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    Convertible Top

    The proper term for that cover is "Navy Top". My '88 SeaRay 18 footer had one. To stow it, one would unsnap it from the windshield, and flip it back. The top cushion along the transom would flip up and the top would fit under it, concealing al but the pipe supports which ran along the gunwales.
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    1979 1150 thunderbolt merc drive shaft

    What size boat and what prop pitch are you using?
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    1988 Mercury 115 inline six fuel issue

    it is likely the carbs are set too lean to allow acceleration. Open the top carb 1/8 turn and try to accelerate. Follow with mid carb and then bottom carb, testing acceleration after each adjustment. Repeat entire sequence as necessary.
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    Missing?

    Shows as an '86 135HPV6. Likely it does not have adjustable idle jets. You will need to make sure the idle passages are real clean. As a matter of fact, make sure the carbs are completely clean and the floats are set properly.
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    Tilt/Trim Goes Up, But Not Down

    The wires on the trim/tilt push button in the throttle handle usually have a splice in them near the handle, but often behind the panel or in the control box (whichever you have). I would recommend you find this splice and clean it. You can also check the switch action with an ohmmeter...
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    LF 1986 90 HP Mercury L6 Owners Manual

    A service manual should discuss this as well....
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    LF 1986 90 HP Mercury L6 Owners Manual

    Brown is usually overheat alarm. You should see a temp sensor on the cylinder head. Maybe it is malfunctioning.
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    Missing?

    I do not see a parts listing for a 1987 mercury 135HP motor. In 1987 there was a 150HPV6 and a 115HP IL6. So what do you have?
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    1999 Ocean Pro 225 stuck in neutral

    See if she will shift by hand. Prop must be turned to allow this. If not suspect the shift rod is corroded to the cover it passes thru. Replacement is pretty simple. When you drop the gearcase to change the waterpump, you will see the cover and shift rod. Shift rod height must be set exactly...
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    Fish finder wiring questions

    8gauge wire is much heavier than you would need for a FF. You can use it however. it is more appropriate to use it to power all accessories, current and future. However, I like to wire in a master accessory switch at the helm, so I can turn all accessories off with one flip. Saved me from a...
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    RPM gauge not hooked up

    The brown wire is likely for an overheat alarm. Make sure you have +12VD on the purple wire, ign on, and -12VDC on the black wire. A voltmeter or test light can confirm. Check the grey wire at the motor. it should be connected to one of the yellow stator wires, that come from under the...
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    1979 1150 thunderbolt merc drive shaft

    An 850 likely has a 2.3::1 gear ratio. Your IL6 gearcase is likely 2::1. So, you may need a new prop pitch to restore top speed. Make sure to install the plastic piece in the midsection, so it will hold the upper shift shaft in a good place to line up with the lower shift shaft. use needle...
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    Stalling 90 hp mercury outboard

    Rebuild the fuel pump. That clear fuel line should show bubbles if you have an air leak. Obviously you do not want an air leak.
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    '87 80hp Mercury won't idle

    I have never looked for those. You could permanently connect the fuel line to the motor using a brass double hose barb in 5/16" ID from a hardware store, plus a couple of hose clamps or wire ties. I also would expect the fittings to be available aftermarket, but not sure where..
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    LF 1986 90 HP Mercury L6 Owners Manual

    Gee, what new stuff are you expecting an owners manual to have in it, that a service manual doesn't. I had an owners manual for a '77 IL6. I cannot think of anytime I consulted it, after I got a service manual.
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    After market carb kits

    Sierra, GLM and others make quality aftermarket carb kits. These are available from many places on the web
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    Trigger help

    Force motor? If so, you might repost in the Mercury/Force forum.
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    Portside hard to steer underload

    The right handed prop on your motor wants to "walk" to the right side of the boat. This causes it to pull to starboard. Loosen the bolt holding the zinc anode and rotate the fin on the anode full CCW, and tighten it. Expect the torque to be different at different trim settings. You can only...
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    RPM gauge not hooked up

    A modern tach needs +12VDC, ground and a signal wire. Look for a cluster of purple, black and grey wires. Purple is +12VDC, black is ground and grey is signal.
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    Prop caught on trap, engine wont turn over

    If the driveshaft spines have been stripped, the crankshaft would likely turn. I think either the prop shaft is bent enough to jam the gears or the bearings broke in the gearcase, or the driveshaft is bent enough to jam the crankshaft.
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