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    Bizarre Idle Situation

    1977 Mercruiser 228 (350) Symptom 1: Runs great at higher RPMS, cuts off when bringing back to neutral at about 1100 RPM. I have got it to idle great at about 700-750 RPM twice, by adjusting distributor, timing 8 degrees above TDC. However, I go back after a while and try it does the same thing...
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    Neutral Safety Switch Testing Detached

    Mercruiser 228 (350) 1977 Beachcraft Does anybody know how to test a neutral safety switch off the boat. Two terminals and the plunger. Does it need electricity running through it? Thanks.
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    Gimbal Bearing Tight

    1977 Mercruiser 228, 350 GM motor Hello, Installed a gimbal bearing. Used the proper driver, did not damage the races, yet very tight and won't turn freely. It appears seated up against the grease seal and grease is getting to the bearing. Any thoughts? Thanks.
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    Motor stalls when shifting

    1977 Mecruiser 228 (350 motor, not 305) I have tested the switch interruptor switch and there is continuity when closed, so, I don't suspect it now..but no expert. However, I have rebuilt the Q-jet and ran with no choke, because the old divorced choke coil thermostat on manifold is gone. I can...
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    Power Trim Pump Motor Issues

    I have 1977 Mercruiser 228 that have replaced with a 350. The power trim pump motor worked for a few seconds and then stopped. When I pushed the, I believe, the bottom button (In) a looked under the dash and saw a little smoke and spark. I took the pump motor off and it was grimy and corroded...
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    1977 Mercruiser 228 - Wiring Assistance

    I have a 1977 Beachcraft that has a Mercruiser 228 (305) that I replaced with a 350. The wiring from the harness is pre BIA color coding, so most diagrams don't match colors. I have three black wires from the harness plug in - 1) One that goes to alternator, 2) One to ground) and 3) One to...
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    Mercruiser 228/260 Slave Solenoid Mounting Bracket

    I bought a Merc 228, but a 350 has replaced the 305. After piecing everything back together, I can't seem to find where the slave solenoid is mounted. I have manuals and searched everywhere, what I need is a picture or very detailed location. Also, I bolted the wiring harness to the manifold...
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