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    2017 MFS40A Crankshaft End Play

    alldodge, I enjoy exposing vulnerabilities in objects because people who purchase a product deserve to know the weakness of the product when they put their hard earned money into a brand name item who in the past has had a fairly spotless record of selling a product that is known for it's...
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    2017 MFS40A Crankshaft End Play

    I have a problem with my 2017 MFS40A crankshaft excessive end play. Tohatsu says the max is 0.020 but mine is 0.065 and has started to make contact with the Tach-Pickup under the flywheel. Why did Tohatsu make a disposable engine without a set of thrust bearings for the crankshaft like the...
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    M40D2 water system question

    Update: After a week of being in bed due to a stomach virus, I was able to finally get out of the house and run the Starbrite De-Scaler through this motor. I took off the gearcase and hooked the submersible pump directly to the water inlet pipe. Loaded the barrel with a 1 to 1 solution and...
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    M40D2 water system question

    Sea Rider, I have no intention of operating it without a thermostat. As far as the previous operating conditions: The power head ( I Replaced The Original ) came from the Galveston Texas area and that's predominately salt water. I took off the lower unit off & thermostat and hooked a 20GPM...
  5. L

    M40D2 water system question

    Yes, there is sufficient water when I connect the hose directly to the supply tube and there is little to no resistance if I blow in the hose. However, when I ran it after about 10 minutes up the river I pulled the cowl and the head felt warmer than normal. I just wanted to eliminate the...
  6. L

    M40D2 water system question

    This old frame is the 1993 25 Mega which is the carburetor'd de-tuned 40 for the 25 HP restrictions back in the day. The hole in the picture above emits almost half of what the pump puts out. Now that I put it on the water ( Ran it ) and then came home and did the trick with the rubber hose &...
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    M40D2 water system question

    The parts came in and before I put them on I ran the 3/16 hose through the lower pump housing all the way to the screen(s) and no obstruction. Then I installed the new upper housing ( 3T5650160 ) and the new pump kit ( 3T5873222 ). But before I put the lower unit back on - I used the same piece...
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    tohatsu m40d water pipe issue

    In the diagram that Paul posted - Is the pipe ( #30 ) loose where it connects to the lower engine base? Or are you saying that your motor doesn't have the Water Pipe Seal ( #31 ) and the Collar ( #32 ) ? Because the Collar ( #33 ) is the seal between the Water Pump Seal Lower ( #29 ) and the...
  9. L

    M40D2 water system question

    Paul, Thank You For Correcting my previous statement. The parts may not yet be superseded by the new numbers. The 1992 - 2002 NS & M 40/50 and a few other later 2 stroke models use the 3C8873221 pump kit & 3C8560161 housing. However, the 3T5873222 pump kit & 3T5650160 housing are factory parts...
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    M40D2 water system question

    There is no " Seal " where the driveshaft goes through the upper housing. I am now hunting down a new upper pump case and water pump kit. It seems that there are a huge amount of parts from Japan that are on back order and these 2 items that have been superseded by new part numbers are in scarce...
  11. L

    M40D2 water system question

    I did as you suggested by using a piece of rubber hose pushed onto the driveshaft and using a drill bit with duct tape holding the drill bit. Then using a high speed drill on the drill bit I turned the driveshaft CW with the lower unit submerged in water. Most of the pressure generated by the...
  12. L

    M40D2 water system question

    The hole I am trying to describe is on the mid section casting where the 2 halves are fused, just above the lower motor mounts. This picture might be easier to understand
  13. L

    M40D2 water system question

    I added the Water Pipe Rubber Lock and there was no difference. I am now going to replace the Upper Case and a complete water pump kit. I am now guessing that the source of the water is coming from where the Upper Case goes over the driveshaft. I will report back
  14. L

    M40D2 water system question

    Thank You Sea Rider for responding. The picture above is a small hole in the casting of the mid section on the front and just above the lower engine mount. The compartment that the water appears to be coming from is where the gear shift runs vertically and also where the water pump is on the...
  15. L

    M40D2 water system question

    I am getting an unusual amount of water coming from the hole in the mid section shown in the picture and low water pressure from the tattle tail. I had ran through some shallow water and I assumed that I had picked up something so I got towed back to the launch. When I got home I pulled the...
  16. L

    1996 Suzuki DT25C Oiler Removal

    Ok, I've taken it upon myself to remove the gear and grind the helical portion of the gear that makes contact with the crank gear. After the pump gear would no longer make contact with the crank gear, I removed another 1/8 inch to completely avoid contact. I then made a blank plate, gasket and...
  17. L

    1996 Suzuki DT25C Oiler Removal

    I recently purchased a used '96 DT25C that I was told wasn't used a whole lot. After closer inspection and thermostat removal I've come to a different conclusion. The lower unit has a pretty good amount of wear in the gears. The throttle cables have significant wear and needed to be replaced...
  18. L

    Suzuki DT25C Console to Tiller question

    I recently acquired a 1996 Suzuki DT25C outboard that was originally set up as console steering. I had a buddy with an outboard that no longer runs with the tiller handle. But his didn't have the starter or alternator, so I am going to use the starter switch that was on the control box. I was...
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    2000 DT25C Rebuilding Question

    I just picked up a 2000 DT25C that appears to be in good shape but well used. Here in the Lake Charles, Louisiana area there are 2 primary non-dealer outboard mechanic shops. One of them prefers to not repair or rebuild these models and the other is a little on the pricey side. My question is...
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    Nissan NS30 Water Pump Question

    The other day I had taken the 1996 Nissan 30 out for some night fishing. I had changed the complete water pump with a Tohatsu OEM repair kit before putting it in the water. The day I put the pump in, it pumped but not a full stream at idle like my Tohatsu 25. During the night I moved the boat...
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