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  1. Fuel Supply and Carburation
    I just bought a 1982 CM450c one month ago. It was a barn find, only 5400 miles. The seller supposedly “cleaned” the carbs and used a rebuild kit. He got it running, though said carbs needed adjusting. I’ve got it starting easily now, but requires 2-3 min of choke and slight throttle. It then...
  2. Engine Discussion
    Hello, New to the forum, Names Brian. Northeast Ohio Lorain County Area, 28 Years Old DIY motorcycle enthusiast, Backyard mechanic no professional here but I do my best, Ive got a few motorcycles (74 cb500,71 Triumph Daytona 500,04 Suzuki DRZ400). I Rebuilt the top end of my cb500 and multiple...
  3. Fuel Supply and Carburation
    Hey all- Like the title says, I'm new to jetting carbs. I had gotten decent at tuning up my Keihins but wanted to try and see how the bike would run with Mikunis installed. I started with: 185 Main 35 Pilot 6DH7 Jet Needle 2.0 Air Jet 159 P-5 Needle Jet With that set up I am able to hold an...
  4. Engine Discussion
    First post so bear with me here, browsing the forums I think its better to give too much info than not enough so that's what I plan to do: I've had the bike for just over a year now. Here's the most recent work I've had done on it: two months ago I had the following done: -New exhaust pipe...
  5. Fuel Supply and Carburation
    Hello, I have very little mechanical savvy FYI. I just got this CB400A last month and it's having trouble idling, driving seems fine, but it is barely staying running and stalls at idle. I have to rev it up a little at idle and it's difficult with learning how to ride to have to worry about...
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