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    Lync and Sync 1988 - 40HP

    Lync and Sync 1988 - 40HP Page 1- 40 Service Manual 1987 Models 40 thur 55 Step 6 in link and sync? “Warning: stop the engine to prevent contact with rotating parts. To adjust the pickup timing, loosen the jam nut. Rotate the top of the thumb wheel toward the crankcase to increase pickup timing...
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    Flywheel Magnets for a 40 HP Johnson 1988

    1) Are the magnets built into the flywheel, are they just glued on so you can see them. Removed a flywheel and they must be in the casting itself, I cannot see anything except the metal of the flywheel. 2) Is there a way to check how many magnets there are? 3) Is the number of magnets = to the...
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    Installing rebuilt Power Head, which base Gasket to use?

    When replacing the power head, installing back on the midsection, the book said to install a new gasket on the exhaust housing adapter. In the parts page one gasket is called (adapter to housing) item 63, the other item 38 is (adapter to power head gasket). Which gasket? Johnson 1988 40 HP...
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    SmarTack KV meter readings for spark Plug Voltage

    I checked the Voltage at both plug wires with SmarTach TA100 KV meter = 12,000 volts at each plug. The book spec is about 40,000 volts for the ignition coil output for a 1988 Johnson 40HP that has a magneto-driven capacitor discharge ignition. Is this the correct reading if you use the...
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    Compression Test - 120/90 - 30 PSI difference or 25% and ( Bad Idle)

    I have a 1988 Johnson 40HP with the Vro2 oil pump.I have 2 questions: I checked the compression: •cylinder 1 has 120 PSI •and cylinder 2 has 90 PSI •a 30 PSI difference or 25%The engine starts, runs from 1500 RPM to 5500 like it was brand-new.The only problem is: it dies at idle when I set the...
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