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    Exhaust Flappers

    install them or leave them out, its your boat... the purpose of flappers is to prevent water from entering the engine through the exhaust manifolds/valves. in the case of coming off plane, the wake wash that hits the transom can force water through the exhaust and into the engine, flappers...
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    wont shift out of reverse mystery issue

    no, like bondo and scott say the neutral safety switch is in the remote control. the switch in question is the shift interrupt switch located on the shift plate mounted on the engine. you need to verify its operating correctly, it is most likely the source of your issue
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    Hard shifting after new lower cable....sometimes

    r/mr/alpha one never had the shift assist, that is a gen ii thing the shift interrupt switch is used to allow the clutch dog to release from the gear in the gearcase, i.e. coming out of gear to neutral. if you are having an issue coming out of gear to neutral the shift interrupt switch is...
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    1984 470 initial carb set up to get idle

    keep in mind your engine is not fuel injected, you can't expect it to start by simply setting the choke and turning the key, there is a definite correct process to starting a carbed engine. pump the throttle, turn the key, set throttle to 1200 or so rpm once engine fires, allow choke to open...
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    malibu 5.7 mercruiser

    fuel dripping from venturis at idle or upon shut down indicate need to remove, disassemble, inspect, clean and probably rebuild carb guessing it's an mie ski tow with 2bbl carb?
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    1984 470 initial carb set up to get idle

    first set dwell then set remote handle at a point where the engine stays running, then set idle speed screw so engine stays running with remote handle in idle position get idle as close to spec as possible, set timing, check dwell again - adjust if needed. now you can set idle to spec (usually...
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    3.0 Alpha One Gen 2 Rear Motor Mount

    looks fine to me there is a spacer between the mount and bolt washer, yours appears to be in place
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    Hard shifting after new lower cable....sometimes

    guessing this is an mc1, r, mr, alpha, or gen ii based on your shift interrupt test comment there are a couple different styles of interrupt switch used over the years, sounds like yours is operational but may need slight adjusting, different styles use different adjustments yes, cable routing...
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    Water in gear lube

    you can drill it, chisel and punch it out thus destroying it and replace it with a new one but, you will need the special tool to torque it to spec, 190 - 200 lbs/ft
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    Water in gear lube

    remove threaded retainer and retaining ring then use a two jaw puller, requires long jaws and threaded rod. heat helps i find it interesting that in your first post you mention replacing the prop shaft seals however now you are having difficulty removing the carrier assembly. in order to...
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    470 4 barrel conversion, one cylinder missing

    eric and mike have you pointed in the right direction, i would add that along with fuel pump pressure at ALL rpm you should check fuel system vacuum as well, no more than 2 in/hg. a dropped cylinder is easy to detect with a cylinder drop test, pull ignition leads one at a time and check rpm...
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    Shift cable bellows........zip tie ???

    the only place i've seen as of late to acquire fuel line zip ties is from mercury marine. not sure as to the composition of material used in manufacturing them but seeing as how mercury sells them as fuel rated my guess is they are stout enough for securing a shift bellows without sever...
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    My boat goes as fast as...

    ...i can paddle it!! cuz its a canoe i dont own motorboats, i just work on em - and a lot of junk around the house too!! im one of those guys who will get as much use outta junk as i can 1991 honda accord with 310,000 miles and still goin!! ill trade her in on a '93 at 500,000...
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    Old Merc. 3.0L not 140hp?

    Re: Old Merc. 3.0L not 140hp? from mercruiser SM #2 note the hp rating and engine displacement between the 120 and 140
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    Impeller question(i'm stummped) maybe you know the answer?

    water should be present in the system as high as the surface of the lake water therefore, yes, the pump mounted on the engine is below the waterline - it should have water in it, no need for it to "self-prime" with the boat in the water take the pump apart and make sure the impeller is in good...
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    How To: Troubleshoot a Points Ignition System

    ***Please read through ALL the information before attempting any procedure listed here and before asking ANY questions*** ***This tutorial is designed to explain step by step the proper procudures for troubleshooting a no spark issue for an engine with points ignition. If you are here, this...
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    How To: Tune-up Your Engine with Points Ignition

    ***Please read through ALL the information before attempting any procedure listed here and before asking ANY questions*** ***This tutorial is designed to explain step by step the proper procudures for a COMPLETE tune-up of an engine with points ignition. If you don't know if your engine has a...
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