Yamaha F2.5A Owner's Manual

Also see for F25A: Service manual Owner's manual Service manual Service manual Owner's manual

Contents

Trouble Recovery82EMU39524TroubleshootingThis section describes the likely causes andremedies for problems, such as those in thefuel, compression, and ignition systems, poorstarting, and loss of power. Please note thatall of the items in this section may not applyto your model.If your outboard motor requires repair, bringit to a Yamaha dealer.Engine will not start.Q. Is fuel tank empty?A. Fill tank with clean, fresh fuel.Q. Is fuel contaminated or stale?A. Fill tank with clean, fresh fuel.Q. Is fuel filter clogged?A. Clean or replace filter.Q. Is fuel pump malfunctioning?A. Have serviced by a Yamaha dealer.Q. Is spark plug fouled or of incorrect type?A. Inspect spark plug. Clean or replace withrecommended type.Q. Is spark plug cap fitted incorrectly?A. Check and re-fit cap.Q. Is spark plug wiring damaged or poorlyconnected?A. Check wires for wear or breaks. Tighten allloose connections. Replace worn or brokenwires.Q. Are electrical parts malfunctioning?A. Have serviced by a Yamaha dealer.Q. Is clip on engine shut-off cord (lanyard) in-stalled?A. Install clip to engine shut-off switch.Q. Are engine inner parts damaged?A. Have serviced by a Yamaha dealer.Engine idles irregularly or stalls.Q. Is fuel system obstructed?A. Check for pinched or kinked fuel line orother obstructions in fuel system.Q. Is fuel contaminated or stale?A. Fill tank with clean, fresh fuel.Q. Is fuel filter clogged?A. Clean or replace filter.Q. Are electrical parts malfunctioning?A. Have serviced by a Yamaha dealer.Q. Is spark plug gap incorrect?A. Replace spark plug.Q. Is spark plug wiring damaged or poorlyconnected?A. Check wires for wear or breaks. Tighten allloose connections. Replace worn or brokenwires.Q. Is specified engine oil not being used?A. Check and replace oil with specified type.Q. Is thermostat malfunctioning or clogged?A. Have serviced by a Yamaha dealer.Q. Are carburetor adjustments incorrect?A. Have serviced by a Yamaha dealer.Q. Is fuel pump malfunctioning?A. Have serviced by a Yamaha dealer.Q. Is air vent screw tightened?