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Yamaha V150 WARNING, Greasing, Cleaning and adjusting spark plug

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Maintenance

EMU28931

Greasing

Yamaha marine grease (Water resistant grease)

V150

ZMU04675

EMU28952	sparks, which could lead to explosion or

Cleaning and adjusting spark plug	fire.

EWM00560

WARNING

When removing or installing a spark plug, be careful not to damage the insulator. A damaged insulator could allow external

The spark plug is an important engine component and is easy to inspect. The condition of the spark plug can indicate something about the condition of the engine. For exam-

Contents

U.S.A.Edition LIT-18626-06-99 Page To the owner Page Page Identification numbers record Emission control information Manufactured: Star labels Safety information Important labels Basic boating rules (Rules of the road) Rules when encountering vessels Other special situations Fueling instructions Battery requirement Propeller selection Start-in-gearprotection Main components Remote control lever Neutral interlock trigger Neutral throttle lever Choke switch Throttle friction adjuster Engine stop lanyard switch Main switch Choke knob for pull type Power trim and tilt switch on remote control or tiller handle Power trim and tilt switch on bottom engine cowling Trim tab with anode Top cowling lock lever (pull up type) Tilt support lever for power trim and tilt or hydro tilt model Flushing device Tachometer Digital tachometer Oil level indicators (three indicators 2) Oil level indicator (digital type) Overheat warning indicator (digital type) Speedometer (digital type) Trim meter Trim meter (digital type) Hour meter (digital type) Trip meter Clock Fuel gauge Warning system Oil level warning and oil filter clogging warning Page Installation Breaking in engine Preoperation checks Filling fuel and engine oil Page Oil level indicator operation Operating engine Page Warming up engine Shifting Stopping engine Trimming outboard motor 1 UP Tilting up and down Procedure for tilting down Cruising in shallow water Cruising in other conditions Specifications Transporting and storing outboard motor Page Lubrication (oil injection models) Battery care Flushing power unit Cleaning the outboard motor Periodic maintenance Maintenance chart Page Greasing Cleaning and adjusting spark plug Checking fuel system Inspecting fuel filter Cleaning fuel filter Inspecting idling speed Checking water in engine oil tank Checking wiring and connectors Exhaust leakage Water leakage Checking power trim and tilt system Checking propeller Removing the propeller Installing the Propeller Changing gear oil Inspecting and replacing anode(s) Checking battery (for electric start models) Connecting the battery Disconnecting the battery Checking top cowling Coating the boat bottom Troubleshooting Page Page Temporary action in emergency Power trim and tilt / power tilt will not operate Starter will not operate OFF ON START Engine fails to operate Treatment of submerged motor Page Important warranty information for U.S.A. and Canada Page YAMAHA MOTOR CORPORATION, U.S.A. OUTBOARD MOTOR TWO YEAR LIMITED WARRANTY Page Page IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE USA OR CANADA Page Page OUTBOARD MOTOR WARRANTY REGISTRATION ENREGISTREMENT DE LA GARANTIE DU MOTEUR HORS-BORD ATTN: WARRANTY DEPARTMENT