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    2005 Yamaha 150HP water pump drive shaft leaking.

    Install new Yamaha water pump kit on my 2005 150HP. Started engine with muffs on, observed large amount of water shooting from the small drain hole on the side. Removed lower with muffs still on and noticed water bubbling up around the drive shaft which explained water at the drain hole...
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    Hard To Shift

    2003 Mercury 115HP O/B has become increasingly hard to shift (never did shift smooth like my I/O) over the past 4 years that I've owned it. When I last changed the water pump the shifting mechanism seem to work very good. I've opened other shift lever boxes in the past and know they can easily...
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    Replace 2002 115hp lower unit

    When shifting into reverse it makes a short gear grinding noise and sounds noisy when running with water muffs but works okay. I suspect reverse lugs are worn or something like that. I have an opportunity to buy a 2007 lower in good condition, the only thing I see different is length of shift...
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    Install Lower Unit

    Need help installing my 2002 Mercury 115hp lower unit. I changed the water pump and now I can't get the lower gear case back on. Gear shift lever is in forward position. The splined drive shaft lines up okay but cannot get 6" long shift shaft to line up. I know there is a simple procedure to...
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    Marine toilet

    I need parts for the toilet (head) in my 1979 Carver. It's the kind with a small holding tank attached to the porcelain bowl (not portable) called a gravity flush through a foot operated half ball valve. I think it's a Mansfield but I can't make out the name tag. It also has a hose for vacuum...
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    Exhaust Flappers

    Re: 1999 305 Mercruiser fresh water cooled I'm sure this subject has been discussed more than most people care to remember but, it's still a question for me. When I removed the outdrive for normal service I noticed what was left of an exhaust flapper lodged next to the shifting linkage. I...
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    Outdrive oil drip

    My 1999 Alpha one gen 2 has a slight oil leak at the split line. I removed the lower half and noticed lots of oil on the splined shaft. Next, I removed the upper half, plugged small oil passage to lower and filled upper with oil. Oil poured out through center hole in female splined shaft. I can...
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    Out drive oil

    1999 Mercruiser Alpha 1 Gen 2 - The outdrive has a small oil reservoir, my old Gen 1 did not and worked very well. My question is: is the oil reservoir necessary, and if not, what needs to be done to do away with the reservoir and just fill to the top oil plug? Thank you...
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    Fouled Spark Plugs

    I recently bought a 1999 Bayliner Express 2452 in very nice condition. When starting the Mercruiser 5.0 engine every few days and letting it idle I notice the engine starting to get sluggish and eventually stopping and unable to restart. Changed sparkplugs and started first crank but, noticed...
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    No Spark

    My 1999 Mercruiser 305 engine with Thunder Bolt ignition has no spark. Engine always started and ran well, that is, until the last time I started it. Engine started and ran very rough until it finally stopped, tach was swinging between 1000 and 3000 RPM. With ignition key on purple wire has no...
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    Fuel gauge problems

    The fuel gauge in my 1979 SeaRay only reads 1/4 when tank is full. I believe Medallion Instrument B-1321 is faulty. When I look on line for a replacement float arm style sender to replace the B-1321 it gives me several options. My question is: are all senders 240-33 ohms, and if so, do I just...
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    Alpha 1 Gen 1 Assembly Priblem

    1979 Mercruiser Alpha 1 Gen 1 - Installed new water pump and everything looks good but, cannot get bottom half to slide back into place. It stops about 3/4" of an inch from going back together. Spline shaft is well greased, just acts like it comes up against a hard stop and I don't want to force...
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    Exhaust Manifold Heat Problems

    1979 Sea Ray 268 with heat exchanger, engine temperature will not get below 190 degrees at 3000 RPM cruising speed. I have two different log style exhaust manifolds. Port side manifold has large water passage cross section where the starboard manifold has a small water passage cross section...
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    Water leak

    My 1979 SeaRay 268 was moored for 3 years with very little use. I raised the outdrive full up to change the prop and ran the engine for several minutes, a few days later I noticed about 4" of water in the bilge. Pumped the water out and dried the bilge, started the engine and noticed water...
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    1979 200HP Mercury "Trailer" Position

    I recently bought a 1979 200HP Mercury O/B with a jet pump. The controls have a push button switch labeled "Trailer" this will raise the motor. My question: How do I lower the motor? Cannot find a switch for lowering. Looks like there is a manual valve on the hydraulic unit for lowering but...
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    1986 Mercury 25HP "No Pee"

    I'm sure someone knows exactly what I should do. Recently I acquired a 1986 Mercury 25HP S/N 0A97255. It looks to be in perfect condition, starts good and has good compression 120 PSI but, with muffs or in the tank no water comes out of the pee tube. Water pump is good, lots of water flows out...
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    Y Tube Shutter "Flapper" Maintenance

    79 Sea Ray 260HP - I installed a rebuilt sea water cooled 350 engine and set it up for fresh water cooling with heat exchanger. Log type exhaust manifolds are clean and I have a 145 degree thermostat. The engine slowly heats up to 195 degrees and stays there at 3100 RPM and cools down at lower...
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    Over Heating

    I changed 350/260 HP engine in my 79 Searay. Old engine had NGK BR6FS spark plugs, new engine came with NGK YR5 V Power spark plugs. New engine has a 145 degree thermostat but runs much hotter. My question is; do I have the right spark plugs? I've heard that spark plugs can make a difference in...
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    Heat exchanger

    I recently bought a rebuilt 350 engine for my 1979 SeaRay 260. The engine was setup to run without a heat exchanger. I want to use my heat exchanger. My question is, do I need to make any modifications to the exhaust manifolds and exhaust elbows? Was told that the plate between the manifold and...
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    1995 10HP Honda Oil

    I want to change oil in my 1995 10HP Honda Outboard Motor. What type of oil should I use in the crankcase and what type of oil should I use in the lower unit. Any other comments or tips for servicing this motor would be appreciated. Thank you, Dennis
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