CBR 600F 1987 - 1990 CBR 600F Forum

1987 600F Project bike !

Old Nov 4, 2021 | 08:18 PM
  #51  
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So, despite reading the warnings not to mix up parts between carbs, and trying to be careful, I did it. I *may* have mixed up the float bowl covers for two of the carbs. Grrrr...

Why is it so bad to mix up carb parts ? Does it matter if you're going to rebuild the carbs anyways ?
 
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Old Nov 4, 2021 | 10:37 PM
  #52  
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Float bowl covers not a big deal. Jets, needles and the like are more critical.
 
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Old Nov 5, 2021 | 07:09 AM
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On the float bowls just make sure the drain screws are pointing out and you will be fine.
 

Last edited by hamlin6; Nov 6, 2021 at 01:14 PM.
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Old Nov 6, 2021 | 12:58 PM
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Whew… what a relief. I stared at those two covers for a few minutes in disbelief !
 
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Old Nov 6, 2021 | 01:51 PM
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Old Nov 7, 2021 | 06:53 PM
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Do you guys think I need a new tank fuel filter ?


seems like a shame to have to buy a new petcock just to get a fuel filter, but @Al1040 indicated I might have to do that.

also took a look at the inline fuel filter today. I poured some water in the inlet and held the filter vertical and absolutely nothing passed through. I was able to blow gently through it and now I get a trickle. I am going to replace this anyways.I am assuming I can use any filter with the right size inlet and outlet sizes. Are the fuel hoses 5/16” ID ? I took the filter to our local store (affectionately called “Crappy Tire”) but they didn’t have any hoses that fit (all 1/4” or smaller).
 

Last edited by NuggyBuggyCBR; Nov 7, 2021 at 08:01 PM.
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Old Nov 7, 2021 | 08:37 PM
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@NuggyBuggyCBR So why can't you just buy a new one? Seems to be available.

https://www.partzilla.com/product/ho...19e8ff0e673d2b
 
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Old Nov 7, 2021 | 08:52 PM
  #58  
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Originally Posted by IDoDirt
@NuggyBuggyCBR So why can't you just buy a new one? Seems to be available.

https://www.partzilla.com/product/ho...19e8ff0e673d2b
I actually hadn't gone looking for one yet. @Al1040 mentioned he couldn't source a filter without replacing the whole shebang, so I assumed I would be in the same pickle. Thanks - I'll call my Honda dealer and see if they can get me what I need.

Also had a go at seeing if I could clean the pilot jets. I couldn't find Chem-Dip locally but am actually thinking of buying an Ultrasonic cleaner (all my work gets done at my cottage where we are on a septic tank and well water, and I don't want to rinse off nasty chemicals and have it go into my septic, lake, or water table).

So until I figure that out, I figured I would spray and soak it for about 15 minutes in some Briggs and Stratton carb cleaner I had in the garage, then hit it with compressed air. I can now see a *tiny* ***** of light, but not as much as you showed in your picture. At least now I know it was pretty much blocked. I'll probably buy a carb cleaning wire set, or use a guitar string, and take a few pokes at it to see what happens.
 
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Old Nov 8, 2021 | 07:44 AM
  #59  
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A technique that I learned is to find a wire brush with reasonably long bristles. Cut one of the bristles off and hold it with a pair of pliers. You can then poke the hole to get it broken open. Use caution though, as you don't want to do anything that would enlarge the opening, remember it's only brass. For a number of years I had and used one of those Harbor Freight ultrasonic cleaners. I think it was about $69 or something along those lines. The tank is large enough to hold 1 carburetor, or maybe 2, but it only has a single transducer. The cleaning action is primarily based right in the center of the tank and not so much around the rest. Also, the unit is made of plastic and it's case wraps around over the top of the tank lip. Since the tank doesn't have a drain, you're either forced to siphon out the cleaning solution or dump it out. The problem with dumping is that the solution can get between the plastic and ultimately inside the unit where it will eventually damage it. I've always used the siphon method to drain it. in January of this year I purchased a newer 10 liter unit. It was a little over double the price. It's all metal, has 4 transducers, a heater and a drain valve. It works significantly better than the HF model. I just picked it up from Amazon.

Good luck on the idle jets, they can be frustrating.
 
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Old Nov 9, 2021 | 09:02 PM
  #60  
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@IDoDirt Do you mind sharing the link for the Ultrasonic you bought ?
 
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