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  1. MotersickleBum

    For Sale - Parting out Entire 81 CB750

    ok, i have HAD IT. i got this thing thumping with starting fluid but it won't stay running despite my best efforts. i've had two old yammys and got them running very strong but now have two old hondas and both are pissing me right off. so, in the immortal words of Roberto Duran, "no mas, no...
  2. MotersickleBum

    Running BUT not sucking gas from carbs

    ok, i cleaned the carbs and i am able to get it running on starting fluid so i thought the hardest part was behind me. it will run but only on starting fluid even though i installed and filed the tank and gas is flowing to the carbs. i'm figuring that even if there is a vacuum leak, it...
  3. MotersickleBum

    tank is like glass

    i repainted this thing yesterday because i wasn't satisfied with it. it has a Xirallic black undercoat with a clear/zirallic black, gold pearl mix top coat. it came out LIKE WET GLASS.
  4. MotersickleBum

    carb filler hose

    is the carb filler hose on the left side of the carbs and that thinner hose on the middle an overflow? i got the pos thumping but it dies so it's not getting gas despite the fact that i filled up the floats. unfortunately the choke is a real choke and not an enricher......so i'm not sure why...
  5. MotersickleBum

    Fire in the hole!

    OK, today i cleaned the carbs on my 81 CB750 that's been sitting for over a decade. i also squirted oil on the cams before trying to get it running. i have not yet reinstalled the gas tank. i just added fuel to the float bowls with a hose and funnel then squired some starting fluid in...
  6. MotersickleBum

    Oil Cams Manually To Avoid Damage

    OK, i got my "new" 81 750 to pop and run on starting fluid so now before i put gas in the carbs i was thinking about manually oiling the cams because it's been sitting for a decade. can i just pop off the valve cover?
  7. MotersickleBum

    What is the Stock Jet Size on an 81 CB750?

    ok, i got fire in the hole so now i have to pull the carbs and clean then see if i can get it running well. but i'm going to go with pods and the bike already has a 4-1 header so i need to know what is the stock main jet size for my bike. someone may have already changed the jets but i won't...
  8. MotersickleBum

    Weak Spark?

    OK, i now have spark on all four BUT it looks a bit weak. it archs about 1/4" . last night i tried to get it to pop with starting fluid but failed.
  9. MotersickleBum

    Headlight Bucket Wiring

    OK, i got spark but it's very weak so i checked the coils and they ohm-out good. i cleaned as many connections as possible. everything works, starter, lights, horn, signals et... the bike has 4007 miles on it. so i opened up my headlight bucket and found a bunch of wires with no place to...
  10. MotersickleBum

    Rim Advice

    i just bought an 81 CB750 with chrome spoke wheels but the chrome is flaking off and they look bad. what are my cheapest replacement options and sizes and where to buy them? i just want something tubeless and cheap. thanks!
  11. MotersickleBum

    No Spark 1981 CB750

    i just bought a CB750 and the odometer says 4007 miles. it looks good. everything powers up and starter turns over well et... UPDATE: I NOW HAVE SPARK! i did the easy stuff first and cleaned the heck out of connections at the coils.... i like how simple honda wired this bike...
  12. MotersickleBum

    Craigslist 1981 CB750 for $250

    ok, i just bought a black 81 cb750 today off of craigslist for $250.00. it's got 4007 miles on the odometer. i couldn't go wrong. it does not currently run though but the guy gave me a brand new battery and repair manual and sundry parts. here's a pic as it was on craigslist. it's now on...
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