ArcticCat439

We have a problem on are 1996 arctic cat cougar 550... When we start it up the sled runs normal but when we Try to drive it we have to half choke to get it to go. Idles fine, top end fine. Disassembled and cleaned caraburators but didnt help. Please help!!!!!

BC_Dan

Fuel delivery from idle to 1/8 throttle or so is a function of the pilot jet. Try turning in the air screws. The air screw controls the amount of air to the pilot jet. Normal would be one turn out from lightly seated. If it still won't go, turn in 1/8 of a turn each at a time until the bog goes away. If you seat the air screw and there is no change, you have a clogged airway to the pilot jet, the pilot jet is clogged, or the pilot jet is too small.

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Rebuilding the fleet!
2008 RMK 600 155", 2006 RMK 600 144", 98 Indy 440, 95 Prowler 550 2-up, 1990 Indy 650

RIP, destroyed by fire 1-22-2008
04 RMK 800, 05 RMK 600, 02 RMK 800, 97 RMK 700

kccats

The other thing is how do the plugs look? You could have an air leak leaning out the motor! Not good!

ArcticCat439

the spark plugs are fine and we already overlooked the air leak in the engine. We are going to try to adjust the pilot jet tomorrow when we get some free time. Hope to get this fixed before our snowstorm Monday. Thanks anyways.