PERIODIC MAINTENANCE 1. Connect the hoses as shown above (Figure 9) . 2. Remove the plug from the upper case cover (Figure 9, (1)) . 3. Operate the pump to fill the Sail-Drive with oil. Be aware that oil has to flow down through restricted parts of the casing and then back up again, so pressure will initially be high and pumping will be difficult. Pausing for a few minutes will help. The hand pump and rubber hose are available from Yanmar, and are optional parts for SD50 / SD50-4T. Any type of hand pump or rubber hose (inner diameter 14 to 16 mm [0.5 to 0.625 in.]) available locally can be used. 4. After filling, first screw in and tighten the plug at the top cover.
Then remove the hand pump, hose and adapter joint and screw in the oil plug with a gasket. Not Using Pump Refer to Filling With Lubricating Oil - SD20, SD50 and SD50-4T on page 19 . When The Vessel Is Out Of The Water Preparing The Sail-Drive (1) Figure 10 1 Plug 0005457 1. Remove the bottom drain plug. 2. Screw in the adapter joint with the O-ring. When using own adapter joint, maximum length of thread is 12 mm. 3. Attach a stiff rubber hose with an inner diameter of 14 to 16 mm (0.5 to 0.625 in.) with hose clamps to the adapter joint at the oil drain position. The hose must be long enough to drain to the bucket. 4. Remove the dipstick and oil inlet plug from the upper case cover.
SD Operation Manual 45 © 2009 Yanmar Marine International