My 2008 250 pro xs owners manual calls for a .032 spark plug gap but I noticed that Don recommends a. 042-.044 gap, should I use the .042 gap in lieu of the .032?
My 2008 250 pro xs owners manual calls for a .032 spark plug gap but I noticed that Don recommends a. 042-.044 gap, should I use the .042 gap in lieu of the .032?
Spark Plugs:
-QL77CC (Champion) for 3 Liter EFI's (.035" 2001 and prior and ALL 250XB, .040" 2002->)
-IZFR5G@ .032-.033" for Standard Opti's 135-225HP and 200 ProXS PRIOR TO Serial Number#1B912786
-IZFR5J @.032-.033 for 75-115 Opti's
-IZFR6J for 150, 175, 200 ProXS (Serial #1B912786-up) & 225-250 ProXS and Racing XS Motors
-2005 & prior: .032-.033"
-2006 & up: .042-.044" gap for best idle performance. (150/175/225/250 ProXS/XS)
- 250 XS/ProXS can use IZFR6J (gapped to .042-.044") OR IZFR6J-11 (pre-gapped, currently a "factory only" plug)
-2006 & up 225 ProXS: .042-.044"
-175 ProXS: .042-.044"
*** 200 ProXS Models manufactured PRIOR TO 2/1/12 utilize IZFR5G Plugs.
*** 200 ProXS Models manufactured AFTER 2/1/12 (Serial Number 1B912786 and later) will utilize IZFR6J (gapped at .042-.044") due to production changes in the engines.
-IZFR7M for 300XS: .044" Gap
You looked at the right year, right?
Last edited by BILLY; 06-11-2012 at 06:51 PM.
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