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I have a 2007 Yamaha 450 grizzly. It has ran fine until yesterday.
now it will not start at all I have pulled the carburetor and clean that out even though I did not see any obstructions, it turns over fine, but it sounds like it’s not getting any gas.
Any thoughts would be appreciated. Dave
 

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Does it pop and backfire?
Has the valve lash been adjusted?
 

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Check the fuel petcock for dirt debris and the smiley gasket deteriorating.
X2 change the spark plug.
 

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I can't tell from your first statement "it turns over fine, but it sounds like it’s not getting any gas" as to whether you're getting any indication of combustion in the cylinder. If not, it might be worth verifying you're getting spark before you do any more w/ fuel and carb.
 

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Check the kill switch, they can corrode and cause headaches.
Mine became incredibly hard to switch on/off. Got to where if I switched it off I almost couldn't get it to switch back on. Even though the ball corroded pretty bad it didn't effect the contacts, they were clean..
If they had used a "stainless steel ball"/detent there would've been no corrosion. Grizzly is always stored in a garage. It was easy to service though.
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