1990-1998 Arctic Cat Snowmobiles Repair Manual, Page 136Get this manual
126 Before adjusting the carburetor, make the following adjustments as described in Chapter Three: acarburetor adjustment (including synchronization)boil pump adjustmentNOTE Changes in the ports (shape or smoothness), expansion chamber or carburetor will also require jetting changes because these factors alter the engine's ability to breatheAftermarket equipment manufacturers or engine modifiers usually provide adjustment information so the engine will operate at peak peifomanceThis information should be taken into account along with altitude and temperature conditions previously mentionedNOTE It is important to note that the following jetting guidelines should be used as guidelines onlyIndividual adjustments
CHAPTER FOUR
will vary because of altitude, temperature and snow conditionsThe condition of the spark plugs should be used as the determining factor when changing jets and adjusting the carburetor