Yamaha 9.9 Four stroke outboard

john-206

Cadet
Joined
Nov 12, 2005
Messages
25
Just found out my Yamaha 9.9 Four-stroke takes NGK CR6HS spark plugs.<br /><br />Can anyone tell me what the plug gap should be set at please?
 

bossee

Senior Chief Petty Officer
Joined
Jul 18, 2002
Messages
727
Re: Yamaha 9.9 Four stroke outboard

Hi,<br /><br />If You go to Yamaha US website You can have a look in the Owners manual available there in PDF (You can view it but not print it).<br /><br /> Link <br /><br />For example in the manual for 2005 F9.9 4-stroke they mention:<br />NGK CR6HSA with gap 0.6-0.7 mm / 0.24-0.28 inch.<br /><br />You can view Owners manuals back to 1998 on Yamaha US website.<br /><br />Hope it helps.<br /><br />/Bo
 
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