BEFORE YOU OPERATE Fitting a Fixed Propeller (2-Blade) (1) (4) (5) (6) (2) (3) 0005446 Figure 1 1 Spacer 2 Grease 3 Propeller 4 Washer 5 Nut * 6 Bolt ** Locking Procedure for Fixed Propeller Nut (Optional) When tightening the nut to 60 to 70 N·m (44 to 52 lb-ft) torque for the SD20, and 80 to 100 N·m (59 to 74 lb-ft) torque for the SD50 and SD50-4T, move the shift lever to ahead and hold the crankshaft V-pulley clamp nut with a wrench to stop the propeller rotating. SD Operation Manual 17 © 2009 Yanmar Marine International Size Tightening Torque * M16 (SD20) M20 (SD50, SD50-4T) 60 to 70 N·m (44 to 52 lb-ft) 80 to 100 N·m (59 to 74 lb-ft) ** M8 x 75 mm 11 to 15 N·m (8 to 11 lb-ft)