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  1. spacerust

    19 pitch prop 24mph what do i need to increase?

    i have an 18' flats boat with a 90hp johnson. the prop i have on it is a 19 pitch and i clocked it a 24mph at WOT the other day. i don't have a tach installed yet but was wondering if i bought a lower pitch (possibly 15 pitch) would it increase to recommended rpms. i used to have a mercury 150...
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    can i test under load while on trailer?

    i have been working on the motor lately but i want to test her under load. is it safe to back her into the water still locked to the trailer and test her under load that way? would raising the rpms in this situation hurt anything? just wondering cuz i'm afraid of taking her for a test run and...
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    could a loose carbuerator cause this?

    okay i have a 73 johnson and recently had someone clean the carbs. i took it out and it was fine leaving the dock. when i got out to do some fishing and decided to move to another spot i turned her on and idled fine. when i put the idle down she died. took me awhile to get her going but what...
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    how many pitots should i have?

    ok, i'm hooking up a tach and speedo to my 1973 135 johnson. i had one pitot there for my tach on my previous motor. my speedo didn't work before. my question is when i hook up the tach and the speedo do i need to have two separate pitots? or how do i hook it up to get the results i need?
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    how to hook up a tach to johnson motor

    ok, so i just recently switched motors on my boat. i had a merc now i have johnson. the guy gave me a tach to put on but i had one on before. what do i need to do to get it going for the new motor. when i took her in the water the old tach wasn't working. but i don't recall unhooking anything...
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    how do you do a link and sync?

    i have a 73 johnson 135 that just had the carbs cleaned out. compression on all cylinders are 125. how do i do the link and sync? what about the idle fuel adjustment? thanks.
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    i need power trim and tilt motor

    does anyone know where i can find a power and tilt trim motor for a 1973 135 hp johnson? when i got the motor a while back the guy said it didn't work. told him that it was fine i never used it since i have a power lift. i took it off and gave it to him. now i need it and everywhere i look it's...
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    dies when placed in gear

    i have a 73 evinrude that just had the carbs cleaned. starts great, idles fine , but when i shift it into gear...sadly it just dies. i was out on the water today and stopped to fish for awhile. then this happened. i was out there about 15 minutes messing with it, trying to get it to go. finally...
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    what's this sound when i turn the key?

    ok, i just swapped motors on my boat. i put a 90 hp evinrude and when i tried it out on the guy's boat everything went fine. i checked all the controls, forward and reverse, and etc. now i hooked it up to mine, installed the controls (it was set for a southpaw and i switched it) and hooked...
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    repowering option for 18' flats boat

    my motor is just about gone. i have a mercury 150 on my 18' flats boat. i was looking to get another motor for it but would like something lighter. i saw an 88 yamaha with good compression and overall good condition. the owner said it has the usual yamaha cracks on side. Is this something that...
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    1989 Johnson GT 150 lost compression

    There is a guy selling a really nice boat cheap but the motor lost compression in one piston. Is it worth buying?
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    power and tilt repair

    i have a 1976 mercury 150 with thunderbolt ignition and as long as i have had it the power and tilt has never worked. i have two trim controls. the jack plate works but when i try to tilt, all i hear is just a click. don't really know where to start but if given direction i am mechanicallly...
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    no reverse

    i have a 1976 mercury 150 with thunderbolt ignition. reverse doesn't work. not sure where to start. could anyone give me a rundown of things to check? i don't know where to start but am mechanically inclined just not familiar with outboards yet. thanks in advance
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    bogging when taking off

    i have a '18 skooter with 150 hp mercury 2 stroke. it seems like when i am about to take off in about 2 feet of water if i give some gas it bogs down and turns off. but when i'm in deep enough water 2 and half or more i can take off in a jump. not sure if i need to adjust the throttle. if...
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    cranking amps for 150 hp

    the battery i have for starting my motor is 625 cold cranking amps. recently i read somewhere that for a 150 motor it should be around 1000 cranking amps. is this correct? Is there a general rule of thumb?
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    non skid paint on bare fiberglass deck

    carpet was pulled from the deck leaving just the fiberglass underneath. looking to paint it and was thinking non-skid. i've looked and the marine paint seems to run pretty expensive (50 to 75 a gal). went to home depot and saw some outside paint that is used on pool decks, tennis courts, and...
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    heavy hand throttle

    i have a flats boat and i have been in about a foot to foot and a half of water. i have the jack plate up to where i can take off but since i am fairly new to owning a boat i usually take off slowly and i can see the water getting all muddy since i am stirring things up. just wondering if i can...
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    gauges help

    i just recently got a flats boat and she has gauges on her. water, speed, tach, voltage. i don't think they are accurate. the water pressure is always around 2 to 4 psi, the mpg doens't move and the tach is at around 2000rpm when off. can i reset the tach to zero and go from there? if so, how...
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    battery voltage

    i have a 12v battery installed. when i try to crank her up the voltage drops down to about 9 or 10v. Is this right? or do i need a new battery? would this effect and cause a hard start?
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    proper jack plate usage

    i have a '18 flats boat with a 150 HP outboard. What is the proper usage for a jack plate. my other boat i had a tilt/trim and i would always trim down to take off. with this jack plate can i leave it in the same position all the time? if i am in shallow water can i run and take off the same...
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