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post #1 of 5 (permalink) Old 01-05-2010, 08:51 AM Thread Starter
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1987 Arctic cat Jag 340

HEy Guys I need to clear up some information on my arctic cat jag 340 Carb. I have looked on the parts websites for my year sled and carb and it says a main jet of 300... The chart on the sled itself says there is a stock 200 main jet in the carb and shows different latitudes and different main jet sizes. Which jet size is the correct one? I would like to know this because I have the air box removed and it seems like the sled is not getting enough fuel at WOT. Thanks
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post #2 of 5 (permalink) Old 01-05-2010, 09:24 AM
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With the airbox removed the sled will run leaner as the restriction of the airbox isn't there... Put the airbox back, its there for a reason. Otherwise you'll need to go up in jet size but you'll need to figure out what jet on your own, theres no published number for the airbox being removed.

I think you ment altitude, latitude shouldn't have much effect on the carb. At higher altitudes the air gets thinner and for reasons I don't really understand you need to go to a larger jet. My 500cc '85 Panther wanted a 300 above 5,000 feet.

Raising sleds from the dead in north central MA.
'70 Ski-Doo Olympique 12/3 - The Yellow Bullet
'71 Arctic Cat Panther 303 - Wankle Panther
'78 Arctic Cat Pantera 5000 - Back from the dead!
'79 Polaris Cobra 340 - Back from the dead!
'95 Ski-Doo Grand Touring SE 670



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post #3 of 5 (permalink) Old 01-05-2010, 05:43 PM Thread Starter
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Yeah I meant altitude lol.... The air box was removed when i picked up this sled. I am just worried about the difference in main jet sizes that the chart on the sled gives me and the actual parts diagram 200 and 300 are a huge difference. I was hoping someone with this year sled could let me know what they think thanks!
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post #4 of 5 (permalink) Old 01-05-2010, 06:32 PM
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Once the airbox is off the chart is meaningless... Run it and inspect the plugs, adjust the jet size as needed.

Raising sleds from the dead in north central MA.
'70 Ski-Doo Olympique 12/3 - The Yellow Bullet
'71 Arctic Cat Panther 303 - Wankle Panther
'78 Arctic Cat Pantera 5000 - Back from the dead!
'79 Polaris Cobra 340 - Back from the dead!
'95 Ski-Doo Grand Touring SE 670



www.deadsledwrenchers.net
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post #5 of 5 (permalink) Old 01-05-2010, 06:58 PM Thread Starter
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Yeah I understand this I am not going by the chart to change my jet size with the air box removed. I am just trying to figure out what is the size of the stock main jet. I know how to do a plug chop but I want to purchase jets that are in the right range. Like i said Arctic cats parts page says main jet 300 Babbitts Sports Center | Arctic Cat OEM Parts | Can-Am (Bombardier) OEM Parts | Honda OEM Parts | Kawasaki OEM Parts | Polaris OEM Parts | Sea-Doo OEM Parts | Ski-Doo OEM Parts | Suzuki OEM Parts | Yamaha OEM Parts
My chart on the sled says stock is 200....
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