A nylock nut will be a lot easier than bending the PD 23 lock washer shown on the MO14. The PD15/1 has a small tapped hole. I don't know what that hole was intended for but I have put in a small drilled bolt and lock wired it to my drilled 198 nut.I use the PD17AS on my Prince with a half depth nylock nut without any problems.
Hi - yes, nyloc would be good, I shall look out for one.A nylock nut will be a lot easier than bending the PD 23 lock washer shown on the MO14. The PD15/1 has a small tapped hole. I don't know what that hole was intended for but I have put in a small drilled bolt and lock wired it to my drilled 198 nut.
Good idea about the long bolt to help when manoeuvring the sprocket. It is a bit of a juggling act in an awkward space. I also don't bother with the lock washer.I use the treaded hole in the PD15 sprocket to put a tempory long 1/4 BSF bolt in. Then you can hold the bolt to easily manouver the sprocket through primary cover and into place. Once positioned then remove the long bolt and put a short one in which is drilled across the head to allow you to wirelock it to the 198 nut. I have never used PD23 tab washer as without that it allows 198 nut a bit more thread to engage. Also use a small amount of Loctite nutlock (weak version) on nut 198.
Simon