The Ambac M100 supply pump assembly has four check valves, two internal and one each at inlet and outlet ports. When the hand primer does not work then one of the internal valves is not right. I can repair it, or I have another assembly if it can't be repaired and needs replaced. Common problem is the primer leaks, but I always reseal them when I have the injection pump apart.
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Today's Featured Article - Talk of the Town: The Saga of Grandpa's Tractor - by The following saga is from the Tractor Talk Discussion Forum. Someone. The saga starts with the following message: Hey guys I have a decision to make. I know what you all will probably suggest and it will probably agree with me way down inside, but here it is. I have a picture blown up and framed in my "tractor room" of a Farmall M. It was my Grandpa's tractor, of which whom I never got to meet. He froze to death getting this tractor out of the barn to pull a truck out of the ditch before I was born. Anyway my dad and aunt had to sell it at the auction,
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