Ref.

  P/N
  LOWER GEAR UNIT AQ DRIVE UNIT 280, 280T
DESCRIPTION
1   839390-2   Lower gear unit, ratio 1.61:1
    839391-0   Lower gear unit, ratio 1.89:1
    839392-8   Lower gear unit, ratio 2.15:1
2   875523-3   Lower gear housing
3   851567-8   ......Steering fin (850012), up to 2862967 on drive gear unit
       ......Steering fin (46)(850492), from 2862968 on drive gear unit, up to 28004759 on drive gear unit
    854040-3   ......Steering fin, from 28004760 on drive gear unit
4   959422-7   ......Screw, up to 2862967 on drive gear unit L=32MM 1/4'' UNC
    959421-9   ......Screw, up to 2862967 on drive gear unit, L = 25MM 1/4''UNC
    959439-1   ......Screw, from 2862968 on drive gear unit
    959440-9   ......Screw, from 28004760 on drive gear unit
5   183497-7   ......Needle bearing
6   941812-0   ......Screw
7      ......Exhaust port (34), up to 2850005 on drive gear unit
8      .........Rubber lip, NSS
9      .........Plate, NSS
10      .........Rivet NSS
11   854044-5   ...Bearing housing
12   854612-9   ...Interm shaft
13   183374-8   ...Ball bearing
14   941832-8   ...Shim, thickness = 0.05MM
    941833-6   ...Shim, thickness = 0.20MM
15   832191-1   ...Gasket
16   944970-3   ...Shim, thickness = 1.60MM
17   11072-6   ...Bearing
18      ...Shim, thickness = 0.05MM
    42981-1   ...Spacer, thickness = 0.10MM.
    42980-3   ...Spacer, thickness = 0.20MM
19   897387-7   ...Clamp ring
20   907023-6   ...Washer
21   906633-3   ...Nut
22   814482-6   ...Oil strainer
23   854675-6   ...Propeller shaft
24   183390-4   ......Needle bearing
25   832624-1   ...Set of gears, ratio 1.61:1
    832628-2   ...Set of gears, ratio 1.89:1
    832632-4   ...Set of gears, ratio 2.15:1
26      ......Pin
27   814165-7   ...Washer
28   814164-0   ...Nut
29   832548-2   ...Centrifugal pump
30   914474-2   ...Lock ring
31   832725-6   ...Washer
32   953449-6   ...Stud bolt
33   955825-5   ...Nut
34   854541-0   ...Ball bearing
35   944561-0   ...Shim, thickness = 0.05MM
    944562-8   ...Shim, thickness = 0.10MM
    851767-4   ...Shim, thickness = 0.20MM
36   907025-1   ...Washer
37   906635-8   ...Round nut
38   897426-3   ...Seal ring
39   925261-0   ...Gasket
40   875815-3   ...Zinc ring
41   941809-6   ...Screw
42   839423-1   ...Ring
43   897367-9   ...Washer, early production
44   850889-7   ...Screw, late production
44a   850888-9   ...Washer, late production
45      ...Propeller cone
    854045-2   ...Propeller cone
45a   854047-8   ...Washer (45), from 2801597 on drive gear unit
46   852904-2   ...Plug
47   955974-1   ...Ring
48   925256-0   Rubber ring
49   875183-6   Spline sleeve
50   914508-7   ...Lock ring
51   941810-4   Screw