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How to adjust your Throttle Position Sensor (TPS)
It is worth checking your TPS, your bike will run a lot smoother if it's out and readjusted. The TPS is a variable resistor (which is a coil of resistance wire with a wiper on it) and the wiper loses tension over time which increases resistance a little.
Adjusting your TPS
1. Set your idle RPM to 1100 RPM.
2. Take the Fuel Tank off
3. The Throttle position sensor is to be found on the left hand side of the throttle body, the connector runs up in front of the air box in between numbers 2 & 3 cylinders, you have to disconnect the 3 pin connector with ignition off (it's in a bit of a tight spot and you might need to cut a few cable ties
4. Using a multimeter, read the resistance of the TPS between the yellow and black terminal, it should read 1.1 Kohm or 1100 ohms with the throttle closed and 4.3 Kohm or 4300 ohms with the throttle open. (It helps if you can make up a connector or use some small alligator clips on the pins to free up your hands)
5. To adjust, you loosen off the two screws and turn the TPS, most people run out of adjustment on the lower end, mine stopped at 1140ohms but the bike runs fine, my top measurement was also out but the bottom one is the one you want as close as possible.
Some people have pulled out the brass collars to get more adjustment and others have needle-filed the female holes on the TPS.
