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    uh ohh changing my lower unit oil

    1991 70 HP and once the lower unit was full, I closed the top vent and still pumped oil into the system from the bottom. i may have put too much pressure because oil came leaking out my water intake :-( did i blow a seal or someting
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    Which carb is causing the problem?

    I have a 1991 Yamaha 70hp and I recently rebuild all 3 carbs as a first time for me. Well being a first timer, it wasnt the best of things. I have gas coming through the exhaust and into the ocean . Plus I have hesitation to top it off. I guess you live and you learn. Is there a way to...
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    any tools for sanding the bottom?

    My dad has a 33' searay and I have a 15' whaler and year after year we sand the bottom using our hands. This is long, messy job that takes us hours and hours. By the end of the day we cant lift the sandpaper off the ground Are there any tools that can do as good as a job as hand sanding...
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    Solid axle vs. Hollow Axle w/ drain holes

    I need to replace my 61" inch wide axle for my Noreaster trailer that holds my 15' Boston Whaler boat. The parts guy told me a hollow axle is better because it can drain the water through the drain holes. He also said if the solid axle is bent or warped it can cause trailing problem but he...
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    gas coming from exhaust

    I have a 91 Yamaha 70 HP and gas is all around the outboard when I start up. What could cause gas to come out the exhaust like this into ocean?? I have other issues like stalling at low RPMS, 4-5 second hesitation during acceleration and hard starting.
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    iboats.com steering nut - kinda dumb question

    I bought the steering nut to keep the steering tube greased on a 1991 70 Yamaha HP. I want to make sure its installed on the correct side of the motor. Does it go on the left side of the motor where the steering rod moves in and out ? Or on the right side, where the cable comes in?
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    Cleaning Steering Tube

    I have a 91 Yamaha 70hp and looking for a tool that can clean the inside of the steering tube. I have heard people using shotgun brushes but that sounds very abrasive to me. I was looking for something that is long enough to sand the inside of the tube.
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    iBoats QuickSilver Hi Perf Gear Lube

    My local Yamaha dealer suggested when I change my lower unit oil on my 1991 Yamaha 70HP that I use Quicksilver High Performance Gear Lube http://www.iboats.com/mall/index.cgi?session_id=029494395&cart_id=481540865&category_id=217317&list_time=1162757648&view_id=20381. That is all that the...
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    Adj Float using Tang

    On a 1991 Yamaha 70HP with a 3 cylinder engine, I do not understand how to adjust the float :( I have inverted the carb and the float opens beyond manufacturer specifcations. I need to shorten the distance between the float and base. The carb is setup like this: The float pivots off a hinge...
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    Big Roller causes Gas Leak

    On a 1991 Yamaha 70 HP, I went over a huge roller and when I came back down the motor was leaking gas from the middle carburetor. It leaks about a 1 gallon of gas a minute. I cleaned all the carbs myself (my first time) 2 months prior and the boat ran fine until I hit the roller wave. Any...
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    Steering Cable Advice

    I have a 1991 Yamaha 70HP with a motor that wont turn with the wheel or manually. I have discovered the cable is frozen inside the tilt tube. Is the only way to get it out is bang it with a hammer? What do you think I should do to prevent this from happening again (Anti-Seize, grease, sand...
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    Soaking Carb Help (with Picture)

    Newbie here at taking apart carb. 1991 Yahm 70HP. Do I soak this whole carb, rubber and all? Or do I need to take it apart more?
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    Cleaning out Carb 70hp

    I have 91 70HP Yamaha and having carb issues since ethanol. How hard a job is it to remove the carbs and thoroughly clean them? I have a service manual that doesnt give step-by-step instructions. I am handy with cars but never dealt with this. My local dealer wants to clean the carbs for...
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    Little smoke when fogging

    I was fogging my 1991 Yamaha 70HP engine and very little smoke came out the exhaust. The engine did stall after 5 seconds of fogging, but again very little smoke came out. Is that bad :eek: ?
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    40hp Envin bucks at High Speed

    On a 1990 Envirude 40hp, when the engine is at high speed it will buck. The engine will run at high speed for about 10 seconds then the engine will decrease in RPM and eventually stall by itself. It feels like it is some sort of fuel pressure problem but don't know where to begin? I want to...
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