2014 Optimax Pro XS150

[Michael Stelly]

New owner of a 98 triton TR18 with a 2014 Pro XS 150, 2B113749. I replaced the spark plugs and noticed all 6 I removed were not gapped correctly. They were all set .030-.032”, was that the original specifications? What I read here was .042-.044”.

[SilverFox579]

Most likely the previous owner or a marine engine shop used the non-ProXS plug gap. From the FAQ topic - Oil, Battery, Spark Plugs, Fuel and Fuel Additive Recommendations

Spark Plugs:
-QL77CC (Champion) for 3 Liter EFI's (XB models or 2001 and EARLIER: .035" / All 2002-> Down-draft intake models: .040")
-IZFR5G (NGK)@ .032-.033" for Standard Opti's 135-225HP, 2001 200XS, and 200 ProXS PRIOR TO Serial Number#1B912786***
-IZFR5J (NGK) @.032-.033 for 75-115 Opti's
>>>-IZFR6J (NGK)for 150/175/200 ProXS (200 ProXS Serial #1B912786-up) & 225-250 ProXS and Racing XS Motors<<<
-2006 & prior ProXS: .032-.033"
>>>-2007 & up: .042-.044" gap for best idle performance. (150/175/225/250 ProXS/XS)<<<
- 2007 & up 225-250 XS/ProXS can use NGK- IZFR6J (gapped to .042-.044") OR IZFR6J-11 (pre-gapped, currently a "factory only" plug)
-2007 & up 225 ProXS: .042-.044" (IZFR6J)
-175 ProXS: .042-.044" (IZFR6J)
*** 200 ProXS Models manufactured PRIOR TO 2/1/12 utilize IZFR5G(NGK) Plugs.
*** 200 ProXS Models manufactured AFTER 2/1/12 (Serial Number 1B912786 and later) will utilize NGK- IZFR6J (gapped at .042-.044") due to production changes in the engines.

-IZFR7M (NGK) for 300XS: .044" Gap

[JOE54]

any black paint on those , likely were original , many shops dont have a clue about what to gap a plug at or how to do it theses days