Greetings fellow foccers.
Seem to have an issue with the better half's Fazer 600. I had running problems low down on gentle throttle, which I diagnosed as carbs out of balance (my Fazer thou does similar stuff). So I purchased the carbtune, and used the instructions on here to balance the carbs.
First step on the destructions was to check/alter the TPS, so switched on ignition, disconnected TPS, reconnected and it read 10k (just over) so I figured I was in setup mode and it needed adjusting. Undid screws and turned it every which way but Sunday and it made f'all difference to the reading on the tacho. I removed it completely, blew on it and looked at it REALLY hard, reassembled and there was a glimmer of hope as it briefly flicked to 5k and then 0k on the tacho, but then back up to 10k again. Only the once though. After that, every so often, when turning it back and forward, the needle might flick vagually toward 7k, but then back up to 10k again. Please note, its not that I am able to get it to say 0k or 10k and just unable to find 5k - I cannot get it to say anything BUT 10k where-ever I stick the damn sensor.
I tried to find how to get the tacho to report an error, it will give me an error of 3k if I disconnect the tps completely, but I figured that is normal? Doesn't seem to give an error when the tps is connected. Anyway - is it broke?
Second step was I stuck the tps in vaguely the same position, and slapped on the carbtune. Balanced the carbs as best I could, but the readings were leaping around all over the place, eventually I found that holding the revs around 3k with one hand and altering the screws with the other seemed to work, and I got it close after a lot of swearing. Reassembled and went for a ride, and its a lot better, but not quite right, I guess the tps isn't right?
Lastly, a very important note to people doing the same... RTFM. After all of the above and packing the bike back in the garage feeling grumpy... I read the carbtune sheet, and they detail how to add the suppressors/absorbers into the carbtune rubber lines. This would have given me a much better balanced set of carbs and would negate the daft throttle holding issue I had - oops! If you are going through the same walkthrough, make sure you read the carbtune booklet and make your rubber tubes up correctly first!!