Author Topic: CB550 -- valve adjuster locknut size  (Read 891 times)

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Offline carnivorous chicken

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CB550 -- valve adjuster locknut size
« on: July 26, 2021, 04:09:27 PM »
Having a brain fart. I'm headed to Seattle and will work on my and my nephew's 550s. I can't rememebr if the locknut for the valve adjust is 10mm or 8mm. It's been a while...

Offline bryanj

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Re: CB550 -- valve adjuster locknut size
« Reply #1 on: July 26, 2021, 04:58:31 PM »
10
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline carnivorous chicken

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Re: CB550 -- valve adjuster locknut size
« Reply #2 on: July 26, 2021, 06:30:43 PM »
Gracias!

Offline ekpent

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Re: CB550 -- valve adjuster locknut size
« Reply #3 on: July 26, 2021, 06:55:14 PM »
 I'm thinkin' that about the only time I have ever needed an 8mm while wrenching was to bleed a 750F rear brake bleeder,maybe the front also and unscrew a main jet/emulsifier tube in a round top750 carb. Wonder what else I missed  ;)
   Have a safe trip north Chicken !! and let us know how the project goes.  Eric
« Last Edit: July 27, 2021, 02:36:55 PM by ekpent »

Offline carnivorous chicken

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Re: CB550 -- valve adjuster locknut size
« Reply #4 on: July 27, 2021, 01:00:01 PM »
Thanks!

I think I was probably thinking carb sync -- on a 350F they're 8mm IIRC.

Offline robvangulik

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Re: CB550 -- valve adjuster locknut size
« Reply #5 on: July 27, 2021, 02:27:21 PM »
Thanks!

I think I was probably thinking carb sync -- on a 350F they're 8mm IIRC.
Worse, 9mm.

Offline carnivorous chicken

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Re: CB550 -- valve adjuster locknut size
« Reply #6 on: July 27, 2021, 02:59:49 PM »
What about on a 550?

Offline bryanj

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Re: CB550 -- valve adjuster locknut size
« Reply #7 on: July 27, 2021, 03:30:02 PM »
8mm
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline carnivorous chicken

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Re: CB550 -- valve adjuster locknut size
« Reply #8 on: July 27, 2021, 03:48:32 PM »
Awright, thanks again guys.

Offline carnivorous chicken

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Re: CB550 -- valve adjuster locknut size
« Reply #9 on: August 09, 2021, 08:21:03 AM »
Just a postscript...

My nephew called me a couple days before I went up there to tell me he had dumped his bike. His story was that he rode it to a nearby bar, got loaded, and then walked it home and it tipped over on him. He picked it up, but then it fell over on the other side (which, honestly, would be kind of funny to see but tragic at the same time). He's 24, young and dumb. He said it wouldn't start, and gave me a litany of reasons he thought it might be, including tearing down the carburetors and a "loss of compression." He clearly is new to this and has no idea what he's talking about. I told him it was likely just a fuse that popped.

He had a little scraping damage to the bottom of the stator cover, both rear turn signals were bent down (but he thought it looked OK because they "matched"). The R front signal was smashed, and maybe worst of all he cracked the L side cover -- and can't remember if he picked up the piece. There was a little scrape on the speedo mount as well.

I tuned up his bike, showed him how to adjust valves, dress points, set the timing with a strobe, clean plugs, etc. Valves and timing were off, but we got them dialed in. He showed interest in these steps, so maybe he will do them on his own in the future. Fired it up and took it for a spin, then let him -- he said it was running better than ever.

We didn't change out the oil filter -- the bolt's head was stripped, and we didn't order a filter. So that will wait until I go back (I found him the bolt at Bob's salvage in PHX before I came home to Mexico, along with the speedo mount and shift lever to replace his bent one). He had a spare turn signal housing, but it was rear with only one wire. So I had to remove his R fork to get the headlight ear off (the wiring wouldn't come through on its own) and replace the guts of the two-wire, smashed signal with the guts of the intact one-wire signal. Got that back together, and learned that the wiring in the headlight was a little wonky. But got it figured out. A couple hours wrenching, and my 84-year-old dad looked on and kept me company.

My bike hadn't been started since December 2019, the last time I was there. I put a little oil in the cylinders and kicked it a couple times, tuned it up, changed out the gas, and it fired first kick. Needed a new battery. But I rode it around Seattle for a couple days, no problems.

I've owned this bike since '92, and for the last 20 years or so ride it in the summer and at Christmas when I visit Seattle, and it just keeps going.

Offline ekpent

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Re: CB550 -- valve adjuster locknut size
« Reply #10 on: August 09, 2021, 08:33:06 AM »
Glad you got to see your Dad and other family and maybe visit some old haunts on a bike while you were in town. Sounds like you did your nephew a "solid" as the younger gen says  :D

Offline craz1

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Re: CB550 -- valve adjuster locknut size
« Reply #11 on: August 14, 2021, 10:15:32 AM »
I learned the lesson in my 20's not to drink and drive on the bike (or car) when after having several beers I pulled into the garage next to my dads van. I forgot to put the kickstand down and the bike and me(with helmet on) crashed into the van. My head put a huge dent in his work truck.
74 CB550,73 Z1900, 74 Z1900, 75 Z1900,
72 XS2650, 73 RD350, 2013 FJR1300, 84 XJ550 YAM

Offline BenelliSEI

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Re: CB550 -- valve adjuster locknut size
« Reply #12 on: August 14, 2021, 07:11:00 PM »
I learned the lesson in my 20's not to drink and drive on the bike (or car) when after having several beers I pulled into the garage next to my dads van. I forgot to put the kickstand down and the bike and me(with helmet on) crashed into the van. My head put a huge dent in his work truck.

Having done this myself (many years ago, I dented the front fender of my Mom’s MG Midget), I just laughed my ass off, out loud! Thanks.

Offline BenelliSEI

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Re: CB550 -- valve adjuster locknut size
« Reply #13 on: August 14, 2021, 07:12:02 PM »
Just a postscript...

My nephew called me a couple days before I went up there to tell me he had dumped his bike. His story was that he rode it to a nearby bar, got loaded, and then walked it home and it tipped over on him. He picked it up, but then it fell over on the other side (which, honestly, would be kind of funny to see but tragic at the same time). He's 24, young and dumb. He said it wouldn't start, and gave me a litany of reasons he thought it might be, including tearing down the carburetors and a "loss of compression." He clearly is new to this and has no idea what he's talking about. I told him it was likely just a fuse that popped.




Nice way too o “spend some time”. Well done!

He had a little scraping damage to the bottom of the stator cover, both rear turn signals were bent down (but he thought it looked OK because they "matched"). The R front signal was smashed, and maybe worst of all he cracked the L side cover -- and can't remember if he picked up the piece. There was a little scrape on the speedo mount as well.

I tuned up his bike, showed him how to adjust valves, dress points, set the timing with a strobe, clean plugs, etc. Valves and timing were off, but we got them dialed in. He showed interest in these steps, so maybe he will do them on his own in the future. Fired it up and took it for a spin, then let him -- he said it was running better than ever.

We didn't change out the oil filter -- the bolt's head was stripped, and we didn't order a filter. So that will wait until I go back (I found him the bolt at Bob's salvage in PHX before I came home to Mexico, along with the speedo mount and shift lever to replace his bent one). He had a spare turn signal housing, but it was rear with only one wire. So I had to remove his R fork to get the headlight ear off (the wiring wouldn't come through on its own) and replace the guts of the two-wire, smashed signal with the guts of the intact one-wire signal. Got that back together, and learned that the wiring in the headlight was a little wonky. But got it figured out. A couple hours wrenching, and my 84-year-old dad looked on and kept me company.

My bike hadn't been started since December 2019, the last time I was there. I put a little oil in the cylinders and kicked it a couple times, tuned it up, changed out the gas, and it fired first kick. Needed a new battery. But I rode it around Seattle for a couple days, no problems.

I've owned this bike since '92, and for the last 20 years or so ride it in the summer and at Christmas when I visit Seattle, and it just keeps going.