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    1977 Mercury 850, Difficulty finding correct trigger

    When I look up part diagrams for a replacement trigger there are two options, and straight and curved linkage arm. The trigger that came off my current motor has a curved linkage arm, but upon choosing that option the information that comes up states the curved linkage arm option is for later...
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    Mercury 850 thunderbolt (cannot determine the year)

    Yup! They are also blue. I’m looking to get a service manual for the engine because I want to check everything. Do you recommend a certain site/brand to purchase a manual?
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    Mercury 850 thunderbolt (cannot determine the year)

    Hello all! I started a restoration on an old mercury 850 thunderbolt. I found the serial number but I cannot for the life of me find anything online that corresponds with that serial number to the exact year the motor is. Any help determining this would be appreciated! The starter has a date...
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