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Discussion Starter #1
Hi, new to forum and just bought a basket case '94 xcr 440 sp. Installed new pistons,rings,bearings,and other required parts. Primary looked good but has a white spring. Weights are unknown at this time. My issue is this, Starts hard(about 8-10pulls) idles erratic anywhere from 2500-3500, engages @ 5,000 and pulls hard once engagement is reached, then no bog. When you let back to idle it wants to die, feather the throttle and it idles erratic again @ about 2-3,000 rpm's. Any ideas????
 

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Pine River, MN- I live just a few miles north of Pine River! Welcome to the forum. First thing I would check on your sled is the idle circuits in the carbs- pilot jets, air screw setting, needle and seats.
 

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Discussion Starter #5
Went thru carbs and adjusted the air screws to 1 1/2 out. Also adjusted the choke plungers. Started a lot easier and idle is down to around 1800. Still not 100% though. What do people run for mains in these usually? Mine has 360's in it.Seems to rich to me.
 

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290 or 280 are more like it for that sled.
 
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