Need to verify here that fuse is indeed blowing as start up.

All solenoids fire at once at start up ... its a big rush of current through the fuse so make sure its a good slow blow you have in place.

Im looking at the schematics for devil riders here and it doesnt tell me which is F1 or F2 only that they are both 3A.
What you could do to narrow it down is take off one of the CN17 connectors ( this is split into 3 parts yes?).. 2 larger connectors on RHS and a small one on far left.
Take off far right and see if fuse blows at start up again... if it does then replace and remove middle one etc.
At least then we can narrow it down to a certain row on the cct... might take 2 fuses to get there though... this is where its handy to have 3A, 5a and 10A trip switches... saves running out of fuses.

No one else will read this so its safe for me to tell you that a 5A fast blow is as good as a slow blow 3A .. keep it to yourself though