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    Older Mercruiser wont turn over

    Trying to get an old Mercrusier thats on a House boat to turn over..Its a Model 120 s/n 4648598. Its on a friend of mines boat and has a duel engine set up. The other one runs like a top. Starter selonoid chatters when you put power. All connections are clean and New battery. Pulled the plugs...
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    Older 70"s trailer refurb. Rollers

    Recently aquired my grandfathers 1971 Stuery 15ft Bow rider. Has an 89 Force 50hp on it with very low hours. In good enough shape that I want to restore it and the trailer. Started on the trailer this week and trying to locate replacement keel rollers. There are 3 that are 4-1/2" wide,I have...
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    Strange noise when shutting off motor (470 merc)

    I have an 84, 470 mercruiser. Motor starts and runs great, however when I shut the key off as the motor stops I can hear a clinking noise toward the front of the motor. It does it every time but only as motor stops rotation only. No noise when starting. I haven't pulled the valve cover off yet...
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    Gap setting for plugs on a 3.7 470 Merc

    I need to confirm plug gap setting on my 470. Its an 84 Mercruiser. The Manual spec I have shows 25 to 30 on the plugs and 17 on the points. When I pulled the plugs that were in the boat the plug gap was in the 35 to 40 range. I am figuring the manual spec would be correct but wondering if there...
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    3.7 Motor skipping under load

    I have a 1984 ,470 Mercruiser that Has a stator set up for charging. The motor will idle fine and I can rev the engine and Amp gauge will float between 11 to 13 volts. Under a load after running about 15min at half throttle the enging started to sound irratic, kind of a slight skip but more of a...
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    Building a frame for Bimini top 195 Four Winns

    I have an 84 Four Winns 195 Horizon and have been trying to find a picture of the same boat with a factory Bimini top. I have restored the boat and want to make a top that will match up to original mounting brackets. Does anyone have a picture of this model with the factory top mounted. I have...
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    470 Mercruiser Voltage issue or fuel?

    I have a 3.7 merc 1984 with the stator charging system. After about 30 min at mid throttle yesterday motor started to run rough. Loss of power. If I hit my trim adjustmet the motor would back fire. I could trottle down to lower RPM and cruise but with any load backfire. When putting the motor...
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    Testing gauges /How to?

    I am testing a few gauges on an older boat and was looking for info that I had printed out once before from the site. There was a link that I had gone to http://www.tflx.com/tech.html but it no longer works.<br /><br />I have tried pulling up the site for Teleflex but cannot find a main site...
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    Trim and Trailer button function

    I have a 1985 model 195 Four winns, 470 mercruiser. The throttle control has a trim switch and a trailer button on it. Is there a limit switch or sensor that should interupt when trim is raised to a certian point? Currently if I hold the trim up it raises full upward same as if I use trailer...
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    Can exhaust Gaskets be replaced while in water

    Have a leaking exhaust gasket on a 5.7 V8 merc. Boat is in the water at Marina. Is it possible to change while in the water or best to take out of water. <br /><br />Thanks
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    1985 470 Mercrusier RPMs question

    Took my 19ft 4Winns cuddy out for first test run after restoration. All went well but have a couple questions.I am running a 14 pitch 3 blade prop.At WOT 2200 rpm, speedo reading 38 mph. Not sure accuracy of speedo but was very pleased with performance.Out of the hole and up on plane very well...
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    Tach Question?? Won't zero at pwr up

    Have a 85 470 Mercruiser in a 19ft Four Winns cuddy. Have been restoring boat all summer and now gotten to finalizing a few items. <br /><br />The tach is not working and I believe may just be bad. <br />Before I replace wanted to ask for second opinion.<br /><br /> Symtom is when I switch the...
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    Carb Kit for 85 470 Mercruiser??

    Trying to track a rebuild kit for my carb <br /># 1399-8489. Number is stamped into casting and also tag on top cover. I believe it is a Rochester 2 bbl but cannot find a cross ref kit locally/autoparts store. Any info or cross ref#'s. I looked on Iboats mall as well but cant find a match.<br...
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    fresh water discharge on 470 alpha 1 drive?

    Probably dumb question but want to be sure. Mercruiser 470 with an Alpha 1 out drive. With closed cooling system. When I hook up muffs other than exhaust through prop should I see water flow anywhere else on the out drive. Am used to outboard which had Pee hole and areas near cavitation plate...
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    Replacement decking 1/2" or 3/4" marine ply

    I am tossing my options in decking replacment on a 19ft 1984 four Winns I/O cuddy. New stringers are installed and glassed in ready for decking. Original floor was 1/2' plywood probably just exterior grade. <br />Looking at either using 1/2" marine which was original decking thickness or going...
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    Year of 140 Mercruiser ?

    Picked up an old boat with a 140 mercruiser in it and and trying to identify year of motor and outdrive model. Motor s/n 3990150, cannot find #'s on out drive but looks original. Its either an R model or Alpha 1 from what I can tell without splitting upper and lower units. Thanks in advance
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    Parts compatibility? Mercruiser 140 and 470

    Have a chance to pick up a mid 70's 140 mercruiser with an R drive. Boat is a Caravelle 16ft. 50/50 on worth restoring, Hull is solid but interior shot, floors stringer etc. Motor and drive complete and was a lake boat. I was thinking about scrapping for parts,out drive,carb alternator etc...
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    Best way to apply mat and poly resin on new deck?

    I am close to finalizing new stringer and deck project on a 19ft fourWinns I/O. When I place/fit the new decking (1/2" marine) I plan to overlay with mat and poly resin. I did a smaller boat a few yrs back and just poured resin over mat and spread with a blade worked well but smaller area. Is...
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    EZ-Load Trailer Vin #

    I'm trying to either contact MFG or someone that may be able to offer info on whether Vin # may be stamped into frame some where on a trailer I just bought with a boat.Original Decal is worn and cant be read. Is EZ-Load a model or is there such a MFG?<br />Thanks
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    Compression????

    Doing routine prep for new season I decided to do a compression test more as curiosity than any operational issues. I have a 1991 Johnson Ocean Runner 150hp. All cyl are reading 100psi with the exception of #3 cyl which is running at 50psi. Test was done with motor warmed up. Engine sounds great...
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