Yamaha F75D Ower's Manual

Contents

Maintenance40Procedure1. Disconnect and remove the battery fromthe boat. Always disconnect the blacknegative cable first to prevent the risk ofshorting.2. Clean the battery casing and terminals.Fill each cell to the upper level with dis-tilled water.3. Store the battery on a level surface in acool, dry, well-ventilated place out of di-rect sunlight.4. Once a month, check the specific gravityof the electrolyte and recharge as re-quired to prolong battery life.EMU28440Flushing power unitPerform this procedure right after operationfor the most thorough flushing.1. After shutting off the engine, unscrew thegarden hose connector from the fitting onthe bottom cowling.2. Screw the garden hose connector onto agarden hose which is connected to afresh water supply.3. With the engine off, turn on the water tapand let the water flush through the cool-ing passages for about 15 minutes. Turnoff the water and disconnect the gardenhose.4. When flushing is complete, reinstall thegarden hose connector on the fitting onthe bottom cowling. Tighten the connec-tor securely.CAUTION:ECM00540Do not leave the garden hose connectorloose on the bottom cowling fitting or letthe hose hang free during normal opera-tion. Water will leak out of the connectorinstead of cooling the engine, which cancause serious overheating. Be sure theconnector is tightened securely on the fit-ting after flushing the engine.NOTE: When flushing the engine with the boat inthe water, tilting up the outboard motor untilit is completely out of the water will achievebetter results. For cooling system flushing instructions,see page 37.EMU28450Cleaning the outboard motorAfter use, wash the exterior of the outboardmotor with fresh water. Flush the cooling sys-tem with fresh water.1. Fitting2. Garden hose3. Garden hose connector