ROTAX 503 | 582 UL 99/17 ENGINE REDUCTION GEARBOX “C”: I=2,62, I=3,00, I=3,47 OR I=4,00

• a   replace layshaft gear 55 T and pinion shaft 21 T only together.
• b   replace layshaft gear 57 T and pinion shaft 19 T only together.
• c   replace layshaft gear 59 T and pinion shaft 17 T only together.
• d   replace layshaft gear 60 T and pinion shaft 15 T only together.
• e   NOTICE left-hand thread.
• f    coupling-flange 958-971 and oil-seal 950-084 has to be used together!
• g   coupling-flange 958-970 and oil-seal 950-085 has to be used together!
• h   gear set and splitted cone sleeve 847-757 has to be used together! see also SI-2ST-007

Explanations of symbols and statements in part number charts:

• N = Newly introduced part number
• s.v. = Still valid. Part was replaced by compatible component and can not be supplied any longer by the producer. Existing stock may be used.
• AR = As required. This generally refers to shims, hose, wires, and cable. Measure the amount you need before ordering. Many times there will be multiple listings of different lengths with the same part number. Use individual part descriptions to determine the proper length needed.
• n.a or NLA = No longer available, no replacement from Rotax. Part is no longer available due to incompatibility to current production or unavailability of part.