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    2014 20 hp overheat sensor?

    My 20 hp is very sensitive to weed around water pump pickup. Starts shuddering immediatly on contacting kelp. No complaint there but Id like to know how it does this. Theres no time for engine to overheat it seems,so there must be a water flow sensor Im thinking. dealer says no but Im not convinced.
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    Whirring sound at low rpm from Alpha gen 2 on 5.0 carbed mercruiser.

    This is driving me a bit bananas.Distinct whirring sound from drive at say under 1200 rpm. In gear or out. No metal on drive magnetic plugs. No excessive gear noise at cruise ie when you lean over transom and listen. Steering side to side makes no difference. Take drive off and run engine theres...
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    What coil to use with tbolt 5 ignition on 2001 5.0 mercruiser

    Confused. Need a coil for my 2001 mc. Seems it should be pretty generic but maybe not. Its a mc part 392 8M0079202 regular round shaped coil. No idea if its ext or int resistor. Crossover seems to be a Sierra 18-5438.Updated mc number seems to be 300 8M0078202 maybe. This is where it gets...
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    Alpha Gen 2 upper gearcase rebuild,5.0 litre,1.62 ratio.

    I recently had a tooth come off one of the upper gears in the Alpha G2 drive. I noticed a slight change in vibes I guess right when it happened,not far from home dock. I pulled drive and found upper gears bad. Interestingly to me at least,no metal got into lower drive. I suppose because i got on...
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    Sideways alignment question 2002 5.0 MC

    I reinstalled my 5.0 yesterday,didnt mess with original alignment as alignment bar always slid in fine before. Still goes in fine. Thought Id slide in my 1 inch bar(never tried on this boat before) and see how it centred in the gimbal bearing. It is noticeably off to one side. Maybe 1/4 inch or...
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    115 suzuki prop shaft runout

    Helping neighbour who has a 115 Suz. Prop shaft runout measured at end of shaft(turning shaft) is 25 thou. What is allowable tolerance and where is one supposed to measure this?He backed down ramp with motor down,wrecked prop in process,even broke skeg off. Put a new prop on and he says it runs...
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    Alpha g2 zinc on bearing carrier,mercathode?

    Just realized a G2 drive has a zinc on bearing carrier in behind prop. Mine's gone of course,Merc dealer says he never gets requests for them. What is the deal? Do most people use them or not? Cant see evidence of corrosion in that area. Also, thinking of getting a Mercathode system.Anyone have...
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    Electric fuel pump info in merc manual

    Where does one find fuel pump info in a Merc manual? I have a 2001 5.0 carbed,recently aquired Merc manual(s) #31 for this unit. Am troubleshooting a fuel issue and would like to see what they say abt the elec fuel pump. Havent found a thing. Where do I look? Thx T1
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    diesel on alpha gen2?

    Reading the comments re "im on a boat"s ideas on a large gas engine on Alpha drive,Im wondering if the same "take er easy" principles would apply with a diesel . The torque values on several adaptable diesels in the 200 hp range are in the mid 300's similar to a 5.7 sbc etc,is this the guideline...
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    alpha gen 2 trim tab

    My Alpha gen 2 seems to not want to accept a trim tab the standard mc triangular tab either touches the prop(14.5x18 4 bl) or just clears(15x17 3 bl) I need a tab to compensate for torque now that Ive dumped my power steering,cant figure out what Im doing wrong. As well, with the tab cranked...
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    anybody else paint their outdrive?

    19 years ago I painted my alpha drive,trim tabs,aluminum swim grid braces etc.,along with underwater portion of f/g hull.Used interlux f/g bottomkote.Didnt know any better,seemed like a good idea at the time. Boat was in saltwater all year round,every year, except for twice annual...
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    Gen+ Mercruiser?

    What does it mean when a parts listing ie carb says it is good for 1997 and later Gen + Mercruiser engines(5.0 litre in this case) http://www.sterndrives.com/carb_chart.html
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    What is "Gen X" in Mercruiser speak?

    In looking for a match in mercarb numbers for a 2001 5.0 litre, I come across 1997+,Gen X.What does thios Gen X mean? Thx.
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    upgrade to edelbrock 1409 from mercarb on 2001 5.0/alpha

    How does going to 4 bbl work? I get it from research that I get more top end power. What about hole shot power?ie when you floor it to get on plane,assumably linkage causes all bbls to open,but does it give any more powerat those lower rpms? Also,will the 1409 go on my stock mercruiser-mercarb...
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    Anchor roller for Claw anchor

    Bought a 16 lb Claw for my 23 foot Trophy,trying to figure out how to mount it,existing"standard" bow roller lets anchor rock back and forth.I see in West Marine various bow rollers for Claw anchors its not clear to me how they hold anchor firmly.Does it somehow jam up against the bail?in which...
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    improving fuel economy on 5.0 mc with alpha 1.62,poss. switch to 5.7

    Have a new to me 2359 Trophy with 5.0/alpha,1.62 gears. running the 14.5x18 4 bladed prop I got with boat,havent tried any other props yet. Getting about 9 gals imp/hr 27 mph. Need to run 3650 rpm to get that. The boat is likely overpropped a bit as max rpm is 4300.Merc recommend 44-4800 max...
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    2 bbl to 4 bbl on Merc 5.0 Alpha gen2

    Boat is 2359 Trophy I have the stock 2001 5.0 M/C 230 hp I believe. Wide open is 4200 4300 I cruise at 27 mph at 3700.That scene is ok but Im not happy about my fuel consumption as well as I would like a bit more peak power,not to be used except in heavy going etc.Im struggling and pretty well...
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    engine oil change 5.0 m/c

    Cant seem to satisfactorily get oil out via dipstick tube. Eng. is a 2001 5.0,new to me, dipstick tube does not go to bottom of base, only a 1/4 tube will fit down dip.hole and in to oil; and my manual standup 8 litre plastic vacuum sucker doesnt seem up to the task. Am getting 24 inches of...
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    20 hp Honda hard to start when a bit warm

    Anybody know the answer to this. 3 yr old 20 hp Honda, runs great, starts well cold, but after a few minutes running... ie partly warmed... it takes maybe 8 + pulls to start. Tried varoius comb.s of choke cannot seem to solve it. Buddy with 9.9 Honda has similar prob.Must be some trick to it I...
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    adults only section

    Have seen a few references to Adults Only section ie as a place to download manuals etc. How exactly does one find this section?
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