i have a 2007 stratos that has the yamaha 50 on it...when i put it in gear it cuts off MOST times, when i go back and forth a few times it kicks in and runs just fine... when i disengage it revs just fine, it only does this when im in the water..please help so i dont have to spend crazy $$$$$

no help?? someone has to have had this problem b4...i only have 20 hrs on the engine

Did you buy it new last year?

no warranty coverage?

Been like this since you got it?
Done any recent maintenance?

Do you have the manual? It should describe the procedure to adjust the slow speed mixture, have you tried doing that?

You mean it won't idle in gear at all, or dies when you try to accelerate?
Any other symptoms? idles in neutral, accelerates ok? makes full RPMs?
What's your idle speed - could just need to be idled up a bit. Can't set the idle on muffs, has to be done with the lower unit submerged.

ok thanks for replying 1st of all...now that i got ppl that seem to know what ?'s to ask...yes i bought i new off showroom floor at Cabelas...as far as warranty coverage it has 2 yrs...i just dont want them to work on it and be o yeah by the way its not covered and then i have to pay...no it ran fine since i got it...then one day last fall it just took a dump and been doing it since...no maintenance has been done except putting fuel stabilizer in it...no i havent tried adjusting anything, i just know how to fish not boat maintanence(guess i need to learn)...ill give the everytime i launch scenario....cranks just fine...and idles good...put in reverse and dies...crank up again, do some kinda rev job on rev back and forth it gets power and backs up...then i go to take off and nothing but gurgles...dead....do the rev thingy again and it takes off and run as if it were the day i got it...this is everytime i take off

I don't know your particular motor, but in general this is what I'd do if it was mine. If it's the 4-stroke model I'd have to take it in, but if it's a 2-stroke carbed motor, I'd check the idle RPM and readjust the idle speed mixture on the carbs. The procedure varies from motor to motor.

Next, a spark test to rule out an ignition problem. Set your spark tester (couple bucks at auto zone) at 1/2" and look for a sharp blue spark on all three cyl.

Warm the engine up and inspect the spark plugs - look for one that looks different from the others, see if there's any carbon fouling, check the gap, etc.

Check the linkage between the throttle and spark advance, I have no idea what that looks like on a yamaha, but the spark advance has to begin just before the throttle valves start to open.

If none of that resolved the problem, I'd rebuild the carbs - I'm just guessing, but I'd be surprised if a warranty covered dirty carbs. It's not too difficult a job if you can get your hands on a service manual.

good luck...........

This may sound like a dumb question but is the bulb hard? I have to pump the bulb on my yammi if it sets for very long then it runs fine--may be way to basic of a suggestion but I thought I would mention it. Hey if you are ever on BB one of us BB regulars can give you an extra set of eyes on it.

I agree with Jason. I have a 50 hp Yammi and I had the same problems until I learned to pump the bulb until firm. You have three carb bowls to fill. Also it's really cold natured so when you start it, in the water, push the ignition switch in when you turn on the key on to activate the choke and let it idle for a full 30 to 45 seconds before putting it in gear. Once you follow these simple rules you'll find out it's a great motor, very good on gas and it pushes my G3 up to 35 mph with a full live well, gas and gear.

thanx guys...ill give all of them a try tomorrow...fishing wed night gvine tourny again...goin for 1st this time

If your motor doesn't run with the bulb pumped up tight let us know. if the carbs are gummed up ( suspect you have an idle circuit plugged) I can tell you how to clean them short of a tear down and it won't hurt the motor. Need to know also if it's a 2 or 4 stroke. Semper fi

ok when i pump the bulb it gets hard and then it eases back to soft...like its not holding air?? it ran fine a few times yesterday and didnt bog everytime...id check the bulb and its soft

gasoline. it holds gas, not air.

The fuel line has to hold pressure. it can suck air in from any of the fittings upstream of the fuel pump, or leak gas downstream of the pump. You might be able to hear it sucking air by listening close when you pump the bulb; or those fittings are not too expensive anyway. You'd probably know if it was leaking gas under the cowling.

Or, the float valves in your carbs could be worn down or misadjusted, which could leak fuel into the cylinders creating a rich condition causing it to die out when you put it in gear. Might be slight enough to not cause noticeable performance issue at high speed. Carbon fouling on the spark plug rims is a symptom of a rich mixture.

You can test the operation of the float valves by blowing into the carb intake nipple. Held right side up should be very little resistance; upside down, no air should pass, blow hard as you can. It's best to drain the carb bowl first. Don't ask me how I know. Premix is an acquired taste.

Also possible that your fuel pump is getting weak. What happens if you pump the primer bulb while it's bogging?

My opinion, you have to resolve the fuel pressure issue before going any further.

Note that if you do have a clogged idle passage, whichever cylinder is not getting fuel is also not getting lubrication - it's being dragged through a dry hole - not good.

ok this mught get some laughter outta some of you but here goes....i have oil that goes inside the engine doesnt that inject it into the gas automatically? or do you still have to mix oil into the tank???

4 stroke or 2 stroke?

2stroke...this is what i got in the 50

http://www.yamaha-motor.com/outboard/products/subcathome/10/home.aspx

yes, it should inject oil into the engine.

You might contact your dealer and tell them what is going on. If it is not holding pressure then there is something wrong, and no older than your engine is with a 2 year warranty there has to be something they can do. Good luck.

if yamaha delivers the oil into the carb bowl (which is what I'm accustomed to), then a clogged jet will restrict oil right along with the gas. if it shoots the oil straight into the crankcase, then the affected spark plug(s) will be some kinda messy, way oilier than the other(s).

Typical Jarhead. Probably a stubborn know it all Gunny or old fart First Shirt. Take the engine back to Cabelas. Getting too deep into an engine during warranty could void the warranty. Tell them if it is not a warranty issue to call you (write this on the repair ticket) with the problem, why it isn't a warranty issue and how much it will cost to fix it. The most you could be out is the inspection fee if it isn't under warranty and you will know weather you have the ability to fix it or have them fix it. That's money well spent in my book.



Yamis deliver the oil behind the carb. Yamaha has the patent on this but I think it runs out in 2 or 3 years and you'll probably see most manufacturers go to this when it does. By not delivering into the gas first, there is a reduced potential to clog jets.

whoa now...im not that old yet...im only a Sgt on my 5th yr which dont pay so great..lol

Not even a SNCO and he is acting like a seasoned E-7 or better. LOL. I was a ninety day wonder out of TBS. If the Corps thought you needed to have a boat they would have issued you one in boot.

come on now...you prb know we are the most frugal ppl you will ever meet... i was just looking for a seasoned vet to help out and seems i have many...anyone think a shot of seafoam and some new plugs will work??

You can throw all the parts at it you want, but you're just grasping at straws; it won't run right until you get the fuel line to hold pressure.

seafoam is good for keeping the engine clean, but you can't fix a gummed up carb by adding anything to the gas.

o ok..thanks for the info

I didn't see mentioned that a new two stroke yami is oil injected and has to run 50:1 in the tank as well during the break in --- 20hrs --- seeing how you have 20hrs, I believe on a 20hr check its new spark plugs and any adjustments and a pretty invoice for 200 bucks that will say you had it done for any future warranty problems

I'd say to get it done, or I have a well broke in 40hp yami that never dies that I'll trade you