Plugged/dirty fuel filter is one possibility.
Does it start up properly?
Clogged air filter, bad/worn sparks
did you wait until engine reaches proper working temperature before you hit the gas or at least wait for a few minutes before hitting the gas. How much choke do you have on it when starting up ?
If it´s automatic choke, be sure it opens up properly when the engine is warmed up.
Since it´s a snowmobile, be sure that you don´t have frozen fuel lines (eg water in the lines)
Dodge ram van dies after starting
the fuel filter is starting to go bad.
vacuum leak.
oh
oxygen senser
Are the battery and charging system in good shape?
Take it to a Lexus dealer.
The body suddenly dies
antiteft will need to be disabled.
A snowflake. WRONG! Snowflakes don't die! ICE Wrong. Ice doesn't die. Tiberinus Silvius.
Krishna dies due to his own wrong doing by a mere hunter
what is a controller in 2.5 motor in a dodge