Ref.

  P/N
  LOWER GEAR UNIT AQ DRIVE UNIT 270, 270T
DESCRIPTION
       Lower gear unit AQ drive unit 270, 270T
1      Lower gear unit, NSS (21) ratio 1.61:1
       Lower gear unit, NSS (22) ratio 1.89:1
    832701-7   Lower gear unit, NSS (23) ratio 2.15:1
    850788-1   Lower gear unit (24,32) ratio 2.15:1
2   854219-3   ...Thrust bearing
3   875433-5   ...Gear housing
4   832580-5   ......Exhaust outlet
5   959450-8   ......Screw
6   183497-7   ......Needle bearing
7      .........Washer,NSS
8   941812-0   ......Screw
9   854612-9   ...Interm shaft
10   183374-8   ...Ball bearing
11   941832-8   ...Shim, thickness = 0.05MM
    941833-6   ...Shim, thickness = 0.20MM
12   854674-9   ...Propeller shaft
13   183390-4   ......Needle bearing
14   11072-6   ...Bearing
15   897387-7   ...Clamp ring
16   907023-6   ...Washer
17   906633-3   ...Nut
18   814164-0   ...Nut
19   814165-7   ...Washer
20   854541-0   ...Ball bearing
21   907025-1   ...Washer
22   906635-8   ...Round nut
23   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
24   914474-2   ...Lock ring
25   814482-6   ...Oil strainer
26   832548-2   ...Centrifugal pump
27   832725-6   ...Washer
28   953449-6   ...Stud bolt
29   955825-5   ...Nut
30   925261-0   ...Gasket
31   875805-4   ...Zinc ring kit (832524)
32   940203-3   ......Screw
33   897426-3   ...Seal ring
34   839534-5   ...Ring
35      ...Propeller cone (44)
    854045-2   ...Propeller cone
35a   854047-8   ...Spacer washer (45)
36   897367-9   ...Washer
37   804262-4   ...Plug, up to 2785179 on drive gear unit
    852904-2   ...Plug, from 2785180 on drive gear unit
38   804261-6   ...Gasket, up to 2785179 on drive gear unit
    955974-1   ...Ring, from 2785180 on drive gear unit
39   850889-7   ...Screw
39a   850888-9   ...Washer
40   944522-2   ...Shim, thickness = 0.05MM
    42981-1   ...Spacer, thickness = 0.10MM
    42980-3   ...Spacer, thickness = 0.20MM
41   944970-3   ...Shim, thickness = 1.60MM
42   944561-0   ...Shim, thickness = 0.05MM
    944562-8   ...Shim, thickness = 0.10MM
    851767-4   ...Shim, thickness = 0.20MM
43   832191-1   ...Gasket
44   925256-0   ...Rubber ring
45   875183-6   Spline sleeve
46   914508-7   ...Lock ring
47   941810-4   Screw