ROTAX Engines & Parts

a - Width A/F 1, b - From 912 iS engine S/N 4417400 up to engine S/N up to 4417400, c - Width A/F 13

B – Loctite 243
C – Loctite 648

AR – As required

c – Cooling area 234 cm² / 36.27 sq. in.;
e – UNF connections

a – Marked with S/N

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

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

B – Loctite 243
E – Anti-Seize
I – Lithium-Base Grease
O – Engine Oil

a – From engine S/N 582 UL Mod. 90 5,236.549 piston for monohook circlip configuration (see also SI-2ST-001);
b – With 2 rings, standard;
c – With 2 rings, 1st oversize;
d – with 2 rings, 2nd oversize;
e – Standard size;
f – 1st oversize;
g – 2nd oversize; 
h – For use with piston Part No. 888 590 (Also see SI-2ST-001);
i – Use only once

L – Klueber Isoflex Topas Nb5051
O – Engine Oil

a – For gear sets P/N 886125, 886517; thin dog gear (22 mm / 0.87 in.)
b – For gear set P/N 886518; wide dog gear (27 mm / 1.06 in.)
c – With additional bores to drain lead
d – Option for 912 UL fitted with 2,43 gear set

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

C – Loctite 638
L – Klueber Isoflex Topas Nb5051
O – Engine Oil

AR – As required

a – For cylinder 2 and 3;
b – For cylinder 1 and 4;
c – Up to engine S/N 912 UL: 4,401.879, 914 UL: 4,417.597, single valve springs and double valve springs if required are allowed to be mounted in one engine;  
d – From engine S/N 912 UL: 4,401.880, 914 UL: 4,417.598;
e – With sintered bronze bushing;
f – Oversize +0.2 mm (0.008 in.);
g – Rocker arm version with vespel bushing, from engine S/N 912 UL: 4,404.621, 912 ULS: 4,427.487, 914 UL: 4,418.104;
h – For inlet valve, chafe up to new measurement;
i –  For outlet valve, chafe up to new measurement;
j – Use only once!;
k – For rework of exhaust port. See Overhaul Manual of the respective engine type, current issue;
l – Marked with S/N;
m – Without worm gear;
n – Prefilled, 8 parts per set;
o – Cylinder heads where the coolant temperature is measured.
p – see SI-914-30