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    Hydrodrive Inboard cylinder for Outboard use

    Hi all My friend gave me his hydrodrive steering system, its for a side mount for an inboard setup. I am wondering if anyone has tried to install this on an outboard motor. I am in the process of doing this but found that i cannot get full range of motion when turning steering wheel to the...
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    Alpha One Gen One yoke shaft resistance

    Hey all, I am in the process of rebuilding my alpha one sterndrive and I am following along with the service manual. I have completed the shimming procedure using the appropriate tools for the drive gears in the upper housing. Also, I have made sure that the proper torque has been set for the...
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    Water coming out thread on water pump assembly

    Hi all, I am taking off a water pump assembly from a mcm260 V8 5.7L Mercruiser and noticed water pouring out one of the threads located on the bottom right. I’ve attached a picture and hoping someone can tell me if this is normal or rather a crack in the block. best, Dan
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    Stator issue causing low voltage on switchbox leads?

    Hi all I am trying to determine why I have low voltage coming from my switchbox (green/white and green/yellow leads). The switch box and trigger is brand new but the stator is used. Using the CDI troubleshooting guide for Ohms and DVA readings I found that the stator voltage output on the LS...
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    PRUFREX MPP 491 switchbox color code

    Hi all, I picked up a 1989 25HP mercury outboard (s/n C15247) and i purchased a stator and trigger coil from Marineengine.com. I have identified which leads go to which trigger but I cannot figure out the stator set up to the switchbox. On my Prufrex switchbox (made in Germany) i have two...
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    Same HP different Ignition system

    Hi all, I have two Merc outboards that have the same HP except one is newer (1994) and the other older (1989). I want to know if it’s possible to swap out the flywheel, stator, trigger, and switch box from the old Merc to the newer ignition system. 25hp Merc s/n C152493 25 hp Merc s/n...
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    Unusual sound or maybe not?

    Hey all Just bought this 1996 100hp mariner, she runs great but I am hearing clicking sound coming from the head or flywheel. It sounds like a ******** card hitting the spokes of a bicycle wheel. Not sure if this is normal or not for these engine's. Here is a link to YouTube of the engine...
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    1996 100hp Mariner screech's when shifting (not clunking)

    Hello I bought a 100hp Mariner that wasn't run for 3 years, I was able to get it up and running with minimal effort. But I am finding every time I shift I hear a screeching sound and stops when shifted in Forward and Reverse. Besides the screeching sound it shifts nicely without clunking or...
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    DF25 to a DF30?

    Hi all, I have heard from several people that a 2003 DF25 is basically the same as a DF30 except that the control box (CDU) and jets would have to be switched. How true is this and am I missing anything else? Suzuki 4 stroke 3 cyl DF25 (2003) Best, Dan
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    Convert DF25 to DF30

    Hi all, How involved is it to convert a 2003 DF25 to a DF30? Do I need to buy a new CDI unit, carbs, and cam? Or is it as simple as buying new Jets? Regards, Dan
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    Removal of flywheel?

    Hi all Does anyone know if the flywheel will need to be removed in order to replace head gasket and oil pan gasket. According to the diagram it doesn't look like I have to. 2003 , DF25
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    Replacing Head Gasket on DF25 2003 suzuki

    Hi all It looks like I may have some water intrusion in my crankcase oil. I have read that the most likely culprit is a blown head gasket in which would explain the rough idle. I have a service manual but it does not explain how to simply remove the head gasket without ripping apart the power...
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    Milky oil diagnosis

    Hi all trying to figure out if I have a leaking head gasket or if I'm collecting moisture via combustion. I have a 2002 25hp 3 cylinder four-stroke outboard. When I bought the motor the oil was black, I replaced the oil and filter 4 months ago and used the boat maybe 12 times since then...
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    Bearing Carrier installation

    Hi all Just finished up putting new oil seals on my prop shaft and a few other things. I'm installing the prop shaft and housing back into the lower unit and want to make sure that I don't damage the front/reverse and pinion gear's. I tested the forward and reverse gears by spinning the prop...
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    Where can I find a trim tilt motor for a DF25?

    Hi all I have a 2006 DF25 with a gas cylinder for a trim assembly. But really I would like a powered trim tilt motor because the engine is heavier than me. Does anyone know where I can purchase a used one? I don't have $1700 to drop on a brand new one! Dan
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    Matching Engine block ID with ID on stern bracket

    Hi all, I have a 1969 Johnson 55Hp with the ID number 55ESL69A on the bracket. The aluminum plug on the engine has stamped J3005422, can someone please verify that this engine block matches the ID on the bracket! Thanks, Dan
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    Replacing harness plug on a 1969 Johnson outboard with a terminal block

    Hi all, Looking to replace the warn out plug with a terminal block is there a special way of setting this up or is it as simple as marrying up the respected terminal ends on the block. Also what kind of strip or block do you recommend using. Thanks, Dan
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    1969 Johnson 55ESL69A vacuum switch location

    Hi Trying to find the vacuum switch on this engine but can only locate the thermo switch. Should I be seeing wires from the vacuum switch from somewhere visible? Dan
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    Trouble reinstalling lower unit on my 1969 55hp Johnson hydroelectric outboard

    Hey everyone, I just changed out my impeller and greased up my lower unit. I'm putting it back together but having a hell of a time getting the shift control wiring harness back through the upper unit. It feels like it is getting stuck in a bend somewhere near the exhaust cover? Any help would...
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    NS40C loss of acceleration at WOT

    Hi all, I just recently replaced my clutch dog and found it help with gaining back acceleration (engine Rev's but with no acceleration). Know my boat moves at about half throttle before the engine Rev's without any forward thrust. I'm leaning towards a crankshaft bearing issue by the sound of...
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