Yamaha F4 Service Manual
Also see for F4: Owner's manualOwner's manualBrochure & specsOwner's manualOwner's manual
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EIGNITION SYSTEMELEC0 5 10SERVICE POINTSIGNITION SPARK GAPw9When checking the spark gap, do nottouch any of the connections of the sparkgap tester lead wires.9When performing the spark gap test, takespecial care not to let sparks leak out ofthe removed spark plug cap.9When performing the spark gap check,keep flammable gas or liquids away,since this test can produce sparks.1. Check:9Ignition spark gapLess than specification Æ Continue tocheck the ignitor ass’y output.Checking steps:8 Remove the spark plugs from theengine.8 Connect the spark plug cap to thespark gap tester.8 Set the spark gap length on theadjusting knob.8 Crank the engine and observe theignition system spark through thedischarge window.8-6Spark gap tester:YM-34487/90890-06754SPARK GAP:9 mm (0.4 in) |
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