food
XS650 Member
So, I bought a set of ~2003 Arctic Cat Z 570 carburetors off Ebay for $130CAD shipped. Actually is was $100 but I screwed up and had them shipped to the wrong address and had to have them reshipped.
I figured even if I couldn't get them to work I get some enjoyment of figuring out how something works and then something cool to shine up and mount on my wall.
Also thought I might as well document the differences between the 588 and the standard 275/168 aftermarket carbs here. I don't have a running bike to try them on right now but I will update with how they run later.
On the front the start circuit and main circuit air ports are in roughly the same spot. The other two ports (which I don't know what, maybe someone can fill me in) are blocked by a brass plug and the casting itself respectively. The other thing of note is the huge "tophat" cap. I do not know why it is so tall. We will get to the slide later, but there is nothing I can see that would require it to be like this.
Left side, fuel inlet is in the same spot. The vent port is present but in a different location. Presumably it is moved solely to make room for the big flat area with the two mounting holes. The Arcitic Cat parts diagram call this "Switch, Magnetic Carburetor". Based on the position it looks to be an idle switch. Not of any use to me. You will also note the lack of casting for the "left hand" idle screw. The bowl is also a different shape. I assume this is because of the floats, which we will get to later.
Back side. The port on the left hand side is manifold vacuum port. Comes with a little boot over it. Not sure why they put it there either, Arctic Cat did not seem to do anything with it. Unlike the idle switch, these will actually be useful.
Right side is pretty standard. Vent port from the front view and vacuum port from the back view are visible. Threaded port for standard mixture screw and idle screw. Standard start enrichment boss casting, which is nice. Some of the snowmobile VM34's use a primer instead of start enrichment (choke) and lack this casting feature. There is casting for another blocked port beside the idle screw that I do not know what would be fore, maybe prime, if one were fittted?
I figured even if I couldn't get them to work I get some enjoyment of figuring out how something works and then something cool to shine up and mount on my wall.
Also thought I might as well document the differences between the 588 and the standard 275/168 aftermarket carbs here. I don't have a running bike to try them on right now but I will update with how they run later.
On the front the start circuit and main circuit air ports are in roughly the same spot. The other two ports (which I don't know what, maybe someone can fill me in) are blocked by a brass plug and the casting itself respectively. The other thing of note is the huge "tophat" cap. I do not know why it is so tall. We will get to the slide later, but there is nothing I can see that would require it to be like this.
Left side, fuel inlet is in the same spot. The vent port is present but in a different location. Presumably it is moved solely to make room for the big flat area with the two mounting holes. The Arcitic Cat parts diagram call this "Switch, Magnetic Carburetor". Based on the position it looks to be an idle switch. Not of any use to me. You will also note the lack of casting for the "left hand" idle screw. The bowl is also a different shape. I assume this is because of the floats, which we will get to later.
Back side. The port on the left hand side is manifold vacuum port. Comes with a little boot over it. Not sure why they put it there either, Arctic Cat did not seem to do anything with it. Unlike the idle switch, these will actually be useful.
Right side is pretty standard. Vent port from the front view and vacuum port from the back view are visible. Threaded port for standard mixture screw and idle screw. Standard start enrichment boss casting, which is nice. Some of the snowmobile VM34's use a primer instead of start enrichment (choke) and lack this casting feature. There is casting for another blocked port beside the idle screw that I do not know what would be fore, maybe prime, if one were fittted?
