Yamaha F6A, F8A, T8A manual 114

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EMU01204¯

TROUBLESHOOTING

A problem in the fuel, compression, or ignition systems can cause poor starting, loss of power, or other problems. The troubleshooting chart describes basic checks and possible remedies. (This chart covers all Yamaha outboard motors. Therefore, some items may not apply to your model.)

If your outboard motor requires repair, bring it to a Yamaha dealer.

Trouble		Possible Cause		Remedy
	1.	Battery capacity weak or low.	1.	Check battery condition. Use battery of
				recommended capacity.
	2.	Battery connections loose or corroded.	2.	Tighten battery cables and clean bat-
				tery terminals.
A. Starter will not	3.	Fuse for electric start circuit blown.	3.	Check for cause of electric overload
				and repair. Replace fuse with one of
operate.				correct amperage.
	4.	Starter components faulty.	4.	Have serviced by a Yamaha dealer.
	5.	Engine stop switch lanyard not	5.	Attach lanyard.
		attached.
	6.	Shift lever in gear.	6.	Shift to neutral.
	1.	Fuel tank empty.	1.	Fill tank with clean, fresh fuel.
	2.	Fuel contaminated or stale.	2.	Fill tank with clean, fresh fuel.
	3.	Fuel filter clogged.	3.	Clean or replace filter.
	4.	Starting procedure incorrect.	4.	Read “STARTING ENGINE” section.
	5.	Fuel pump malfunctions.	5.	Have serviced by a Yamaha dealer.
	6.	Spark plug(s) fouled or incorrect type.	6.	Inspect spark plug(s). Clean or replace
				with recommended type.
B. Engine will not start	7.	Spark plug cap(s) fitted incorrectly.	7.	Check and re-fit cap(s).
(Starter operates).
	8.	Poor connections or damaged ignition	8.	Check wires for wear or breaks.
		wiring.		Tighten all loose connections.
				Replace worn or broken wires.
	9.	Ignition parts faulty.	9.	Have serviced by a Yamaha dealer.
	10.	Engine stop switch lanyard not	10.	Attach lanyard.
		attached.
	11.	Shift lever in gear.	11.	Shift to neutral.
	12.	Engine inner parts damaged.	12.	Have serviced by a Yamaha dealer.

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