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Fuel filter or no fuel filter, if you let the bike sit for some length of time without running it dry or draining the float bowls can result in the idle or low speed circuits getting gummed up with deposits. I did not do this last winter and I had an issue with one cylinder not firing. Always at...

After winter storage I tried to start the bike but found it was not idling on one cylinder. I splash a bit of water on the pipe to see which one is not firing. After removing the float bowl from the 3rd carb from the left as you are sitting on the bike, I checked for dirt at the bottom of the...

I found that a set of 1/4 inch ratchet and small socket (1/4 inch) will hold a 1/4 inch small flat bit very nicely and with small extentions you can also use these for carburator work. A good flashlight or trouble light is a must.

It was Saturday actually, but, I removed the float bowl on cylinder number 3 from the left (sitting on the bike). The exhaust was cold after running for some 30 seconds and I suspected the fuel was not getting through on the idle circuit. After removing the bowl, I removed the idle screw and...

I recently started my 1979 Honda CB750K after winter storage, and it ran quite well. I did not run it dry like usual before storing it, and thought that I may have an issue. One week later I start the bike and it's running like crap. Rev it up and it revs up but it will not idle smoothly. I...

You did not mention that you fitted NEW PLUG WIRES, only new plugs. Had a similar issue and as soon as I put new wires on, it would pull 9500 RPM without any hesitation. Hondas like this one only like nice clean fuel and nice new electronics.

IGNITION WIRES. Please check or replace them entirely. As soon as I put new wires and plugs on my '79 (19000km) it pulled red line. Cleaned the carbs 3 times and the problem turned out to be ignition wires.

Just a short story as to why my signals stopped working over the winter storage. I just put in a fully charged one year old battery for spring startup and noticed that the signals were not working. Wondering what happened , I started looking into the issue. Signals would light up on the front...

Ignition wires ! I had the same issue. Bike starts spitting and misfiring around 7500 RPM. It suddenly came to mind to check the wires and they seemed like the original ones because all the fittings were loose fitting. I purchased some new automotive ignition wires from CTC and made up new ones...

So today I pulled the starter and found a lot of black soot inside of the bush side of the starter. To undo the 2 screws that hold the starter together, I found that if you use a set of medium good quality vice grips with good teeth and clamp them down really hard right next to the threads in a...

That's what it sounds like to me as well. I have heard this similar noise in some of the places I worked as a millwright mechanic and it usually turned out to be a dry bushing in need of lube. Thanks for your comment.

One question ? How old are the spark plug wires ? There are just too many symptoms of old plug wires. As soon as I replaced all 4 plugs and wires, no more breakup and it pulls 9500 RPM without any breakup at all.

For what it is worth, I had installed the float bowls after cleaning the carbs and after reassembly, and refilling, some leaked. I noticed that the bike was on the side stand, so I tried to remove and replace the bowls with the bike on the main stand. After doing that, I had no leaks and no...

I am getting an ahhh-ooooh-gaahhh noise when starting my 79 CB 750K. It only makes this sound when I start the bike and it begins to run with the starter button pushed for just a second. I have replaced the three bolts on the drive with higher quality bolts and use blue thread locker. I also...

I put an inline filter in the line but the bike died after riding around the corner. After I removed the filter, it ran fine. I think because the filter was made in the far east where filters look like filters and feel like them and cost the same and probably actually do filter but . . . . . too...

I would call this a tachometer drive housing bolt. Have a look at "cmsnl.com" Take some time and I'm sure you will find this exact bolt on this web site. It has expandable parts diagrams. Could be an M5X25 (?) (I don't know the year of your bike.

Yes you can, I own a 1979 CB750K, at present and did own a 1980 F for some years. If you use a 1/4 ratchet with short extention and philips bit, you can undo the (3) screws to each of the float bowls. More room is obtained by removong the starter cover. Pay particular attention to the second...

Maybe just a repeat of something already posted but I found a pretty good way to clean out the gas tank on a well maintained machine. If the tank has been left for a long time and looks pretty bad inside, I can't help you. On a good machine put a little gas in or leave what fuel is in it already...

I bought one last spring. Believe it or not, the jets and float bowls can be nicely cleaned without removing the carburetors. As soon as you remove the carbs, unless you know what you are doing, you are looking at more problems. The more you take them apart and DON'T know what you are doing, the...

Sounds like a spring holding the roller has weakened or broken. The left engine cover must be removed and you will find your issue there.