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Current update on progress of my recently acquired 1973 750 Hi-Rider. I can now consistently get her to start and run, sometimes (with fingers crossed) on the first kick. While running a couple of oil leaks showed up, which have now been corrected. Even though it will start and run, it just isn't running as smoothly as I'm sure it's supposed to. Lowered the idle speed some and would still continue to run, but when I try to tweak the air/fuel mixture screw, it just doesn't seem to improve or change much. As I've posted earlier, carbs have been off, run through the ultrasonic and cleaned. As others have suggested, I've went back and ran a .016" wire through the mix screw "bush". Have just done a compression check. Used a good quality Milton compression tester. Throttle cranked open while kicking. Kicked through 7-8 times on each test. Right side will show 170 p.s.i., and the left side will show 180-185 p.s.i. Test results would repeat on multiple testings. This seems like "very" good compression. Had installed new correct number plugs, (Chanmpion N-7Y) befor starting to try to tune the bike. When plugs were pulled, they look black/sooty. I realize, in general this means rich. Any suggestions, offhand, on what direction to go from here?

<blockquote data-quote="quawk" data-source="post: 655347" data-attributes="member: 14913"><p>Current update on progress of my recently acquired 1973 750 Hi-Rider. I can now consistently get her to start and run, sometimes (with fingers crossed) on the first kick. While running a couple of oil leaks showed up, which have now been corrected. Even though it will start and run, it just isn&#039;t running as smoothly as I&#039;m sure it&#039;s supposed to. Lowered the idle speed some and would still continue to run, but when I try to tweak the air/fuel mixture screw, it just doesn&#039;t seem to improve or change much. As I&#039;ve posted earlier, carbs have been off, run through the ultrasonic and cleaned. As others have suggested, I&#039;ve went back and ran a&nbsp; .016&quot; wire through the mix screw &quot;bush&quot;. Have just done a compression check. Used a good quality Milton compression tester. Throttle cranked open while kicking. Kicked through 7-8 times on each test. Right side will show 170 p.s.i., and the left side will show 180-185 p.s.i.&nbsp; Test results would repeat on multiple testings. This seems like &quot;very&quot; good compression. Had installed new correct number plugs, (Chanmpion N-7Y) befor starting&nbsp; to try to tune the bike. When plugs were pulled, they look black/sooty. I realize, in general this means rich. Any suggestions, offhand, on what direction to go from here?</p></blockquote><p></p>

[QUOTE="quawk, post: 655347, member: 14913"] Current update on progress of my recently acquired 1973 750 Hi-Rider. I can now consistently get her to start and run, sometimes (with fingers crossed) on the first kick. While running a couple of oil leaks showed up, which have now been corrected. Even though it will start and run, it just isn't running as smoothly as I'm sure it's supposed to. Lowered the idle speed some and would still continue to run, but when I try to tweak the air/fuel mixture screw, it just doesn't seem to improve or change much. As I've posted earlier, carbs have been off, run through the ultrasonic and cleaned. As others have suggested, I've went back and ran a .016" wire through the mix screw "bush". Have just done a compression check. Used a good quality Milton compression tester. Throttle cranked open while kicking. Kicked through 7-8 times on each test. Right side will show 170 p.s.i., and the left side will show 180-185 p.s.i. Test results would repeat on multiple testings. This seems like "very" good compression. Had installed new correct number plugs, (Chanmpion N-7Y) befor starting to try to tune the bike. When plugs were pulled, they look black/sooty. I realize, in general this means rich. Any suggestions, offhand, on what direction to go from here? [/QUOTE]

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