Yamaha 90A Owner's Manual

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Contents

Yamaha 90A Owner's Manual Manual pdf 61 page image

Maintenance554. Grease all grease fittings. For further de-tails, see page 61.TIP:For long-term storage, fogging the enginewith oil is recommended. Contact yourYamaha dealer for information about foggingoil and procedures for your engine.EMU28443Flushing power unitPerform this procedure right after operationfor the most thorough flushing.NOTICEECM01530Do not perform this procedure while theengine is running. The water pump maybe damaged and severe damage fromoverheating can result.1. After shutting off the engine, unscrewthe garden hose connector from the fit-ting on the bottom cowling.2. Screw the garden hose adapter onto agarden hose, which is connected to afresh water supply, and then connect itto the garden hose connector.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 adapter from the garden hose con-nector.4. Reinstall the garden hose connectoronto the fitting on the bottom cowling.Tighten the connector securely. NO-TICE: Do not leave the garden hoseconnector loose on the bottom cowl-ing fitting or let the hose hang freeduring normal operation. Water willleak out of the connector instead ofcooling the engine, which can causeserious overheating. Be sure the con-nector is tightened securely on thefitting after flushing the engine.[ECM00541]TIP:● When flushing the engine with the boat inthe water, tilting up the outboard motor un-til it is completely out of the water willachieve better results.● For cooling system flushing instructions,see page 53.EMU28450Cleaning the outboard motorAfter use, wash the exterior of the outboardmotor with fresh water. Flush the coolingsystem with fresh water.1. Fitting13 2ZMU046972. Garden hose connector3. Garden hose adapter