Fuse should have nothing to do with running once it's started.
Gonna guess the charging system has died. Get it running then measure battery voltage while well above idle.
If it's not at least 13.5 VDC either the stator, rec/reg or wiring between has an issue... or your battery has a multi cell short (not as likely).
'01 660 Raptor, Burgard +2+1 arms, YFZ Shocks, LSR anti-vibe, CTR pipe, jetted, K&N
'01 Polaris Scrambler 400, K&N
'02 Honda 400ex, Big Gun pipe, jetted, K&N, Lonestar +2 A-arms, Lonestar anti-vibe
'02 Honda 400ex, DiamondJ +3 A-arm widener, Lonestar anti-vibe
New Toy: '16 RZR XP4 1000 Turbo