Originally Posted by kevniau
Just bought this second hand engine without any manual. Any one know what the factory setting for this engine??
In the red circle, is that mixture needle?? how to set that one??
Been searched around on interet, can't find any info. Where I can find the user manual ?? or any have it??
yes,the red circle is the mixture needle,yr mixture needle is correct show in yr pic,measure the gap from mixture needle to the low speed needle at 47.9mm then set the HSN to the race tune.it is a powerful engine with high rpm,the weak point is quite sensitive to the weather change.