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    timing marks on old merc

    of all people/places gave out info.. yours worked. THANKS ALOT. old merc cranked on first turn over. idle ok. THANK YOU, Bra549.
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    timing marks on old merc

    i used a electric impact to remove nut off shaft. used gear puller. 5/16 socket to remove bolt off belt pully.
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    timing marks on old merc

    1975 65hp mercury outboard motor. long shaft. s/n 4043490. 3 cylinder. the flywheel has 4 dots. one on right marked #1 tdc. the one farthest left marked timing belt. no sticker. flat spot on shaft pointing to #1 tdc. timing belt broke(old age?). A. do I rotate flywheel till #1 tdc mark on...
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    firing order

    big thanks for info. when weather clears up, get on it. let you know how it goes.
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    firing order

    the firing order for 1975 mercury 650 3 cylinder is 1-3-2??? backfires thru exhaust. has spark on 3 cylinders. maybe wires been crossed?
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