A model G tip.
This is not about your friends problem, but the G has a bad name for cracked blocks. Near the drawbar supports, the decal is supposed to read Do not hitch to anything besides the drawbar. If you hook a chain to the supports, (very handy place) they will bust the block if you should jerk the chain. Note the two bolts on each side are designed for a downward pull, not sideways.
Another thing about the G, is that you are supposed to store it with the clutch locked down.