ROTAX Engines & Parts

B – Loctite 243

a – For cylinder 2 and 1/3;
b – For cylinder 1 and 2/4;
c – Carburetor housing not available as spare part. Use carburetor assembly,
d – Refer to service instruction SI-03-1998 current issue,
e – With clearance for O-ring (use only together with O-ring pos. 18 (P/N 950430);
f – For airbox P/N 867758, P/N 867756; See SB-912-044;
g – See SI-912-012, SI-914-014;
h – Package including two floats;
i – Special jetting according to instructions of the manufacturer;
j – Contain parts requirement for 2 carburetors;
k – Overhaul kit for 1 carburetor

AR – As required
c – Large. Cooling area 234 cm²/36.27 sq. in., d – Connection metric, e – Connection UNF

H – Oil filter

d – See Service Instruction SI-912-017 current issue

B – Loctite 603

a – Version 4.6, used from following engine S/N 914 UL from 4,417.849. Retrofit at older engines possible according SB/SI, Marked with S/N;
b – Marked with S/N;
c – Airbox pressure sensor;
d – See Service Instruction SI-914-022 current issue;
e – Only for P/N 966741 (version 4.6);
f – For authorized distributors only;
g – Connector cable, wiring harness P/N 966492 with sensor P/N 274051. See Service Instruction SI-914-022;
h – Non-certified part

B – Loctite 243
C - Loctite 648
L – Klueber Isoflex Topas Nb5051
O – Engine Oil

a - Thread 3/4-16 UNF for oil filter 3 mm extended, Introduced as per following engine 912 UL 4,407.160, 912 ULS 5,644.742, 914 UL 4,419.026;
b – With optimized spring routing;
c – see SI-912-020/914-022

B – Loctite 243
C – Loctite 648
L – Klueber Isoflex Topas Nb5051
P – Loctite 5910

A – For version 2 with narrow dog gear (22 mm / 0.87 in.)
B – For version 3 with narrow dog gear (22 mm / 0.87 in.)
C – For version 4 with narrow dog gear (22 mm / 0.87 in.)
D – For version 2 with wide dog gear (27 mm / 1.06 in.); For 914 use only from following engine S/N 914 UL: 4,417.791
E – For version 3 with wide dog gear (27 mm / 1.06 in.); For 914 use only from following engine S/N 914 UL: 4,417.791
F – For version 4 with wide dog gear (27 mm / 1.06 in.); For 914 use only from following engine S/N 914 UL: 4,417.791
G – Replacement for 887701 with wide dog gear
H – Replacement for 887706 with wide dog gear
I – Replacement for 887711 with wide dog gear
J – Replacement for 887680 with wide dog gear
K – Replacement for 888565 with wide dog gear

a – Drive gear 22 T. and reduction gear 50 T. are paired and must be replaced together and marked with S/N. See SL-912-002 resp. SL-914-002.
b – Drive gear 21 T and reduction gear 51 T. are paired and must be replaced together and marked with S/N. With wide dog (27 mm / 1.06 in.); See SL-912-002 respr. SL-914-002; For 914 use only from following engine S/N: 912 ULS starting with serial production, 914 UL: 4,417.791
c – For model 2 marked with S/N
d – For model 3 marked with S/N
e – For model 4 marked with S/N
f – For gear sets P/N 886125 and 886517 (narrow versions)
g– For gear set P/N 886518 (wide version)
h – Drive gear 21 T. and reduction gear 51 T. are paired and must be replaced together and marked with S/N. With thin dog gear (22 mm / 0.87 in.); See SL-912-002 resp. SL-914-002; For 914 use only up to S/N 914 UL: 4,417.790
i – Do not use at version with auxiliary alternator; only available as a set (includes 6 pieces)
j – Only when a governor is used
k – Version without governor: 2x940.591; with governor: see chapter 61.20.00
l – Dog hub with extended hub
m – With additional bores to drain lead
n – Increased support bearing diameter
o – See SL-912-002 current issue

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)