MRBB, we think alike, always have hard copy manual of any toy I have. I can't believe how many people don't or even the owners manual. Found it all while sitting watching the race and reading (R&R). Sure seems to be a lot to learn with these new machines.
like others said, there is NO shut off, almost all EFI machines don't, due to they work off pressure systems, so, there like your car/truck, anymore on that.
and as said, there is NO real reason to alter fuel mixtures on a STOCK atv, the ATV's computer will do all the mixing it needs on its own to give you long life and in all temps and elevations,
they DO sell things that allow you to MOD things, but that will void any warranty you have if you add one, and the SMALL hp gains, are in NO way really worth the price tag for them IMO,
there mostly for the guys that run BIG tires and need every ounce of HP they can get, or super performance minded riders, that THINK 1-2 hp is making a difference on hat they do LOL
if your NOT racing , its honestly NOT worth the effort, these are LOW hp Honda's here, always will be , Honda dodn't make anything in a 4x4 atv with any real HP
your foreman MIGHT be about 30 hp, adding a programmer, MIGHT get you 2-3 more hp, MIGHT< and that ain;t HP at the rear wheels either
just ride the ATV as is, some day IF you want more, your BEST option sadly is, going to a different OEM, unless HONDA< breaks a LONG time standing, and comes out with something with more SPORT to there line up
which doesn't look like any time soon IMO and most other Honda fans
I THINK we all WISH they would,< but its been a LOW odds dream to date on one !