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I have a 1984 120HP Merc, alpha I outdrive. I heard a metallic clattering in the back where the water exhausts out one of the small holes on the side of the outdrive. Looking in, I see a small, thin stainless steel part about 1" wide. I think its the flapper that keeps water out of the exhaust...
Have a 1984 alpha I. Dropped lower unit to change impeller. Trying to re-attach, but drive shaft spline needs to rotate a bit. I turn the shift shaft, but no matter where it is turned, the drive shaft won't rotate. Prop turns freely, as if in neutral. I thought I should be able to turn the drive...
I have the famous bog and want to get rid of it. I can have it rebuilt for about $150 or get a new one for about $325. Cost to rebuild and evaluate/get boat running great is about $280. <br /><br />I heard this carb is a bad design and that even a new one might not fix the problem. Any advice...
How do you manually lower the outdrive if the hydraulics fails? I see a knob on the pump, but turning it doesn't seem to do anything. Have a 120hp mercuiser.<br /><br />Thanks.
My boat has a main switch to disconnect the battery, and it switches the ground, not the 12V. Is this correct? Seems like it should switch power or there is power to the whole boat except for the last 12" of ground at the battery.
I have the infamous bog with my current carb on a merc 120, and am wondering if the carb on the 170 or 470 would fit since it doesn't seem to have the problem and looks almost identical. My rebuild instructions list the carb numbers as 1389-8490A for my 120, and 1389-8489A for the 470 (or 170...
Have a 1984 120 Merc. When I rotate the rotor and let it snap back (to check the spark advance mechanism under the distributor) it snaps only most of the way back. It seems to not completely return to the original position. Is this OK? Engine has a surge at WOT only.
Have a 1984 Merc 120 with Mercarb. Just rebuilt carb and came to the adjustment of accel pump. The kit instructions say to measure from the top of the air horn to the top of the pump rod, but the Merc manual says to measure from the spark arrestor mounting surface to the pump rod. Both say the...
I have a 1984 Model I outdrive. There is a slow oil leak from a hole on the starboard side of the lower unit. The hole is open, and is locted on the bottom of the rounded cylindrical part of the gear housing on the forward end.<br /><br />Any ideas as to what this hole is for and what has...
According to my book, the pre-1987 120HP mercarbs had insufficient accelerator pump capacity and tend to bog out during acceleration. I have this problem. Does anyone with a 120 not have the problem? If so, what carb is on your boat? I want to get one that works!
Have a 1984 120R, Model I outdrive. Trying to get it back on after replacing U-joint. It has only .1" gap from full attachment. Do I tighten the nuts to force it on or is there something not right?<br /><br />Could it be engine alignment? Could it be just the compression of the rubber ring in...
I had to remove the outdrive from the transom/gimball assembly (6 nuts) to check the U-joint. Do I need to replace all the O-rings and gaskets? They seem to be in good condition. <br /><br />This is a Model I outdrive, 1984. I think they were replaced about 3 years ago by former owner.
I have a 1984 IL4 Merc 120HP, model I outdrive 1.98R. After about 2 hours of skiing, I started hearing a loud metallic clankity clank noise from the bell housing area or maybe just inside the transom. It comes and goes, and will disappear when the trim is changed. It doesn't occur at any...
I need to clean out the accelerator punp area of my carb since it has some crud in it. The pump spring is corroded also (probably got water in it). Looks like someone replaced the gaskets and rubber piston not long ago-- can I just clean it all up and re-assemble or is it essential to replace...
I have a 1984 4winns IL4 120HP merc. There is no vacuum advance line going to the distributor, nor do I see a fitting that a line could attach to. Ditto for the 2 barrel merc carb. What gives? Is this normal?<br /><br /> I am trying to figure out why the engine dies when I give it gas-I have to...
What is used to seal around the aluminum tube that drains water from the ski well back to the bilge area? I am replacing the bulkhead, and am planning on using marine grade RTV silicone to fill between the bulkhead wood and tube. Then I'll fiberlass the ski well, including the bulkhead. I will...
Anyone used the spray can foam from Home Depot to fill between stringers? I need to fill a few small areas, (about 1'x1'x6") not the whole boat. I know that stuff is very nasty, but at least it's cheap and easy to find.
I read the posts about using ethylene glycol (anti-freeze) to stop rotting, but what does that do to the ability of epoxy to stick? It seems like there would be a sticky film on the wood. The places I would like to use it do not allow wiping off the film since they are down into wooden areas.<br...
