Thread: 300R Question

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  1. #1
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    300R Question

    Is it ok for dealer to leave the fuel primer bulb used for the Optimax in the fuel supply line from tank to engine? If not , what problem could it cause?

  2. Member
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    #2
    You are supposed to have 3/8” fuel hose from tank to motor. With the bulb you may be starving the motor.
    If I remember right the out side of bulb is 5/16”
    Last edited by spider1; 12-05-2018 at 05:47 PM.







  3. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    #3
    That engine requires 3/8" line straight from the tank to the engine. NO BULB.

    Improper rigging (or damage caused by improper rigging) is not covered under the Factory Warranty.


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  4. Member
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    #4
    It has 3/8" line but , I noticed the dealer left the primer bulb in line. I'll remove it.

  5. Member
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    #5
    I would replace the complete fuel line with a single hose. No splices