Home Forums TaG Rotax Max Evo Upgrades Reply To: Evo Upgrades

Bruce Woodrow


Sorry, no – those specs are for the prevo QS and QD carbs, the rules for the Evo XS carbs are:

Specific regulation for Dellorto VHSB 34 XS

Carburetor slide shows digits “45” in casting.

Jet needle must be stamped with “K57”.

Two floats marked “4,0 gr” are legal to be used only

Idle has to be stamped with “60”.

Idle emulsion tube has to be stamped with “45”

Needle jet  Stamped with ”DP267” Total length: 51,0 +/- 0,3 mm          Length of bottom section: 33,0 +/- 0,2 mm

Carburetor insert must show stamping “12,5”