All service manuals are sadly not available but if anything is missing on this page it may be available on the Swedish page.
Service manuals for Volvo Amazon (and relevant other Volvo models)
Part 0 (03): Specifications P220. TP 10188/1 2000.8.65. 23 pages.
Part 1: Lubrication P120 P1800. TP 10416/1 9500.6.68. 20 pages.
Part 1 (11): 10000km Service (6000mi). TP 10639/1 400.10.70. 44 pages.
Part 2A: Engine B16A. 56 pages.
Part 2D: Engine B16B. 24 pages.
Part 2A: Engine B18A. TP 10402/1A 10000.1.68. 67 pages.
Part 2B: Engine B18D B18B. TP 10115/2A 5000.2.69. 34 pages.
Part 2: Engine B20A B20B. TP 10516/1 8000.6.69. 78 pages.
Part 3: Electrical System P120 6V. 28 pages.
Part 3: Electrical System P120 12V. TP 10566/1 5000.10.70. 83 pages.
Part 3 (32): Alternator Equipment 12V (SEV Motorola). TP 10453/1 8000.8.68. 13 pages.
Part 4 (41): Clutch 120 140 1800. TP 10055/3 5000.12.69. 26 pages.
Part 4 (43): Gearbox M30 M40 120 140. TP 10526/1 5000.8.69. 21 pages.
Part 4 (43): Gearbox M40 M41 P1800. TP 10133/1A 5000.4.65. 18 pages.
Part 4 (43A): Overdrive 120 140 1800. TP 10125/2A 5000.5.68. 22 pages.
Part 4 (43B): Overdrive Type J. TP 10487/1 5000.5.69. 21 pages.
Part 4 (44): Automatic Transmission BW35 P120. TP 10023/2 2000.8.65. 40 pages.
Part 4 (45): Propeller Shaft 120 140 1800. TP 10373/1 10000.11.67. 11 pages.
Part 4 (46): Rear Axle (Spicer M27) P120 P130 PV544 P1800. TP 10075/1 5000.10.64. 24 pages.
Part 4 (46): Rear Axle (Spicer). TP 10307/1 8000.10.67. 28 pages.
Part 5: Brakes (Disc Brakes) P120 P1800. TP 10053/2A 3000.9.66. 31 pages.
Part 5: Brakes (Drum Brakes) P120. TP 10092/1 5000.11.64. 32 pages.
Part 6: Front End and Steering Gear P120 P1800. TP 10094/1A 5000.11.64. 32 pages.
Part 7: Springs, Shock Absorbers, Wheels 120 1800. TP 10099/2A 5000.8.69. 22 pages.
Part 8: Body 120-series. TP 10176/1 5000.11.65. 32 pages.
Part 9 (91, 94): Instruments, Heater System P120. TP 10222/1 5000.4.66. 16 pages.