That chunk of rubber HAD to come from somewhere... Check upstream to see where there's a piece of something missing...
Yes we're having the same exact problems. Just got the Grizzley back from the ATV mechanic shop--they soaked the carburetor , started just fine at their shop, bring it home, everything works great, parked for 2 days and now it won't start again.same **** just happened to me.
-on the bottom of the carb there is a small screw.
back it off and see if you got fuel getting to the carb.
it will drain out of a small port just in front or back of the small screw
but even if fluid does drain out it still does not mean the carb is not pluged some where.
-if you do not have fuel
pull the main fuel line off with the petcock in off
after the main fuel line is off open the petcock and see if you have fuel
-if you do have good flow there
than i would say pull the carb
-if you do not have good flow the petcock maybe jacked up
i had to pull my carb. and take the whole thing apart and dunk it in a carb dip
works great now
after doing some insp.there was a nice build up of filter oil in the intake
and i think that is what pluged mine up
hope this helps