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    2002 25 4stroke timing marks/setting HELP

    I'm wondering if my motor jumped time, When the mark on the back pulley is lined up with the arrow, the flywheel TDC mark is off by about two teeth on the back pulley. Where should all of those marks/numbers line up?
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    2002 F115 (200 hours) Making oil (STUCK OPEN THERMOSTAT?)

    Well at the 200 hour mark I decided to check out a few things getting ready for summer activities, so I check the oil and yep it's VERY HIGH! first time I'v had this issue in the 12 or so years I've had the boat. So I pull the thermostat and sure enough STUCK OPEN. Is it everyone's...
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    F115 Spark Plugs Iridium or not? Does it matter?

    I'm about to do a 200 hour service and plan to change the plugs. Can anyone recommend a spark plug and or give reason to use iridium versus standard that it came with? I believe the OEM was a NGK LFR6A11
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    2002 Yamaha 115 4 stroke Slight amount of surging at idle

    Noticed recently that my motor is surging slightly when idling. Runs fine otherwise and when I bump up the idle with the throttle it goes away for a moment. Wondering if this is an indication of something that could get worse and what should be suspected and or looked at. Motor has slightly...
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    Charging Trolling motor batteries

    I have a 24 volt trolling motor and the two batteries have a jumper from positive to negative. Does this jumper need to be disconnected to charge each battery? I know about 2 and 3 bank chargers but I just have a simple 12 volt charger that I use.
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    Need Tire help/advice wearing out the outside treads of the tires!!

    Situation: BayStealth 1888 CC Bayboat Yamaha 115 4 stroke Single Axle galv. trailer Approximate Tow Weight...3500 +/- lbs. Tire size 205/75 R 14 bias ply ---- I'm pushing the max load on these I think! I run them at the max air pressure (50 psi) and I am still wearing the outside tread down...
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    2002 Yamaha 25hp 4 stroke getting hot on the muffs.

    Sucked up a bunch of mud last winter and it went into limp mode for the first time ever (I assume it got hot) shut it off and restarted it and it ran fine. I ran it in the yard today, had it at a high idle for a while and notice it sounded funny after while, tried to rev it up and it would...
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    Transducer's inside dripped out, almost like it melted????

    I have an older Humminbird DX and the dadgum transducer's guts oozed out all over the garage floor. What is up with that??
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    2002 Yamaha 25hp 4 Stroke LIMP MODE?????

    Does this motor have a protection or limp mode, like if it gets hot or low of oil? I ran across a mud flat the other day and got stuck, when I looked back the motor was not pumping water and I shut it off and raised it up to get it out of the mud. I had been on it pretty hard trying to get...
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    Where can I buy Center Console Trim Parts???

    I would like to replace the trim around my gas filler, anybody know where to look?
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    Yamaha F25 Carburetor Assistance Please

    Okay, So after changing plugs, two carburetor dis-assemblies with cleanings, one with aerosol carb cleaner and the second in a good soaking in Berryman Chem Dip. I am fairly confident it's clean. Motor starts fine idles fine and and runs up fine :)...... unless you really slam it wide open...
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    02' 25 HP 4 stroke Yamaha (Water in gas jacked up my carburetor!) HELP PLEASE.

    Okay I passed some bad gas through my motor and after flushing the fuels system it still won't run right. This has happened before (a few years ago) and a removal and cleaning of carb by a local shop fixed the problem. So now that it has happened again I'm wondering if can I do this myself? I...
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    Michigan Match? Anybody have an opinion on them?

    Anybody ever try a Michigan Match SS prop. I'm looking at a 13.25 x 17 for $170.00 thats pretty cheap and I'm only going to use it for a secondary prop for running when I'm loaded heavy. I'm currently running a 13 x 19 and with a light load it's just about right just a little sluggish on the...
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    need help with new prop selection

    2002 Baystealth 1880 rolled gunwale 2002 Yamaha F115 Current stock prop 13" x 19 pitch With a light to medium load the boat will get up, albeit sluggishly and will run at WOT around 5800-6000. with a top speed of between 35 and 40 mph. Thats great for 2 people or me and the wife and small...
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    oil leaking from water intake??

    What would be the likely cause of a small amount of oil leaking out the water intake on a lower unit. This is a 2007 50 hp 2 stroke yamaha. Thanks!!
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    2002 Yamaha 25hp 4 stroke water pump replacement

    Any major issues doing this that anyone has experienced? I'm gonna tackle it tomorrow. Got 8 years outta the first one but it acts like it has prostate problems now i.e "weak stream"
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    ADVICE Please! pitch vs diameter

    19 ft baystealth 115 yamaha 4 stroke 13" 3 blade 19 pitch works perfect with a light load:D BUT When I REALLY load it down it is a DOG:( could this be solved with a same diameter prop with a 17 pitch :confused: or a smaller diameter prop and the same pitch?:confused:
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    Source for used Yamaha F115 cowling

    My F115 cowling has been dropped and smashed a few times and now it needs to be replaced. Anybody got a good source for a used cowling for a Yamah F115? Thanks P
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    Yamaha F115 starting problems

    Second time this has happened. Running along and quickly slow down and shut the motor off. Try to start it and it cranks but will not start? try about 10 times wit a few minutes then it fires right up and can be shut off and restarted. Any link between quick shutdown followed by startup...
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    Deciding on a trailer, can you help?

    I am trying to decide between two magic tilt trailers for my 15ft boat. Trailer #1. narrow milled channel, leaf springs Trailer #2 Rectangular box tubing with torsion axles. Everything else is the same, 1,700 lbs axel hot dipped galvanized, 13' tires
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