The 1999 model, 90 hp Mercury outboard requires an NGK BUHW-2 spark plug, standard plug wires are acceptable.
100 hp searay
For a 2005, Mercury 3.3 hp outboard, a NGK BPR6HS.
The spark plugs on a 1999 Mercury Cougar are located under the cover of the engine. The spark plugs should be changed approximately every 60,000 miles.
carburetor or spark plugs
The spark plugs on a 1999 Mercury Cougar are located under the cover of the engine. The spark plugs should be changed approximately every 60,000 miles or so.
A V6 engine in a Mercury Sable takes ( 6 spark plugs )
The correct spark plug gap for the 2004 model, 40 hp Mercury outboard 2 stroke is .040 in.
Stator is bad witch is under your fly wheel or bad switch board that send power to spark plugs
For a 2000 model: The Spark Plug (1) is located in the rear of the engine (opposite the pull start), beneath the gas tank. There is an access hatch. It can also be seen apon removal of the upper engine housing cover.
The spark plugs are actually located under the manifold on the top of the engine 3 in front and 3 in back....
how to change spark plugs on a 97 mercury mountaineer
Hi, it depends on the serial number of you engine. the only information i have is for serial numbers above EUROPE:9157229 USA:4709592 spark plug: AC-V40FFK OR CHAMPION L78V Regards john