How to fix a rough running four stroke outboard

Diagnosing a rough running four stroke

[MrNegative]

Ok video, would have rather seen removal of the carb, disassembly, cleaning, drying and install instead of difficulty in starting, climbing in and out.

[scotthunt]

Should be like a urine stream not a kidney stone stream. 😂😂😂 That analogy had me cracking up. Great video man!

[BroderGustaf]

Hi, great video. Question though, how did you know the correct setting to reset the carb mixture ?

[weaselrodent]

wish it was a EFI f60 runs bad but 2015 f60 not alot of info with this motor, good video. happy new year

[brianhiggins]

Excellent video- Exactly the issue i am having on a 2105 9.9 Yamaha. Do you happen to have one that shows actually removing the carb, float and pin?

[krisjcleveland]

Worth the effort and time to glean information needed…thanks for sharing

[shadyfieldhomestead]

I don’t know about the garden hose issue and hurting the impeller. I couldn’t even use our water because our pressure was less than 20 psi. I brought the psi up to just enough that the engine will piss while running, up to 55 psi. I need all of that pressure for running my engine.

[sacju]

Great video. My 8hp runs rough. I upped the idle a little but same issue. Now I know what else to check on it.

[glatisant]

Any useful to verify the pilot screw position against factory spec, before taking the carb down? Cannot that cause bad idle, if wrongly set?

[WogChilli]

Do you have a video on setting idle and mixture. Thanks

[fishhunt]

My 2014 9.9 has blown the same water pipe 3 times. This hose springs a leak and sprays a mist of salt water that gets sucked into the carburetor. The engine starts running a little erratically, and then eventually will not run and becomes a hard/no start. I’ve had to remove and clean the carburetor three times. It clogs completely with salt, about a quarter of a teaspoon in the fuel bowl. All of the fuel jets clogged with salt. I only replace with genuine Yamaha parts, but in this case, the same part keeps failing. My next replacement will either be a stainless steel pipe with rubber ends for connections. Or a heavier duty, braided piece of fuel hose instead of the thin rubber OEM “pipe” supplied from Yamaha.

[edmctug]

Rotten Ethonal added gas sucks dont let gas sit in tanks for long , cleaned carbs are your best friend !

[neillee]

Good work - got the same motor, had the same issue. Also has issue with emergency kill switch perioidically killing the engine - i disconnected the kill switch temporarily and no issues since. Ever hear of this issue?

[josteincarlsen]

Thanks! Going to try that carb clean tomorrow! My Suzuki 9, 9 4stoke also goes like shit

[timwalworth]

How did you set the carb idle and mixture?

[dbarr]

Does this motor have an air and fuel filter? If so why didn't you check that first?

[johnnybehealthy]

Awesome show and tell video. I believe I have same exact issue with my 4 stroke 6 HP

[NovoGold]

How do you expect it to start with those short key bursts..?

[PN_]

We’ve got this same engine and are having idle problems. What controls the air intake butterfly? I see some 9.9 Yammy’s have a link to the throttle, but we don’t and just seem to have a solenoid....

[stevenichols]

Do you have video just pulling off carb? Its straightforward. I just want to know what tool can quickly unscrew the second bolt thats behind all the crap in way?