What a concept - A Girl Bringing Back Her 1966 Super Hawk
I'm wondering if the sticky choke blades have had an effect on the carb bodies, as well, Malcolm. They definitely need to come out and have some attention paid to them. I'm seeing little wear patterns on the slides that point to the inlet side of the carburetors, and they seem to "catch" from half open up to full open. They don't take a lot of pressure to push back down, but I really don't know that the spring would create enough tension to overcome the "stickiness" that I'm feeling right now. More work. It's a minor setback. I just hope I don't have to spend more money! 1965 CB77 305 Super Hawk
1989 NT650 Hawk GT 1981 Yamaha XJ550 Seca
Call me when ya can.
I have a cure. ..............................lm
LM, I'll call you for sure!
CK, I did put a straight edge across the flanges, in all directions. Both flanges are true. I checked the O rings, carefully, and they are soft enough, and have room enough in their slots, to expand and not distort the carb bodies. I also checked the insulators, for true and the O rings, and the same holds true for them. They're okay, and there is no reason, that I could find, for mounting the carbs to cause a distortion, nor are they distorted now. Cliff, the slides are absolutely in the correct carb. The cutout faces the inlet - the air cleaner - and they are keyed to go in one way only, as you said. So, they are correct, there. Okay, then, so I pulled out the choke blades. They are filthy, and the cavity they live in is equally gross. When I loosened up the retainer nuts, the slides started to move easier in the bores - not perfect, but much better. I think the problem, as I suspected, lies with the choke blades. Time for a thorough cleaning!
Last edited by sarals on Thu Nov 13, 2014 10:27 am, edited 3 times in total.
1965 CB77 305 Super Hawk
1989 NT650 Hawk GT 1981 Yamaha XJ550 Seca
Here's a better shot of the choke blades. Notice how worn the actuator arms are? Dirt did that, I'm pretty sure! I'm wondering, when I reassemble them, if it wouldn't be a good idea to put a little bit of lithium grease on those actuators, the pins, where they contact that slot in the blades, to help them out a little? I don't think any of the lube will be able to find it's way into the venturi - so it couldn't hurt.
Last edited by sarals on Thu Nov 13, 2014 10:27 am, edited 1 time in total.
1965 CB77 305 Super Hawk
1989 NT650 Hawk GT 1981 Yamaha XJ550 Seca
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