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  1. W

    Will Carb change give me 5 hp out of my 4?

    I've got a mid 90's Tohatsu built Mariner 4hp outboard that has seen little use but struggles to get my 13' tin pond boat up on plane.. I've found a carb from a cannibalized 5 hp Nissan (also Tohatsu) of similar vintage for cheap $. As I recall, olny the carb is needed to ekk out a bit more...
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    Second Fishfinder needs second xducer?

    So I have a Humminbird 767 FF mounted on the back of my 07',16' Mirrocraft Outfitter aluminum boat. It's fed by a external GPS antenna and transom mount duel beam transducer. I'd like to add another humminbird brand FF up in the bow (no model selected yet) for those times I fish with a friend...
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    Blown cyl on o3' 6hp Tohatsu. Fixable?

    I've come into a 03' 4 stroke 6hp Tohatsu with a snapped connecting rod and hole in the cyl assembly . ( Right by oil filler cap where end of rod hit it.) The motor is in awsome shape, other than this major fault. Camshaft turns freely and doesn't seem to be gauled/damaged from the rod failure...
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    99 15 merc, isolated rough spot?

    My buddy just bought a 99' 15 merc 2 stroke ( I owned one myself for 13 years and consider this design to be one of the best small engines out there. That shift in throttle feature is awsome!) Anyway, the motor starts great and runs super accross the entire RPM range EXCEPT in one small spot...
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    90's 2 stroke upgrade from 4 to 5hp?

    A search here has left me cold with 2 stroke conversion info so I'll ask the experts. Just found another nice Tohatsu (with Mariner label) 4hp to keep my 5hp Tohatsu company. I also have a spare carb from another 5hp Tohatsu. I'm thinking a simple carb swap on the 4hp will boost it to 5hp but...
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    Weight specs for 2 stroke Tohatsu 8 and 10?

    I love my 4&5 hp tohatsu's enough where I'm thinking about hunting down a 8 or 9.9 hp for the stable. Can anyone tell me the spec weight for either of these motors in a short shaft?
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    Specs help for 84' Mariner/Merc 4hp 2 stroke?

    Hey gents, Anybody have/source for weight/feature specs of the subject motor? Were these motors built by Tohatsu like the (Nissans and Mercs of the 90's)? I have the opertunity to grab one that "won't start" for very cheap $. From the description of the owner it sounds like typical gummed up...
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    Red adjustment knob on 2-4 hp?

    Ok, I'm having a complete memory lapse here. There is a red plastic, spring loaded adjustment knob on the right (tiller) side of these small outboards. Turning it at most RPM's doesn't seem to effect performance at all. I'm thinking this is a spark advance adjustment but can't recall ( and both...
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    Relocation of shifter on small outboard

    Most older/2 stroke tiller steer "portable" outboards were designed to have their gear shift on the starboard side about 1/2 way back. This is a fine setup IF your running controls but if you tiller steer, your always reaching back and fumbling for that small lever. This PITA design feature...
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    Getting trailer depth just right!

    Anybody trailering a boat knows that their rig launch's and hauls best with the water at a certain depth as compared to their boat/bunks/rollers. Put the trailer too deep and it floats on crooked and /or push?s off hard/slow. Too shallow and it may bottom out on launch or come on hard/slow...
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    M5B- driveshaft won't seat

    Ok, stuck the new Wp impeller in so I could use the boat this week while on vacation. ( The old one had two of six vanes left! I'll order a complete kit and do it right in a few weeks before my ME trip. ) Everything was going GREAT and quickly until I went to reinstall the lower leg. Put the...
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    tricks to Wpump rebilid of M5B?

    Seems to me I've seen something here in the past on the difficulties in replacing the impeller on a Tohatsu/Nissan 5 hp 2 stroke. ( but can't find anything now that I need it. ) My motor ( 92' vintage) is not spitting watter out the tell tail when it's idling or wide open. Seems to pump OK at...
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    problem with tiny tach on 30 Nissan 4stroke

    Purchased a tiny Tach commercial unit to help with some prop selection. Instructions that came with it are lame. I got it intalled and now it seams that any of the 3 ( 180, 360, 720deg) available settigsg give me questionable readings. Got it set to 360 ( which seemed to give me the closest to...
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    Help with older Yamaha 5hp

    Hi, new to this particular forum but not to Iboats or outboards. A friend just recieved a Yamaha 5Cs with Id plate markings of a small N, then 6E3 and finally S133880 (which I'm guessing is the serial #.) He seems to feel that the motor is a 1984. Anyway, the motor looks OK and was...
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    New tires leaking- Tube them?

    Bought a new leftover BM&T package last year with 5.30x12' galvanized rims. Tires are new with no dry rot or anything but I've been plagued by a slow leak in one and a a slower leak in the other. Boating time is short enough without havign to drag out the compressor with every trip. I was...
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    Tiller outboard shift extension

    So before I go reinventing the wheel..... I have several small 4-6 hp outboards that I frequently use on small Jon's or square stern canoes. Often the front of the motor is 2-3' behind me and the boat too narrow to move freely. Operating the tiller is no problem but I'd like to buy/make some...
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    Part# for Merc tach for 3 cyl 4 stroke

    I'm looking for the factory part # for the tachometers that are used on the 2005+ 25 and 30 hp 4 stroke motors? Can anybody help me out? I know I can order a tiny Tach Commercial but was interested in one matched to this motor. ( Hoping it has a replaceable battery too.)
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    Winterizing bilge pumps?

    Running my first ever freshwater boat that has both a bilge pulp and live well system. I'm wondering if they pump dry or if I should be thinking about running some antifreeze through them before parking it (outside)for the winter. What do you other northerners do?
  19. W

    Which TinyTach for 3 cyl 4 stroke?

    Getting ready to reprop and figure an hour meter would be handy anyway. Went to teh TT website and I'm not seeign anything clearly. Any help appreciated. Dave
  20. W

    Factory PSi on 90's 8 hp?

    Anybody know the factory spec on cyl compression on a 99' nissan 2 stroke 8hp.? Seeing 105 and 115 on a buddies, and don't know what I should be seeing. The difference makes me suspect a leak/crack ( and the motor does run rough when it warms.) Thoughts welcome.
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