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  1. Douglasdzaster

    1992 Yamaha 40 MSHQ shutting itself down at wot

    Well I went with the #2 and used a tiny trowel. Also figured out the reason for the fail of the pump. The rubber piece that was slid up the pickup tube is actually supposed to be in the pump housing. Didn’t figure this out of course until after I had it together. Always fallow the breakdown in...
  2. Douglasdzaster

    1992 Yamaha 40 MSHQ shutting itself down at wot

    UPDATE: the housing cleaned up pretty good. It does have a little pitting so I’m thinking of using a gasket sealant that is none hardening. It’s between Permatex #3 aviation gasket sealant or the #2. I’ve used the #3 and it’s awesome stuff. But I read that it’s not as good on aluminum where it...
  3. Douglasdzaster

    1992 Yamaha 40 MSHQ shutting itself down at wot

    Hey thanks for the reply. I found a washer in the break down that’s supposed to be on the tube above the water pump.Water pump kit came in The old gasket on the bottom housing left some remnants so I cleaned it up. Upon farther inspection it looks like the original 1992 part. I thought I’d...
  4. Douglasdzaster

    1992 Yamaha 40 MSHQ shutting itself down at wot

    UPDATE: No reply’s to my post but will continue to update. Maybe it will help someone else out. When I pulled the lower unit I found a couple of questions. I noticed the rubber piece that connects the water pump to the pickup tube wasn’t in the pump. I found it was slid about a foot up the...
  5. Douglasdzaster

    1992 Yamaha 40 MSHQ shutting itself down at wot

    UPDATE: Thermostat had a little gunk but cleaned right up. Tested it in a pot of water and it’s functioning. About to pull the lu. Can I flush water up the tube with a water hose or through the thermostat housing so that any debris will come out the tube? I don’t want to mess Up by guessing. Any...
  6. Douglasdzaster

    1992 Yamaha 40 MSHQ shutting itself down at wot

    Hello everyone, Thought I had fixed this problem due to water getting in the cowling. That’s fixed and no water in there today. when I run wot , after about 5 minutes the engine starts slowing down and the red warning light comes on. I let it idle about a minute and the light goes off. I forgot...
  7. Douglasdzaster

    Torque on prop nut

    I was thinking the same but not sure. Thanks for the advice.
  8. Douglasdzaster

    Torque on prop nut

    Hello everyone. I have a Yamaha 40 MSHQ and the torque spec for the prop is 25ft/lb. While installing a new prop when it hit the torque spec the castle nut was covering the hole for the cotter key. If I backed off it seems pretty loose. Will it hurt to over torque it that little bit to get the...
  9. Douglasdzaster

    Carburetor question on restoration I’m working on 1992 40 hp MSHQ Yamaha

    Thank you sir! I’ll decarbed and then run it like I stole it. Then back to scouting out the fishing on this lake. I’m trying to find me some catfish and crappie spots but I keep stopping to catch more bass. LoL
  10. Douglasdzaster

    Carburetor question on restoration I’m working on 1992 40 hp MSHQ Yamaha

  11. Douglasdzaster

    Carburetor question on restoration I’m working on 1992 40 hp MSHQ Yamaha

    Hello gentlemen, actually it’s seen more idle time than wot lake time ,seems I’m always finding something wrong. Maybe I just need to run it. I did go back through the carburetors. All was clean and all jets were open. I had crushed all three of the seat o rings when I rebuilt. I’ve installed...
  12. Douglasdzaster

    Carburetor question on restoration I’m working on 1992 40 hp MSHQ Yamaha

    Yes sir, I have them adjusted to idle better. Like last time I’ll probably adjust a little more when I get it in the lake with some back pressure on the exhaust. My concern now is why are the spark plugs cleaner than the last time I pulled them. I’m worried about water going somewhere it’s not...
  13. Douglasdzaster

    Carburetor question on restoration I’m working on 1992 40 hp MSHQ Yamaha

    I found it a little easier to start with the middle carburetor first. But I got to tell you what happened when I went back out there today. I decided to test the spark gap with a new tester I got from Amazon. I set the thing for what the specs called maximum at first. Manual says to do this...
  14. Douglasdzaster

    Carburetor question on restoration I’m working on 1992 40 hp MSHQ Yamaha

    I got it all back together and started it up. Still running rough. It would miss and kick , then die. I finally got the pilot screws adjusted and it ran but still rough and rpms changing. I even replaced a needle on number 3 that was sticking closed pretty bad. It had a ring around the tip...
  15. Douglasdzaster

    Carburetor question on restoration I’m working on 1992 40 hp MSHQ Yamaha

    Number 3 , I had to pick out the o ring. It was clean as well and no water. Replaced the o ring and just like the others it went down to the carb body. I removed each seat after tightening and new o rings were good. I may have had the wrong size the first time. I’ll put the carburetors back on...
  16. Douglasdzaster

    Carburetor question on restoration I’m working on 1992 40 hp MSHQ Yamaha

    I’m on the second carburetor and so far the o rings are messed up on the seats. I remember putting the new ones on when I rebuilt everything. The new seats did not want to go down all the way and I must have messed up the o rings trying to get them flush with the carb body. They’re not even...
  17. Douglasdzaster

    Carburetor question on restoration I’m working on 1992 40 hp MSHQ Yamaha

    I’ve only had it out the one time when I took the grandkids. I’m trying to get everything right before the next lake test but you’re right I’m having to idle to much to do so. I haven’t decarbed yet due to all of the above. Can I do it at home , then change spark plugs or do I need to run wot as...
  18. Douglasdzaster

    Carburetor question on restoration I’m working on 1992 40 hp MSHQ Yamaha

    Sorry I haven’t posted any pics yet. But I figured out what I was doing wrong. I was addressing an idling issue and wanted back pressure on the exhaust so I used a tank with a hose running in it. It’s just deep enough to cover the cavitation plate which I found out isn’t deep enough. Water came...
  19. Douglasdzaster

    1992 Yamaha 40 MSHQ has water coming out of everything

    Update: After doing research all of the above seems to be normal. I’ve got a lot to learn about the lower unit and have learned more of the water circulating. Sorry for pushing the panic button. Thanks everyone.
  20. Douglasdzaster

    1992 Yamaha 40 MSHQ has water coming out of everything

    Hi, while getting ready for a lake test for one issue I think I have another. I was running the motor in a tank instead of muffs because I was checking an idling issue and wanted exhaust back pressure . I keep fresh water running in the tank when I do this. Anyway I noticed water coming up from...
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