So im helping a buddy out with his 4640e gehl that he bought(non running) it had the injection pump off to replace it and I'm trying to confirm the injection timing for it. It has a yanmar 4TNV98-ZNMS2F motor and the pump part number 729939-51320 that was replaced. So the old pump has a 55 stamped on it and the new has a 49. From my understanding the 55 pump would be 15° of timing and the 49 would be 13.8 would I be correct with this assumption? Any help would be appreciated if anyone has fir chart info access to confirm what im assuming. I wasn't around when he started this project but some how got asked to help mid way into the project. Lol just my luck.
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