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Old 03-31-2018, 07:56 PM
Ryancoolwind Ryancoolwind is offline
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Join Date: Dec 2017
Location: Harleysville, Pa
Posts: 21
wait, are there suppose to be bolt heads or something on that rotating plate? the om617 engines have bolts on top of that plate and im wondering if theyre what actuates the diaphragm in and out? it also looks like the om617 and om621 pumps could possibly interchange??
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