The CKP sensor is located under the right engine cover along with the clutch. If you can find a You Tube video of a clutch replacement on the NT you will see 95% of what's required. There is no gasket on the right cover so you should use a sealant such as Honda Bond. Permatex gray motorcycle sealant is the equivalent and is much more available. I believe you said you have the service manual and that outlines the procedure quite well. IIRC the manual says to remove the muffler and front pipe. The muff does need to come off and prepare to use your cussifier and caution the women folk and children to cover their ears. The front pipe should be loosened although several on the forum have been able to extract the cover without loosening the pipe. Use the torque specs in the manual as you will be dealing with aluminum castings.
Ok, I believe it’s called a Pulse Generator?
That is the part's official name. A few of us on NT-Owners are not all that official, or we couldn't remember the real name.
He... he... he... you will find at times that there are many names for the same thing. Interestingly, in the parts manual the part is called a pulse generator which is exactly what it IS. In the service manual however, it is called the CKP (crankshaft position sensor) which is exactly what it DOES. About 20 years ago, the SAE (Society of Automotive Engineers) made an effort to standardize automotive nomenclature worldwide in an effort to avoid confusion. The name/abbreviation for the crank sensor became the CKP. As you have found however, the public ignored the best efforts of the SAE and continued to call stuff whatever they damned well pleased
. In fact, the "official" name for the alternator became the generator so you can see how successful they were.