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CB650C Recommission

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Clunker:
I will let you know how it works out with these carbs. When I used it on the kwaks I balanced the carbs first then used the Colortune then balanced the carbs again. Both bikes ticked over superbly and went like excrement off a digging implement. Both bikes were carb strip jobs that had been stood for years.

mike the bike:
I would have thought the colourtune would be useful for setting the air mixture screw because the existing advice is a bit hit and miss.   Not something I play around with,  if the bike starts and runs ok then I don't adjust anything but I wouldn't mind checking.

Clunker:
It was after I first balanced the kwak carbs, then tried adjusting the mixture screws according to the Books and plug condition, with less than satisfactory results that I invested in the Colortune. With the Colortune I could actually see how different the settings for each cylinder were, even though they were adjusted as much as possible to proper specs. I set out at plug 1 with the tank off and a motorcycle cover over myself and the bike, engine running of course, screwed in the mixture screw all the way then backed it out until the "bunsen blue flame" appeared then carried on going until I lost it, then backed it in again until "bunsen blue" again. Did this for each plug, also opened the throttle about a quarter on each cylinder to observe colour change in the chamber, got each mixture screw set so that the response was as close as I could get with each cylinder. I figured that if each mixture screw was set as closely as possible to the rest then that wasn't going to be a bad thing and balancing the carbs again afterwards was going to be as close as I could possibly get by myself without expensive equipment. Anyway, it sure did improve throttle response and performance. I'll just have to try it with the CB carbs, it's not gonna cost me anything to give it a go as I've already got the gear. Watch this space! ;)

Clunker:
Today I freed off the clutch plates, lubricated the extremely stiff clutch cable, changed the oil and filter. While the clutch cover was off I got the polishing tackle out, 400 + 800 + 1200 grit wet & dry, fine wire wool, toothbrushes, tube of Solvol and bucket of warm soapy water. The clutch cover now matches the rest of the casings, just need to do the black circle with Humbrol Satin black. Rain stopped play! >:(  Clutch works great though! 8)

Clunker:
Yesterday I set the valves, PO told me he had set them. He must have used a shovel for feeler gauges cos they all had way too big settings. :o

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