Tune up interval on Force 15 hp

pecheux

Lieutenant Junior Grade
Joined
Jun 9, 2006
Messages
1,200
Good day Y'awl, (lol)

I have been using this 1997 Force 15hp OB for 3 years now without changing plugs nor doing any decarb. (It was just about new when I got it) Burned approx 5 tanks per year (short season in Canada) using Amsoil HP Injection synthetic oil. Trolling at idle 90% of the time.

How would I know it would need new plugs ? or decarb ? I have read Merc and Force will build carbon faster when idling ... is there a time table for such maintenance ?

Da 1981 Johnson 9.9 has a little more hours on it ... and is still untouched by human hands ... LOL

Thank
 
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