rotax senior max evo 2018

 

BASELINE MAIN JET (ON VP C9 RACE FUEL): 124

BASELINE MAIN JET ON (93 PUMP FUEL W/ETHANOL): 125

FUEL / OIL RATIO: 50:1 (2.6 OZ / GALLON) OR (20.3 ML / L)

PIN HEIGHT: PIN 2

FLOAT HEIGHT: NEUTRAL TO SLIGHTLY RICH (MIDPOINT OR JUST BELOW MIDPOINT ON ROTAX FLOAT TOOL)

AIR SCREW: 3 FULL TURNS OUT

IDLE SCREW: 4 FULL TURNS OUT (IDLE AROUND 2,500 RPM WHEN ENGINE IS COLD, SHOULD NOT REALLY IDLE WHEN HOT)

OPTIMAL WATER TEMP: 130 F / 54.5 C

SPARK PLUG: ROTAX GR9DI-8

SPARK PLUG GAP: .9 MM

UPGRADE FROM JUNIOR:

PARTS: Senior cylinder, Power valve assembly

ENGINE WORK: Replace cylinder, and reset squish if desired (Senior is 1.0mm vs 1.2mm for Junior)