Trouble Recovery56EMU29422TroubleshootingA problem in the fuel, compression, or ignitionsystems can cause poor starting, loss of pow-er, or other problems. This section describesbasic checks and possible remedies, and cov-ers all Yamaha outboard motors. Thereforesome items may not apply to your model.If your outboard motor requires repair, bring itto your Yamaha dealer.If the engine trouble warning indicator is flash-ing, consult your Yamaha dealer.Starter will not operate.Q. Is battery capacity weak or low?A. Check battery condition. Use battery of rec-ommended capacity.Q. Are battery connections loose or corrod-ed?A. Tighten battery cables and clean batteryterminals.Q. Is fuse for electric start relay or electric cir-cuit blown?A. Check for cause of electric overload andrepair. Replace fuse with one of correct am-perage.Q. Are starter components faulty?A. Have serviced by a Yamaha dealer.Q. Is shift lever in gear?A. Shift to neutral.Engine will not start (starter operates).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 starting procedure incorrect?A. See page 26.Q. Has fuel pump malfunctioned?A. Have serviced by a Yamaha dealer.Q. Are spark plug(s) fouled or of incorrecttype?A. Inspect spark plug(s). Clean or replace withrecommended type.Q. Are spark plug cap(s) fitted incorrectly?A. Check and re-fit cap(s).Q. Is ignition wiring damaged or poorly con-nected?A. Check wires for wear or breaks. Tighten allloose connections. Replace worn or brokenwires.Q. Are ignition parts faulty?A. Have serviced by a Yamaha dealer.Q. Is engine stop switch lanyard not at-tached?A. Attach lanyard.Q. Are engine inner parts damaged?A. Have serviced by a Yamaha dealer.Engine idles irregularly or stalls.Q. Are spark plug(s) fouled or of incorrecttype?A. Inspect spark plug(s). Clean or replace withrecommended type.Q. Is fuel system obstructed?