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    Battery replacement?

    Batteries normally last 5-6 years, in my experience. I would think you will want two 27 series starting/deep cycle combo batteries, or maybe one deep cycle battery and one starting battery. What do you have now?
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    Impeller kit for Merc 1992 135hp blackmax

    The impeller, wearplate and several gasket kits fit many models. You can usually just grab a mercury V6 kit from a dealer or marine store and it will fit. What does crowleymarine say?
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    Stuck lower unit

    Seized spline can and does happen. See if the shift rod is willing to separate, as that can contribute. People use wooden wedges to help it separate. I would expect hanging it upside down 1 inch off the floor and spraying the driveshaft with penetrating oil would help. After it separates...
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    Mercury M-800 Thunderbolt Full Throttle Only Now Help

    Assuming the carbs are clean, it sounds like you need to do a link and synch. Remove all spark plugs and the prop and stick a ruler into the top spark plug hole and read the distance to the top of the piston at it's minimum (TDC). A dial indicator is best, a caliper is second best and a steel...
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    What are the essential tools to keep on board?

    An additional prop is a good idea, if you can change it. Some larger boats make that real hard. What do you mean by "Prop serviced"? Does some shop actually do something other than grease the prop shaft and spray paint the blades?
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    1973 Mercury 500 control box (key ignition, choke, shift-interrupter, tach connector) wiring questions

    Yu can use a push to choke ign switch. Just connect the grey wire to the choke terminal. The original ign switch needed to provide ign power to one side of the choke button. A push to choke has that wired internally. The orange or salmon wire is the usual ign killer wire. Not sure why it...
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    Bolts ?

    I have had luck with a mapp gas torch. If you heat the bolt and apply a penetrant and let it cool, it can pull the lubricant into the threads. You usually need to repeat the hot-lube-cool cycle several times.
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    Removing Cylinder Head 1960 18hp Lightwin.

    I had an IL6 Merc powerhead sitting upright on it's mounting studs, in the garage, and one cylinder's piston rings rusted to the cast iron liner. I was able to free it easily, with a brass drift thru the spark plug hole. That motor was flushed and drained before the powerhead was pulled and...
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    What are the essential tools to keep on board?

    Lou, Are you really going to change the impellor, while on a boating trip? The rest of your list makes sense, although, you likely will not need most of it. I would recommend towing insurance as a 2 hour tow can cost $750 or so. A spare prop and wrench is a real good idea, as the hubs can...
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    1994 60HP won't start

    So starts with starting fluid and then dies? Sounds like a clogged carb.
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    Trim issues

    The ATF fluid will also turn pink when water gets into it. Of course the boat needs to be in the water for that to happen.
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    Trim issues

    Alpha 1 PTT units are self bleeding. Just make sure they are full of fluid. Normally a Dextron II ATF is used.
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    Trim issues

    Slow trimming could be a motor issue, solenoid issue or wiring issue. I lean towards a wiring issue. Why not trim the motor up as best as you can. Now switch the motor wires on the solenoid secondary posts. Now push the trim switch to trim it up, and the trim should run down, since the wires...
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    Blower motor popping circuit breaker

    There is no way to tell if there is a short in the circuit, blower or if the circuit breaker is bad. Presumably the blower worked for years with the 5 A circuit breaker. You should either measure the resistance of the circuit and solve for amperage, or replace the circuit breaker, whichever is...
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    Trim issues

    No, if the trim limit switch was disconnected, it would prevent the pump from running. Jumper from the battery to the up solenoid (blue pump wire), primary (small) terminal. If she trims up at normal speed, the issue is in the wiring, or switch on the control. Make sure the black wire from...
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    Trim issues

    That PTT system probably has 1 solenoid for "Up" and another for "Down". Does your trailer button work to trim motor up faster? If so, the trim limit switch on the outdrive is likely bad. If not, for slow trim up, check the wiring from the battery to the "up" trim solenoid. They are wired...
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    Trim issues

    MerCruiser? Alpha 1 Gen I?
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    Hull vents

    It is not a bad idea to ventilate an outboard boat. They do not require powered (blower) ventilation, but passive ventilation will remove any fuel fumes, help the bilge dry out and help keep corrosion down. I had a seacock handle in the bilge rust out on me, and my OB boat has vents. It...
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    Trim issues

    Can you give us a hint on what motor? There are quite a lot of different PTT units on different year Outboards and Sterndrives.
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    Removing Cylinder Head 1960 18hp Lightwin.

    Hold a hammer in your hand, and using a downward motion, smack the bottom of the wooden handle (never the steel head) against the side of the head. The shock should crack it loose.
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