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  1. Sea Rider

    Honda BF4?

    Honda manufactures BF 4-5-6 outboards. If all 3 models shares the same CC powerhead and plan upgrading a 4 to a 5 HP the HP restriction could be due to : wider air restrictor, different carb model, next HP ECU ? It's not as simple as to remove the air restrictor and upgrade to next model...
  2. Sea Rider

    1990Yamaha 175 Steering Issue?

    Check if the motor has a protruding bolt on the upper swivel bracket which is used for increasing/decreasing the steering load, if so, remove bolt and spray any penetrating oil directly or aided with the Joint Rejuvenator tool. Check if there's also a grease nipple somewhere around the lower...
  3. Sea Rider

    Tohatsu 50hp M50D2 not starting

    Is that a remote or tiller model ? Happy Boating
  4. Sea Rider

    Frozen needle seats.

    Good to count with an excellent machine shop to do the fine work, not an issue running carbs with many new parts along old noozles, as long are immaculate clean will work spotless. Happy Boating
  5. Sea Rider

    1990Yamaha 175 Steering Issue?

    Yep long tedious hand work, the steering shaft must be greased periodically specilly if the motor works in salt water... Meanwhile deciding if tearing down the steering shaft and the swivel bracket or not squirt an overdose of WD-40 on both swivel bracket's ends to lubricate the internal...
  6. Sea Rider

    Thermostat housing hole.

    Definitedly will smoke but not that heavy as when doing the decarbon process on a 2 stroke 2 cylinder one carb motor in which will need to squirt more product than on single independent carbed motors. The decarbon process should be done at terra firme soon after the motor run healthy at wot at...
  7. Sea Rider

    Thermostat housing hole.

    If the noozles are clean and shinny no need to replace them. Was checking Keihin's web page, lots of carbs for motorcycles. Doesn't show outboards carbs but there's a contact form, check with them. The Yam 40 HP nozzles could be found in other carbs as well, the issue is to know precisely which...
  8. Sea Rider

    Frozen needle seats.

    So the long soak in thinner helped nothing ? Personally wouldn't use heat, carbs are delicate and NLA. Try Freeze Off Spray as suggested or send them back to the machine shop. Plan to replace just the wider one or all 3 ? Happy Boating
  9. Sea Rider

    Thermostat housing hole.

    You said that been using a carbon remover product mixed with fuel since you bough the motor, what about previous owner ?. Those products are only good if constantly used on new out of the box motors. Won't do a thing on motors that have already carboned up, better save money. If wanting to go to...
  10. Sea Rider

    Tohatsu 9.9 d2 ignition timing

    My beloved M18E2 with near 1 K run hours still achieves 118 PSI on both cylinders when tested cold. It's mostly due to run CRC Engine Tuner every 100 worked hours along a full internal crankcase mechanical decarbonization every 300 to 500 run hours depending on use which nobody does and it's...
  11. Sea Rider

    Cylinder Compression Incongruences.-

    Last but not less important. The throttle grip was rotating hard to my particular taste as love counting with very smooth ones. Disassembled the whole steering and throttling handle to pieces which were swimming in a heavy hardened grease, thinner does wonders removing such a mess. With use...
  12. Sea Rider

    tohatsu 9.8 corrosion on vertical shaft (new thread)

    The lower leg oil should be replaced at each max 100 worked hours, can use any car gear oil 80-90 grade along 2 new drain plug's gaskets install. Happy Boating
  13. Sea Rider

    Thermostat housing hole.

    Gee, carb 1 still with hidden issues, luckily was detected on time before assembling back all 3 carbs in a row. What stated in the Carb Inspection Data has been plainly checked and fulfilled, you can save money by cleaning the pilot, main jet and nozzle instead than throwing them away if highly...
  14. Sea Rider

    Thermostat housing hole.

    Don't know if adjusting all 3 carbs to meet 15 mm setting it's a exact Mars science, there should be some small gap tolerance. That info should be stated in the Yam's 40 HP Service Manual which no one seems to have a copy to check that out. When the fuel pump delivers fuel will fill the carb's...
  15. Sea Rider

    Thermostat housing hole.

    Gee what a huge collection of wooden cottoned pokers LOL!! excellent to have served the carbs well. With respect to the tach can buy a cheap induction one, would recommend this one : Check Iboats, Amazon https://www.hardlineproducts.com/product/hourtach-meter-up-to-8-cylinders/ It's a day/night...
  16. Sea Rider

    Need help selecting new prop - 89 Wellcraft 210 Classic

    As a test, go for a wot run loaded with 5 souls on board on flat calm water cond and report the max rpm achieved to know how much wot rpm the motor lost against the reported revs achieved while boating with 2 up. If you prop right that motor to rev to its max 4600 rpm range to plane faster with...
  17. Sea Rider

    Thermostat housing hole.

    Will be much easier to clean the nozzle's seat after a long overnight thinner soak. Plan installing new spark plugs or the old ones are still good to go ? It's impossible to deternine if the carb's mixture screws will need any further adjustment. When reinstalled back to the same position the...
  18. Sea Rider

    Mercury 25EL cooling issue

    When there's water leaks on the pan means the gasket cuold be deformed, compressed, burnt, both mating surfaces were not cleaned well when the new gasket was installed. Lower crankcase gasket must be hand torqued tight with a wrench and re torqued back soon after some run hours. Some gaskets...
  19. Sea Rider

    2004 TLDI MD90, unable to pull any codes/engine hours and no beep when turning key, cranks up fine

    Buy a marine battery factory recommended for that motor, tech specs are in the Owner's Manual... Happy Boating
  20. Sea Rider

    tohatsu 9.8 corrosion on vertical shaft (new thread)

    Wise decision as there's too much handwork involved removing many parts from the motor to access the steerig shaft in order to pull it out the swivel barcket, other related problem will be to come across many seized bolts that will eventually break in place when being removed. If the swivel...
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