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BOTH plugs should be a dark dry brown color. Black and oily isn't good, but neither is gray! Gray means WAY too lean or metal transfer! Make sure the choke isn't sticking open on the rich carb.
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1992 Ski Doo Mach 1 (SC-10/2 suspended) March '07 SF.com Sled of the Month!
1993 Ski Doo Mach Z 780 triple
2001 Ski Doo Mini Z
Evergreen Valley Snowmobile Club Webmaster
If I'm not home, CHECK THE TRAILS!
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