Joined Nov 2012
170 Posts | 0+
Transilvania
Today I was busy with the bike all day. Last weekend I had a big fall with the bike so I had to repair a couple of things. Since I had time, I played with the carb a little as well. 1 and 1/4 turns seems to be when the bike will start with choke and also start hot with the e-start as well.
Am I at any risk of running too hot with that mixture???
It doesnt seem to be all that hot, I ran the bike in idle for 4 minutes straight and the coolant didnt boil.
Tom
Am I at any risk of running too hot with that mixture???
It doesnt seem to be all that hot, I ran the bike in idle for 4 minutes straight and the coolant didnt boil.
Tom
Joined Nov 2012
2K Posts | 821+
Iceland
from memory, that is within the range outlined in the manual for an '06 450 I was reading - check out the setup procedure for the idle adjuster in the owner's manual (downloadable at husaberg.com)
there is interpay between the idle adjuster and the fuel screw; generally you want the fuel screw adjusted such that you have the highest idle within a certain rpm range with the idle screw turned in as far as possible, and the fuel adjuster within a certain range of turns out; 1.25 turns is afaik good (not 100% sure, the dr-z is supposed to be further out / has a wider acceptable range, up to 3 turns). The general idea is that the fueling is best when the vacuum is the strongest, and then you need less turns out on the idle screw to get the correct idle. It's a process of back-and-forth on the two screws to find the sweet spot. The DR-Z has a crappy vacuum carb and has a rather slow throttle response. When this is taken care of, power and response is very noticeably better - in other words, the correct fueling at idle also makes for much better power and snap just off idle and even up through the rev range.
there is interpay between the idle adjuster and the fuel screw; generally you want the fuel screw adjusted such that you have the highest idle within a certain rpm range with the idle screw turned in as far as possible, and the fuel adjuster within a certain range of turns out; 1.25 turns is afaik good (not 100% sure, the dr-z is supposed to be further out / has a wider acceptable range, up to 3 turns). The general idea is that the fueling is best when the vacuum is the strongest, and then you need less turns out on the idle screw to get the correct idle. It's a process of back-and-forth on the two screws to find the sweet spot. The DR-Z has a crappy vacuum carb and has a rather slow throttle response. When this is taken care of, power and response is very noticeably better - in other words, the correct fueling at idle also makes for much better power and snap just off idle and even up through the rev range.
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