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November 7th, 2015, 01:04 PM   #11
Junior Member
Joined: Oct 2015
From: slovak

Posts: 7
Thanks: 0

I Ride:
Ok, thank you, but Why the engine is very hot after 5 minutes from start and the water is boiled ?

Is the FP tuned exhaust ? Or is it stock exhaust because in the manual is Main jet 182
Pilot jet 40 (I have 40, 42, 45) and Needle OBDVR 5th from the top, but when I set from the manual the spark plug is yellow.

When I set the Needle on the 4th from the top and use 42 Pilot jet and 182 Main jet i don't destroyed my engine ?

And last question is :

My set is 182 Main Jet and 42 Pilot jet and 6th from the top and when its dark and I turn 1/4 a gas I see hot and red Exhaust collector, Why ? Because it is a very poor mixture ? BUT Spark plug has very good brick color .

And How many turns on the mixture screw ? I use 2,5 turns

Thank you very much .
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Is it Fe650 or Fe550?-p51020-173603.jpg  

Last edited by Gabki; November 7th, 2015 at 01:28 PM.
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November 7th, 2015, 11:53 PM   #12
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Joined: Nov 2001
From: Ely, England

Posts: 16,064
Thanks: 503

I Ride: Husaberg FE501e 2003
never go by the plug colour.

unleaded fuels ruin this old way of doing things.

most of your combustion is probably taking place in the exhaust. it is so rich....

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