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February 22nd, 2007, 07:48 AM   #1
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From: High Plains of Colorado USA

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High Altitude Jetting - 2002 FE501

Is there a link or download that provides high altitude jetting specs for an 02' FE 501 (Dellorto 40mm)? I live at 6K Feet, but ride primarily at 7K-10K Feet here in Colorado, with one or two side trips a season to Moab, UT (5K Feet). So I would estimate an 8K Feet setup to be the best compromise. The bike has stock air intake and exhaust setup.
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February 22nd, 2007, 08:09 AM   #2
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If all is well with your current state of tune @ sea level 6K feet is about maximum.

To tune for higher elevation use most any tuners guide. Remember, Delortto main jets are rated in diameter as opposed to that of flow.

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February 22nd, 2007, 01:24 PM   #3
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down 10 on the main jet and possibly lift the needle one clip to make richer (at a guess! then set the idle screw by testing - you know, you get off your arse and try two or three different touches with the screw driver and stick it in the memory bank.


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2002, altitude, fe501, high, jetting

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