Rotax MAX Drivetrain — 2025 Illustrated Reference

2025 Rotax MAX drivetrain and balance shaft illustrated parts drawing

Use the numbered 2025 Rotax MAX drivetrain drawing to find a part. Check your engine model, year and part number before ordering. This reference covers Senior, Junior, Mini and Micro MAX engines shown in the 2025 catalog.

Click the drawing to enlarge it. Parts and lubricant in the drawing are for reference; they are not included with other products.

Quantities below are parts per engine, not package sizes. Contact us when a part has no direct link.

Item Rotax part Description Qty per engine Notes
#1 685096 CRANKSHAFT ASSY. — contact us to confirm 1
#2 XXX BALL BEARING 6206 TVH C4M — Rotax 832583 2 See Chap. 1
#3 237948 BALANCE SHAFT 1
#4 XXX BALL BEARING 6206 TN9/C — see chapter 1 1 See Chap. 1
#5 XXX BALL BEARING 6005 TNH C3 — see chapter 1 1 See Chap. 1
#6 XXX OIL SEAL AS 28x38x7 NBR — Rotax 230425 1 See Chap. 1
#7 430460 O-RING DIN 3771-18X3.5-N. NBR 70 1
#8 234435 BALANCE GEAR 50 T 2
#9 635850 WATER PUMP GEAR 19 T 1
#10 945664 RETAINING RING WITH LUG DIN 983-20X1.2 2
#11 827590 THRUST WASHER 10.1/17/1 — contact us to confirm 1
#12 232732 NEEDLE PIN B 4X15.8 G2 DIN 5402-3 1.3505 1
#13 234415 WATER PUMP PINION 16 T 1
#14 XXX LOCATING PIN 8 SMALL M6x40 — Rotax 229380 1 See Chap. 1
#15 634035 IDLE GEAR 28/13 T. 1
#16 650476 GASKET 1
#17 211875 GEAR COVER — contact us to confirm 1 Black coated
#18 230415 SEALING RING A 6X10 DIN 7603 1
#19 840866 ALLEN SCREW ISO 4762 - M6x25 - 8.8 — contact us to confirm 6 Tightening torque 10 Nm
#20 840888 ALLEN SCREW ISO 4762 - M6x30 - 8.8 — contact us to confirm 2 Tightening torque 10 Nm
#21 932027 NEEDLE CAGE K 15X19X20 1
#22 295513 Rotax MAX Piston Assembly — 53.96mm 1 Ill. no. 22-23; Standard
#22 295514 Rotax MAX Piston Assembly — 53.97mm 1 Ill. no. 22-23; Oversize
#22 295515 Rotax MAX Piston Assembly — 53.98mm 1 Ill. no. 22-23; Oversize
#22 295512 Rotax MAX Piston Assembly — 53.95mm 1 Ill. no. 22-23; Standard
#22 295509 PISTON ASSY. 53.92 MM — contact us to confirm 1 Ill. no. 22-23; Smaller size
#22 295510 PISTON ASSY. 53.93 MM — contact us to confirm 1 Ill. no. 22-23; Smaller size
#22 295511 Rotax MAX Piston Assembly — 53.94mm 1 Ill. no. 22-23; Standard
#23 215548 RECTANGULAR RING IS2-54/49.4X1 1 Original with ROTAX logo
#24 216135 PISTON PIN 15X10/12.5X45.6 1
#25 945635 CIRCLIP 15 2 Use only once
#26 685011 CRANKSHAFT REPAIR KIT 1

Source: Rotax 2025 illustrated parts catalog, drivetrain and balance shaft. Piston sizes and other unlinked parts require confirmation before ordering.