Hi Max,
Thanks for and the information. There appears to be a couple of manuals that cover this model (30" cut) and as best I can determine the model is the one prior (SP102?, the topside of the engine has cowling has a few grills in rows but no scoop). I surmise that Greenfield focused on manufacturing a very robust machine and areas such as cataloging was not their forte. I guess it is better to have a bullet proof machine with not the best of manuals etc than a machine routinely breaks.
I may draw on your knowledge bank with these machines to assist with some practical assessments of the design. Looking at the front end I noticed the King Pins feel like they have some play in them, I am not sure if there should be. Also, the pins look to rake rearwards, I noticed there are spacers between the cross member and axle beam, there are two bolts at each end of the axle beam, each bolt at the end of the beam goes through the beam, a spacer and the cross member. One of these bolts is loose and the other doesn't have a nut on it. I assume the axle beam is designed to move in a rotational plane but I don't know how much gap there should be between the axle beam and cross member. I looked at the SP102 manual and the spacers & bolts do not show however, the SP104 shows a backing plate , wave washers but no bolts..... mmmmm head scratch, is there a SP103 30" cut?
If what I wrote is hard to follow I can post some pics (if that is possible) .
Regards
Cjay