Am I overlooking a common ground somewhere? I'll figger it out eventually, but a friendly tap on the noggin helps...
I actually did not snap a single photo after I brought it home, very atypical of me. The attached are how she looks, right now...

Not much to see now...

 
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Old Nov 27, 2023 | 12:41 PM
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check the sidestand and clutch switches - it won't fire the starter if it's in gear and the stand is down, or in gear with the stand up and the clutch not pulled.
 
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Old Nov 27, 2023 | 01:19 PM
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Thanks for that. I'm sorry that I forgot to include this is a former track bike. All of the safeties have been bypassed or eliminated. I did just go double check to see if the wire leads were there, but no, they're not. That didn't change. Good suggestion, though, made me double check...
 
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Old Nov 28, 2023 | 10:48 PM
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Well, I'm dumb but happy...Not a bad way to go through life, I guess. After reading yesterday's reply about checking safeties, I studied a schematic that just had the Start Circuit. I also stumbled on a 3-pin connector (G/W, Y/B, G) whose G/W wire was energizing when I hit the start button. Since this was a track bike, it had no kickstand. This 3-er plug was for the kickstand. It must have been grounded before my frame-transfer, because as soon as I grounded it, it turned over. D-oh!!!
It was driving me crazy....
Thanks for the nudge in the right direction!
 
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Old Dec 2, 2023 | 06:39 PM
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Here is a photo of the F3 assembled, right after a test run. She rides nice, but I have some tweaks to make - throttle, chain, clutch. Front wheel wobbles a bit, even though it was perfectly balanced by the shop...I have a street 95 F3 that I just picked up. The racer F3 sits 1" higher in the back, even though everything looks identical. Will see what that's about...
 
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Old Dec 2, 2023 | 09:55 PM
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Woohoo!! Good work!
 
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