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Recent content by nauticalsun

  1. N

    Restoring 1977 Mercury 500 50 HP

    Okay got a different gas tank with a new gas line, filter, and pump bulb, - cleaned and flushed out the carbs with cleaner and added some sea foam to the mix. Motor is running out well with acceleration much improved but jerky but am just testing in a barrel of water. We did find out that one of...
  2. N

    Restoring 1977 Mercury 500 50 HP

    Outboard starts fast and runs fine but after a few minutes water then as well steam appears out the telltale pipe and upper ports so am suspecting a clog or thermostat or blown gasket problem in the water jacket system, but the manual isn't very clear about even if this model has a thermostat...
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