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  1. K

    60 hp ecm on 50 hp 4T efi

    Hello i found information in italy where they bought mercury 40 hp 4t (40 = freetaxe in italy) efi and upgrade them to 60 EFI. The mod consist to change the ecm by the 60(600$) efi mod or some seller remap 50 ecm (250$) and remove an air restrictor in the air intake...
  2. K

    60 cv efi ecm on 50 cv 4T efi ?

    hello 50 cv and 60 cv mercury 4T EFI have the same powerhead except ecm ? Is it possible to find this 10 extra hp? Could you put aftermarket ECM or other electronic system to increase the horsepower ? thanks
  3. K

    40 hp / 2cyl / 1 carb run rough at idle ?

    hello My motor mercury 2001/ 40 cv / 2cyl / 1 carburator walbro doesnt like to be under 1000 rpm in forward speed under this the motor sounds a bit rough. I ve never solve this i check en re check timing(8 degrés at idle) , try different settings for the idle mixture screw nothing to do the...
  4. K

    mercury 40 HP / 2T no start after run without petrol

    Hello my mercury 40 CV 2T / 1 carburator is capricious ! Last time i use my boat the fuel line disconect from the fuel tank, so the motor loose rpm and then stall. I found the prob reconect the fule line , pump to put petrol in the carb, i check that essence is in the carb by opening purge...
  5. K

    french mercury 40 hp tutorial for timing an synchro

    hello<br /><br />i make a tutorial to adjust timing / synchro / carb for the mercury 40 HP 2 cyl / 1 carb<br /><br /> http://www.pneuboat.com/dossier_pratique/reglage_40cv/reglage_40cv_mercury.pdf <br />only french !
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