[LEAF LOGO]
THE CENTRAL USA ROTAX independent Service Centre


independent Service Centre for ROTAX® AIRCRAFT ENGINES

ATTENTION!

WE HAVE AN A & P TECHNICIAN ON STAFF AND
OFFER FLY-IN SERVICE
CALL FOR AN APPOINTMENT
1-800-532-3462 EXT. 154

• ROTAX Engines, Parts and Repair Services for your ROTAX Powered Aircraft
• Ultralight, Experimental Light Sport & Special Light Sport Aircraft Maintenance
• Sales of Engine and Flight Instruments, Tires, Brakes, Propellers, Hardware & Pilot Supplies

.

Rotax 503 Single Carb Engine
[PICTURE]
46 HP SC at 6250 rpm
2-Cylinder, 2-Cycle, Oil Injected, Fan-Cooled
(photo is of a dual carb 503)

Block Only
No Drive
With "B" gearbox
With "C" gearbox
With "E" gearbox
With "B" gearbox & elec. start
With "C" gearbox & elec. start
Operator's Manual (999-602)
Operator's Man., CDI (999-606)
Repair Manual (999-611)
Repair Manual, CDI (999-600)
Parts Manual (999-650)
Parts Manual, CDI (999-605)
Info Pak (999-668)

Call For prices on all ROTAX Parts
1-800-532-3462

SPECIFICATIONS
Bore: 72 mm (2.84 in.)
Stroke: 61 mm (2.40 in.)
Displacement: 496.7 cc (30.31 cu. in.)
Power output: 34.0 kW (46 HP)
Maximum rpm: 6800 for 1 min.
Direction of engine rotation: Counter clockwise, viewed towards PTO
Cylinder: 2 light alloy with cast iron sleeves
Piston: Aluminum cast with 2 piston rings
Ignition system: Redundant breakerless Ducati capacitor discharge
dual ignition with magneto generator
Generator output: 170 W AC at 6000 for 1 min. & 13.5 V RMS
Carburetor: Bing 36 mm, hand lever or cable choke
Fuel pump: Pneumatic fuel pump DF-44
Fuel: Premium unleaded NOT BELOW MON 88 or
ROM 90 (octane rating)
Lubrication: 2-stroke oil in fuel or oil injection
Mixing ratio: 50:1
Lubrication: oil injected, 50:1, mechanical lever