Johnson Outboard Spark Plugs Chart. Spark Plugs the Engine Igniter John's Motorcycle News Re: Correct spark plug for 40HP Johnson Inductive supressor plug 'Q' is fine, whether or not OMS/VRO is used or not On ALL VRO/OMS equipped motors the "QL" supressor plug is recommended
How to Read Your Spark Plugs YourMechanic Advice from www.yourmechanic.com
On ALL VRO/OMS equipped motors the "QL" supressor plug is recommended we have found that the surface-gap plugs, while lasting longer, seem to have a slight performance hit over the standard plugs.
How to Read Your Spark Plugs YourMechanic Advice
When more than one plug number appears, the first plug listed is the prefered. Spark Plug Application Chart for Evinrude & Johnson Outboards 1952 thru 2007 * This chart was assembled with the latest available Parts Catalogs, Service Manuals and Service Bulletins as of the * This chart was assembled with the latest available Parts Catalogs, Service Manuals and Service Bulletins as of the
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2 Stroke Spark Plug Reading Chart. On ALL VRO/OMS equipped motors the "QL" supressor plug is recommended we recommend ngk instead, and traditional electrode-gap rather than surface-gap plugs where possible