Author Topic: 1977 cb550k slow jet replacemnt (Read 2747 times)

illrational · « **on:** September 19, 2011, 12:53:51 PM »

How the hell do I remove this thing?

luap · « **Reply #1 on:** September 19, 2011, 01:02:39 PM »

unscrew it

illrational · « **Reply #2 on:** September 19, 2011, 01:16:19 PM »

Ok maybe I'm talking about the main jet then because I grabbed and tries unacrewing and got no where...maybe they are gummed up

illrational · « **Reply #3 on:** September 19, 2011, 01:31:45 PM »

I'll post picture soon to clairfy parts......feeling like the biggest noon

Frankenkit · « **Reply #4 on:** September 19, 2011, 01:57:20 PM »

I believe those are press-fit jets, same as on cb650 PD carbs? Those can be tricky, I'd suggest getting a piece of rubber or leather (bike innertube, whatever) to protect the soft brass, then grabbing the bugger with a pliers or vicegrips and giving a slight twist as you pull. It can be a bit of a bear.

To make sure we're talking the right thing, though, here's a pic of that I'm talking about.
http://www.siriusconinc.com/pro-detail.php?pid=&product_id=1107

OldSchool_IsCool · « **Reply #5 on:** September 19, 2011, 03:51:01 PM »

Replacements are not available. Take care not to crush them. If you get frustrated, spray a little carb cleaner on them and walk away for a bit.

Frankenkit · « **Reply #6 on:** September 19, 2011, 03:54:02 PM »

Quote from: OldSchool_IsCool on September 19, 2011, 03:51:01 PM

Replacements are not available. Take care not to crush them. If you get frustrated, spray a little carb cleaner on them and walk away for a bit.

What about the items I linked? They're available in multiple sizes... just not quite sure of the quality of the brass considering they're from the same folks who supply keyster kits, I think

OldSchool_IsCool · « **Reply #7 on:** September 19, 2011, 03:56:17 PM »

Quote from: Industrial Kit on September 19, 2011, 03:54:02 PM

Quote from: OldSchool_IsCool on September 19, 2011, 03:51:01 PM
Replacements are not available. Take care not to crush them. If you get frustrated, spray a little carb cleaner on them and walk away for a bit.
What about the items I linked? They're available in multiple sizes... just not quite sure of the quality of the brass considering they're from the same folks who supply keyster kits, I think

Learn something new every day! Thanks for the link, Kit!

illrational · « **Reply #8 on:** September 19, 2011, 05:32:08 PM »

That's not the ones I just screwed those out but there's something I assume is actually the main jets that seem ti be pressed in ill put pic up when I cone from home depot

Danno · « **Reply #9 on:** September 19, 2011, 08:09:38 PM »

if there is no slot in the jet for a screwdriver or if the bore does not fit an allen wrench they are press fit be gentle keep wiggling and they will come out but the oring will be trashed so at the very least it will need a new one after cleaning going back in can be just as much fun if the oring is a little big

TwoTired · « **Reply #10 on:** September 19, 2011, 08:25:57 PM »

A 77 Cb550 K ought to have PD style carbs from the factory, and have pressed in slow jets.
They are located next to the big cast post in the middle of the carb which contains the main emulsion tube and the main jet at the bottom at the very end.
The slow jet next to it is pressed in and pulls straight out, the reverse of how it was put in during initial assembly.
Padded jaws help to keep from marring the jet itself.
There have been pictures of these posted in this forum. But, I'm too lazy to go search for them.

Frankenkit · « **Reply #11 on:** September 19, 2011, 08:49:19 PM »

ILY, TT.

illrational · « **Reply #12 on:** September 19, 2011, 09:17:28 PM »

i tried pulling them out and scarred them

TwoTired · « **Reply #13 on:** September 19, 2011, 10:02:44 PM »

Quote from: Industrial Kit on September 19, 2011, 08:49:19 PM

ILY, TT.

Indoor Lumber Yard? $:-\$

http://www.acronymgeek.com/ILY

Quote from: illrational on September 19, 2011, 09:17:28 PM

i tried pulling them out and scarred them

Then get a better grip with pads, longer handled pliers, and employ mister muscles.
External scarring won't prevent them from operating, by the way.

1974cb550k · « **Reply #14 on:** September 20, 2011, 08:39:23 PM »

Just pull'em out. Simple as that.

Danno · « **Reply #15 on:** September 20, 2011, 10:13:33 PM »

TT the slow jets screw in the main jets are press fit at least all the ones I have taken apart and there are a few models I forget which years that had screw in main jets I have not seen any slow jets that press in and I have one of the very first 550's made in 74 and my slows screw in

dave500 · « **Reply #16 on:** September 20, 2011, 10:35:11 PM »

the 500/550 type one carbs have a leaf spring that retains the main jet and the slow screws in,,the later pd carbs have screw in main jets and pressed in slows that mostly can be removed easily with some finnesse,they have no o ring under them.

Zodo · « **Reply #17 on:** September 20, 2011, 10:41:46 PM »

Faced with the same difficulty in removing the pressed in jets, I ordered some special parallel grip pliers (different than vise grips). The jaws stay parallel to each other at any width, and hopefully will allow a larger contact area on the jets, allowing me to finally remove them. I wasn't able to find them at any local hardware stores....had to get them from Amazon.

TwoTired · « **Reply #18 on:** September 20, 2011, 11:10:54 PM »

Quote from: dave500 on September 20, 2011, 10:35:11 PM

the 500/550 type one carbs have a leaf spring that retains the main jet and the slow screws in,,the later pd carbs have screw in main jets and pressed in slows that mostly can be removed easily with some finnesse,they have no o ring under them.

Exactly correct.

Below is my extraction tool for the pressed in Pilot jets. It is a soft jawed parallel pliers.

illrational · « **Reply #19 on:** September 21, 2011, 04:56:13 AM »

Good stuff definitely appreciate the insight

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Author Topic: 1977 cb550k slow jet replacemnt (Read 2747 times)