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    150 xr4 carburator emulsion tube

    Hey everyone, began rebuilding the carbs this week, and the first rebuild went off without a hitch. The boat had sat for 4 years, ran it on muffs last year breifly.....began bringing back to life......anyway, all carbs were badly clogged and hunked up. Carb no two, when i separated the bowl...
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    mercury xr4 carb question

    Pretty simple question for all of yall. Just started to rebuild the carbs on mine. Had a no start problem now, when it ran 8 months ago. Is there any reason why all 3 carbs would not have the jet bowl vent screw in place?
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    12/24 motorguide wiring

    Hey all, this is my situation. ...i have a motorguide 12/24 55pnd thrust. It is three wire, but at the back of the boat where i hook up my two batteries, i have a black and red going to a 40 amp breaker and another set of black and red wires going to another 40 brkr. Ive read the how tos and...
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    1990 xr4 question

    Hey everyone, i have a 1990 merc xr4, that has suddenly decided not to start . When i removed the cover plate on the carbs and manually turned the throttle lever only the upper two left nozzles sprayed out any fuel into the butterfly. Is this normal? The last time it was cranked and ran on...
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    relay clicking under dash

    Hey yall, i know that i have a livewell timer problem, but on my 1990 astro fsx, there is a relay under the dash that is "clicking" when the master power switch is on. Combine that with no switches working on the starboard side of the dash. Are they related in any way?
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    1990 xr4 low spark?

    Hey yall, last summer had the motor running and on muffs.......tried to start it today and all it would do is turn over. New plugs were put in, ngk, and when i did a basic spark test against the block, it seemed vey small. Need this thing to run, upcoming tourny! Yalls help is greatly appreciated
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    fuel filter and bulb

    When i pump the bulb on my xr4, it firms up, but while pumping it and watching the fuel filter, the filter isis not filling completely up. Is that normal?
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    1990 astro fsx circuit breakers

    Hey yall, I have a 1990 astro that has five holes for push button circuit breakers by the drivers seat. They are labeled livewell starboard, livewell port, lights, bilge, and anchor. Can anyone tell me what size breakers went with each? There is nothing on them , the paper stamp on the back has...
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    1990 XR4 will not stay running

    Hey yall, recently purchased this boat and have been putting alot of work into vetting it ready. Recently, i put in a new waterpump kit and ran it with muffs for a good 30 mins.........made sure temp was good, tale tale was good etc. motor idled great and throttle response was immediate. Went...
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    1990 Astro 18

    Anyone know what kinda speed I can expect to achieve with a merc blackmax xr4?
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    can you manually raise a 1990 merc 150 xr4

    Hello everyone, new to the forum and am in a bind with a new boat purchase where the boat has been sitting for years. got the boat fired and running, but after replacing the selenoids (only got a clicking with the old and same with the new).....still have no movement or motor noise. I have to...
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