OK, my own problem related to that service memo:
I have a Homelite XL-500 that I have owned since it was new. It is in good shape except for a hot running problem that I believe is in the ignition somewhere. I purchased the parts to convert it to electronic although I have not completed that conversion yet. I saw in the 1966 service memo, #306 dated 3/31/66, that parts were then available to switch to the stronger 31 roller rod and crank and all the part numbers needed were listed. My plan became changing the case and crank to the revised version if the parts ever could be found.
With the ignition off my saw I can see the part number on the case, 58410-C. Since this saw has a longer stroke than any of the other XL's, the case needs more room to swing the rod big end. The service memo lists PN A-59801-B which is superseded by A-59801-C for the big rod. As you can see, these do not match what is in the saw. Other numbers are listed for the other shorter stroke saws.
I checked two other parts saws I have, both SXLAO's, one has 58410-C and the other 58401-E. Both of those saws have the shorter stroke of the standard SXLAO so I am confused about what is going on.
I have been unable to find the 58410 number anywhere, the IPL I have for the XL500 lists the 59801-B as original equipment. Since I have owned this saw from new, I know it has never been in a shop for a repair of any sort.
Can anyone shed some light on this part number issue?
Thanks,
Dan