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glennyd

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Posts: 13
Reply with quote  #1 
I recently cleaned my 39mm FCR carb on my 525. I assembled it and installed soon to find a similar running behavior. Cold start with choke starts right up. It will run on choke for about a minute or so and then stall. If I take the choke off it will stall. Once it is warm the motor runs fine. I would expect the motor to run a little faster at idle when cold, but it runs rough and between 600 to 800 rpms (too low). I reinstalled the factory air filter because the K&N filter made the motor run erratic. I've adjusted the micro adjuster at the thumb control which seems to change the performance of the motor. I've dialed in the required free play that is spec'd. Not sure what else to do?? I forgot to mention this 2007 525 Outlaw IRS is completely stock with about 150hrs on the motor.
LEOGM5150

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Reply with quote  #2 
If you are that low on idle it really needs to be turned up to 1700 rpms or so using the idle knob on the carb. The throttle cable inline adjuster should only be used to get a good 1/8 to 1/4 inch slack at the the throttle not for idle rpm adjustment.
__________________
FROM: POWELL WYOMING USA

MY GREATEST FEAR IS THAT WHEN I DIE MY WIFE WILL SELL MY TOYS FOR WHAT I TOLD HER I HAVE INTO THEM...

2014 POLARIS RZR 4 900 EPS
2012 POLARIS RZR 4 900 XP
2008 POLARIS RZR 800
2008 POLARIS OUTLAW 525S LE
2007 POLARIS OUTLAW 525 IRS
2000 400 RCR TWO STROKE SCRAMBLER
2001 400 TWO STROKE SCRAMBLER
2005 SKI DOO 1000 TWO STROKE SAND SLED
glennyd

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Posts: 13
Reply with quote  #3 
Today I adjusted the valves, which seemed to be pretty close to spec. Re-gapped the spark plug and cleaned the air filter and oiled the filter. Put it all back together it started right up and seemed to run at high idle on choke until warm. I took off the choke and it idled just fine. Right now its running as if it came off the show room floor. Finicky thing....
LEOGM5150

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Posts: 15,429
Reply with quote  #4 
Very cool good work my man. Sometimes they just need a once over twice in a row.
__________________
FROM: POWELL WYOMING USA

MY GREATEST FEAR IS THAT WHEN I DIE MY WIFE WILL SELL MY TOYS FOR WHAT I TOLD HER I HAVE INTO THEM...

2014 POLARIS RZR 4 900 EPS
2012 POLARIS RZR 4 900 XP
2008 POLARIS RZR 800
2008 POLARIS OUTLAW 525S LE
2007 POLARIS OUTLAW 525 IRS
2000 400 RCR TWO STROKE SCRAMBLER
2001 400 TWO STROKE SCRAMBLER
2005 SKI DOO 1000 TWO STROKE SAND SLED
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