2-Stroke Parts 447, 503, 582

A – Loctite 221
B – Loctite 243
C - Loctite 648

c – Tighten to leave 1mm distance between starter cover and electric starter

A – Loctite 221
D – Loctite 574

AR – As required

a – Bushing not available as spare part, use drive housing assy. 866880;
b – End frame with sleeve, not available as spare part, use end frame assy. 866900;
c – Bushing, not available as spare part, use drive housing assy. 866900;
d – brush, not available as spare part, use brush holder assy. 866890;
e – Spring, not available as spare part, use brush holder assy. 866890.

AR – As required

a – For specific use see installation sheet;
b – Use at intake silencer version;
c – For 582 UL mod. 90 without fresh oil injection;
d – With fresh oil injection

AR – As required

a – Brush not available as spare part, use brush holder assembly 866891

A – Loctite 221
E – Anti-Seize
I – Lithium-Base Grease
O – Engine Oil

a – With 2 rings, Standard;
b – With 2 rings, 1st Oversize;
c – With 2 rings, 2nd Oversize;
d – Standard Size;
e - 1st Oversize;
f – 2nd Oversize;
g – ATTENTION: Use only once

447 UL – 29.5 kW
503 UL – 34 kW
582 UL

a – Base carburetor for air-cooled engines with bowden cable choke. NOTICE carburetor without calibration. From engine S/N 447 UL: 3,940.675, 503 UL: 4,795.201;
b – Base carburetor for liquid cooled engines with bowden cable choke. NOTICE carburetor without calibration; From engine S/N 582 UL Mod. 90: 4,656.088, 582 UL mod. 99: starting with serial production;
c – Carburetor housing, not available as spare part, use carburetor assy.;
d – Jet-needle, see carburetor calibration sheet;
e – Idle-jet, see carburetor calibration sheet;
f – Needle-jet, see carburetor calibration sheet;
g – Main-jet, see carburetor calibration sheet;
h – Only necessary on high altitude compensation kit (not available anymore)

a – RED 67.50 MM - 67.51 MM, GREEN 67.51 - 67.52 MM;
b – Cylinder PTO side;
c – Cylinder MAG side

For Rotax 912iS, 912ULS, 912UL, 618, 503, 447, 377, 277

Previous part number 938-795

I – Lithium-Base Grease
X – Adhesive

AR – As required

A – Loctite 221
I – Lithium-Base Grease

a – For configuration free-air-cooled;
b – In a roll/Sold per meter (39");
c –  For magneto flywheel new version (with closed cage), Torx screw also valid for old version. At disassembly and reassembly of the screw, the thread has to be cleaned of the remaining coating and secure with Loctite 221. As an alternative a new screw can be used.

AR – As required

a – Air guide, carburetor side;
b – Air guide, exhaust side