I've not changed anything brought it at a garage sale old boy been into series 1 2 3 and classic rr and p38s shed load of stuff in all states .the engine has new chains new sprocket head looks new or good rebuild pump does not look very old but can't find one dot or 6 or O to set it up by and I don't want to pull it all apart because can see all seals and gaskets are new so just hoping for maybe someone has come across this before and worked out away of doing this