Merc 50 hp spark plugs

[Jason H Thomas]

I have an 86 or 87 model merc classic 50 sn 0B170676. It has surface gap plugs in it right now. I was wondering if these are good for what i am doing . Basically running motor for 10 to 20 minutes at a time, most of my day on the water is spent fishing. I would like to know what NKG or Champion plugs to put in and the gap. Its gettting hard to start at times and i thought new plugs couldnt hurt. Thanks.

 

[greasemonkeyozi]

Re: Merc 50 hp spark plugs

My advise is that like any motor, your motor should have a special heat range, and gap settings. Most spark plugs you buy that fit your engine, the manufacturers already set the gaps for you. I'm a mechanic on cars, and very seldome I run accross sparkplugs that needs the gap reset. and if you just run it short periods of time, hotter heat ranges shouldnt hurt.<br /> Chances are, When you buy plugs that fit your engine now days, the gaps already set. <br /> Hope this helped.

 

[NathanY]

Re: Merc 50 hp spark plugs

That motor calls for L76v per Mercury. That is a surface gap plug, do not put regular plugs in that motor. Use only what Merc calls for.

 

[izuizme]

Re: Merc 50 hp spark plugs

when your right your right... STICK with the recommended plugs

 

[OhNoMrBill1960]

Re: Merc 50 hp spark plugs

Hello KoKo,<br /><br />Check out the link to NGK I have found it very helpful in the past. It will tell you if there are alternate NGK plugs to use.<br /> http://www.ngksparkplugs.com/apps/default.asp?nav=60000&country=US <br /><br />Good luck