Heya

I went on a mission last night to try and resolve my neutral light and oil leak issues, I pulled the neutral sensor out and replaced the it's o-ring, hopefully this will solve the oil leaks. After removing the sensor i shone a light into the sensors housing as i changed gears I could see that the recesses where the pins at the end of the sensor fit, would rotate, So it appears the mechanism that gives the sensor input is working, although i'm not sure if it's orientated correctly. Closer examination revealed there are more then the 4 wires going into then i thought. Why would a neutral sensor need any more than either one or two wires, the answer came when discovered the wire diagram here. It's not just a neutral sensor it's also tells the PGM what gear the bikes in, following the wires back i discovered that the pervious owner had combined 3 of the wires in too 1, I'm think he did that to fool the PGM into thinking that gears 4,5,6 are actually 4th gear, the only reason i can think of to do this is to fool the PGM that the bikes is going slower then it is. Perhaps to get around a speed limiter maybe someone who know something about NSR's can confirm this. I have seen the neutral light come on at weird times, so i'm leaning towards maybe the sensors faulty. Tonight i'll test for continuity across the sensor as i change gears on each of the wires to it. As the gearbox must be in one of seven positions, I think if the sensor is detecting neutral the green and red wire should be earthed, failing that i'll check it's not the other way round and it's the other 6 wires that are earthed. if there all the same when it's in neutral then i'm picking it's the sensor.

I really have enjoyed working on the bike, most of my pervious bikes where ZXR400's and their much harder to work on. Everything on NSR seems well thought out and logical from what little i've seen. The electrics also seem far more advanced for it's age then anything else i've owned, I feel if the designers had been allowed to push a bit further with just a few tweaks it could of had various ride modes, all the eletronics is there it just lacks the ability to change the engine mapping at the touch of a button like some modern bikes.

I'm almost looking forward to removing the transmission.

Cheers

Robert