EF3000iSE runs great then after shutting down it won't run

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EF3000iSE runs great then after shutting down it won't run

Lynxlake
We have a EF3000iSE just serviced . Ran it for a few hours with no problems until we shut it down . Tried to restart it and it won't run , sputters and sounds very rough  and  quits

Same problem it had before servicing.   Had to haul it out from a very remote location in Alaska .Dealer said they couldn't find anything wrong with it. It ran when we got it there so we hauled it back out to the cabin and used it for several hours with no problems until we shut it down. Now it won't run again UGH!!!!

We changed the plugs to no avail.
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Re: EF3000iSE runs great then after shutting down it won't run

JaapAap
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Re: EF3000iSE runs great then after shutting down it won't run

Lynxlake
After it sits for a while it starts up and runs great!

Sent from my iPhone

On Jun 26, 2016, at 3:56 AM, JaapAap [via Yamaha Generator Fan Club] <[hidden email]> wrote:

Try draining the carburetor. At the bottom of the carb, there's a fuel line coming out and a little screw. Unscrew this screw, then fuel will run from the carb through the fuel line out of the generator.

Once this is done, try starting it again, and be vigilant. Don't give up after 2 yanks.

It sounds to me like it's flooded.

How do you switch it off? This could be prevented by switching it off by terminating the fuelsupply without actually switching it off. Let it burn of the fuel in the hoses and carb and then die on it's own.


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kpn
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Re: EF3000iSE runs great then after shutting down it won't run

kpn
did u ever figure it out .im having exact same problem.
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Re: EF3000iSE runs great then after shutting down it won't run

CycleRob
In reply to this post by Lynxlake
Lynxlake wrote
 Ran it for a few hours with no problems until we shut it down . Tried to restart it and it won't run , sputters and sounds very rough and quits
 It does sound like it was flooded (too much fuel). Here are some important suggestions/rules:

1--Prior to shut-down, disconnect the AC loads, shut off the fuel valve and let it run until it lean surge RPM cycles, then shut it off.

2--The Genny must ALWAYS be run on a level surface.

3--Four--Six hours later, if the engine is still somewhat warm, try starting it without the choke.

4--A fully enclosed Blue cabinet Genny run hard-n-heavy for 2 hours can get the fully enclosed Engine/Exhaust systems VERY HOT. That trapped heat mass, both being attached to the carb, can boil the fuel in the carb floatbowl, flooding the intake port. Always allow a 2--5 minute No-Load, fuel valve off cool down depending on the outside air temp and strength of the last/recent electrical load.

5--NEVER move or transport the Genny if item 1 above has not been performed!! Doing so could cause intake port, combustion chamber flooding and possibly fuel-oil dilution . . . giving the hard/no starts you experience. If this is the case, smell your your dipstick's engine oil for gasoline fumes.

6--Prior to storage for more than 2 weeks, completely drain the carb floatbowl and use the recoil start to approach and then partially consume half of the compression stroke's pressure resistance, so both valves are closed, excluding rust causing moisture.
.

 
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