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  1. M

    need help..Im stumped

    I have a '88 fisher marshhawk 2v with '72 johnson 50hp on it with a manual jackplate.Ive been running a 17 pitch sst stainless prop on it and it turns 5400 rpm and 34mph by my speedo.The motor has a operating range of 5000 to 6000rpm.I was wanting to get my rpms up in the upper end closer to...
  2. M

    Need help selecting a prop

    I need help in selecting a prop.Im wanting to just get my rpms up in the upper part of the rpm range and and alittle better performance.Any help would very much be appeciated.Thanks 1988 fisher marsh hawk 2v alum. bass dryweight 453 lbs 10 gal gas 100 lbs of batteries 16ft 4'' long with 69''...
  3. M

    reed gasket on 1972 johnson 50

    I am replacing my reeds on my 72 johnson 50hp.My intake has vacum fitting for my fuel pump but the gasket i recieved doesnt have a hole in it for the fitting,should i cut a hole in the gasket or leave it alone.The gasket i recieved is replacement for the original brp number and it covers some...
  4. M

    Broke vent screw on gas tank

    I broke the vent screw on the gas cap on my plastic fuel tank and was wandering will it affect the flow of fuel to my motor.Thanks
  5. M

    need help with prop size

    I have a 1988 Fisher marsh hawk 2v alum boat that has a dry weight 453lbs,has 1972 johnson 50 hp on back.the plate is setting level with bottom of the transom.Right now it has a sst 13 7/8 x 17p prop on it.I am getting 28mph with speedo and 4200 rpms.I was thinkin about dropping down to huster...
  6. M

    what pulse to set my tach on

    I bought a tach of a friend and he didnt have the instructions for it, was wandering what pulse i need to set it on for a 1972 50 hp johnson 2cyl.It has a 2p4cyl,3p6cyl,4p8cyl,5p,6pulse setting.i would appeciate if someone could help me as i have no clue.Thanks
  7. M

    1972 Johnson 50 hp wont run past 3000 rpm

    Hello folks, i have a 1972 50 hp johnson that im having problems with.It starts very easy idles smooth,in neutral if i raise the throttle slowly it start start missing around 2500rpm and if i increase it up to 3000 it will then the rpms will drop back down to about 2200 and has a big miss in...
  8. M

    '72 Johnson 50hp smoking at start up

    Howdy everone I recently bought a boat that came with a '72 Johnson 50hp #ESL5072c.At start up i get excessive smoke and then it goes right away.It was smokin when i got itso i checked my compression and both cyl. was 125 each.Then i took the carbs off and soaked them ran some strands of wire...
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