Question about Yamaha Electrical Supplies

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I have a Yamaha 650DE gasoline powered generator which when started comes up to speed, then quickly stalls or nearly so only to speed back up then once again almost stall; repeating this sequence until it's shut down

Posted by thom spears on


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This sounds like a fuel supply problem. Probably gum or varnish in the carbureator. Rebuild the carb and it should be fine.

Posted on May 23, 2014


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  • 72 Answers

SOURCE: conversion of Yamaha gasoline electricazl generator engine to natural gas

My answer:

Hello Bill:

Here are the site links you'll need to check and/or get info, or buy your adapter kit for your Yami YG4600D Genset conversion kit.

Most likely it's running an 8 or 10HP engine on it now? In any case it's most likely less then 12HP. Not sure what size engine you have, as you didn't say only for the model #? On older Gensets it's harder to track down the HP rated engine is all.

For your Yami YG4600D Genset there you most likely will have your choice of at least 4 adapter kits depending on if you are going to keep gasoline as an option. If you're definitely NOT going to be ever running gasoline again then there are 1 or 2 adapter kits to choose from.

Use the site links below, and then browse whichever area you want as there are many options there. The last link listed takes you through all the different engines by make & model #'s.

I would also shop around locally where you are in LA, as you might be able to get that adapter kit for a lot less then the $227 to $267 they are asking for there at that site.

If you don't see your exact model # (or kit) there call them on their 800 toll free # listed at their site.

Also - if this site doesn't meet your expectations customer service wise at least you will have a starting off point with the wealth of information supplied there!

"What Kit Do I Need?"

"Simple Explanation"

A and C Kit List
Please post me a reply as to this info helping you solve your adapter kit problem there by following my posting recommendations above. Also please rate my troubleshooting fix as well.

Keep me posted and I'll follow up as well.

Best regards,


Posted on Sep 07, 2008



  • 583 Answers

SOURCE: conversion of yamaha gasoline generaor into natural gas...

i know YAMAHAwere doingsome work on converting outboard motors to run on LPG they may be able to get a bit of info from the STATE distributors might be worth a phone call

Posted on Aug 10, 2009


  • 1 Answer

SOURCE: How can i fix my nixon gasoline generator

Hello, yes this sounds like a small blockage in the carburetor,
My first stem would be undo the carb bowl and clean this out, also make sure the float works ok and shuts the fuel off when in the up posission..
strip and clean the carb but pay attention to the screw what holds the carb on, not sure if this type has small holes in what lets fuel into the engine? also where the screw holds the bowl on, inside there holds another jet, this gets blocked, make sure its clean and you can see through it..
Make sure you usse the correcy size screwdrivers as these brass screws split very easy and can be a pain in the *** to find replacements..
if you need any more assistance send me a msg.. [email protected]


Posted on Feb 06, 2010


  • 1 Answer

SOURCE: My Coleman Powermate generator runs for ~60

take out the jets , and run small wire through all holes .should fix your problem

Posted on May 02, 2010


  • 31 Answers

SOURCE: Yamaha Portable Generator EF 1000

Try cleaning the carb out,(hog wash carb cleaner I use) the float may be stuck or the needle & seat.You may need a rebuild kit for the carb,about 12 bucks.hope this helps

Posted on Jan 10, 2011

Testimonial: "Good advice, thanks."

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Best regards, --W/D--

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