Sisu Diesel 320 420 620 634 Engine Workshop Repair Manual Covers the following Sisu Models: -Sisu 320 -Sisu 420 -Sisu 620 -Sisu 634 Engine type 320D 320DS 420D 420DS 420DW 420DWI 620D 620DS 634DS HIGH... Download 14.95 USD X The seller elsider offers you 6.0% on each sale!