Hard start question 2000 115 hp carburetor 2 stroke

Mitchken

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Dec 7, 2020
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I have had this problem for awhile now and was wondering if anyone had any thoughts. I have a 2000 Yamaha 115 hp 2 stroke carbed. It has always been hard starting. Pump bulb hard, choke and turn over with nothing. Leave choke off and turn over for ever and it will finally start. Once started it runs perfectly. Barely hit the key and it’s running all day without ever missing a beat. Thought maybe bad coils but have a very nice spark jumps on all coils even when cold.

Thought I would try something so today I took off the carb cover, pumped up the bulb, shot a little gas in each carb chamber, and locked the chokes in closed position. Turned the cold motor over for about 2 seconds and it popped right off.

So I’m assuming a carb problem but have no idea if it’s an air/fuel adjustment or float adjustment or something else. I may be better off bringing it to a mechanic as I do not want to mess up this motor, it runs too good after it starts. Anyway thanks in advance.
 

boscoe99

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Aug 22, 2013
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Mitchken

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Dec 7, 2020
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Is the choke working from the dash?
Yes choke is working but as I looked at it more this afternoon, I noticed there is a up/down adjustment for the electric choke. It's hard to tell for sure because you can't see the butterflies but I think it was out of adjustment and wasn't shutting all the way. I made some adjustments and will try again in the morning with a cold start. Thanks!!
 

Mitchken

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Your motor has a manually operated choke and not a Primestart???
It has an electric choke and a manual pull-out choke as well in the front of the motor. I replied above but I think the electric choke was out of adjustment (didn't know it could be adjusted). Will see if it start in the morning cold. Thanks so much!!
 

Mitchken

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Dec 7, 2020
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Just thought I'd give a quick follow up on the hard-start issue in slight chance someone may have this happen to them. My 2000 115 hp Yamaha does have both a manual pull-out check (by the motor) along with a normal electric choke operated with the key switch. Mine was indeed out of adjustment. I had to move my electric choke "up" and then the butterflies would close completely allowing for a completely closed "choke" position. Seems to start fine now. Thanks so much!
 
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