BEFORE YOU OPERATE DAILY CHECKS Before starting the Sail-Drive, make sure it is in good operating condition. Make sure you check the following items: Visual Checks 1. Check for damaged or missing parts. 2. Check for loose, missing or damaged fasteners. 3. Check oil level. See Filling With Lubricating Oil - SD20, SD50 and SD50-4T on page 19 . 4. Open cooling water cock before operation. Drain cooling water and close cooling water cock after operation. See Engine Cooling Water on page 29 NOTICE: If any problem is noted during the visual check, the necessary corrective action should be taken before you operate the engine. SD Operation Manual 23 © 2009 Yanmar Marine International