Author Topic: Recommendation for 550/4 service.  (Read 586 times)

Offline Eloise666

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Recommendation for 550/4 service.
« on: June 07, 2025, 06:58:18 PM »
Hi, I have a 1976 550/4 that needs a service. Any recommendations? I live near Luton. Thanks

Offline Bryanj

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Re: Recommendation for 550/4 service.
« Reply #1 on: June 07, 2025, 07:46:26 PM »
Most shops wont take on old bike, most of it is easy enough to do yourself with a Honda manual

Offline Johnny4428

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Re: Recommendation for 550/4 service.
« Reply #2 on: June 07, 2025, 10:42:21 PM »
Hi Eloise, can’t recommend someone to carry out service but just like to point out that drive chain does look rather slack also is that joining link spring clip broken? I think it might be coming into contact with the bottom of the side stand! Could be wrong though!
1952 Cymoto on Triumph bicycle.
1961 Matchless G3
1974 Honda CB550K1
1978 Honda CB550K3
1999 ST1100 Pan European 50th Anniversary.
1975,1980,1984,1986 Honda C90’s
1973 Honda CB750K3
1977 Honda CB550 (almost)

Offline McCabe-Thiele (Ted)

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Re: Recommendation for 550/4 service.
« Reply #3 on: June 08, 2025, 07:15:53 AM »
Well spotted Johnny, that clip certainly looks broken unless it's a trick of lighting and staining that makes it look like a broken link.

Nice looking Alloy Wheels btw Eloise.👍
« Last Edit: June 09, 2025, 09:23:06 AM by McCabe-Thiele (Ted) »
Honda CB400NA Superdream (current money puddle)
Honda CB500 K1 (second money pit)
https://www.sohc.co.uk/index.php/topic,28541.0.html
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
This is a neat 500 restoration in the USA.
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline Eloise666

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Re: Recommendation for 550/4 service.
« Reply #4 on: June 08, 2025, 10:48:26 AM »
Hi, I have a 1976 550/4 that needs a service. Any recommendations? I live near Luton. Thanks

Thanks for the info guys. Wish I had time to work on the bike but time doesn’t allow. It ran great last summer but I’ve stored it too long and am paying the price.

Offline Seabeowner

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Re: Recommendation for 550/4 service.
« Reply #5 on: June 08, 2025, 06:57:50 PM »
Well spotted Johnny, that clip certainly looks broken unless it's a trick of lighting and staining that makes it look like a link.

See what you mean on the lower run near the sprocket. The clip lower part should be a mirror image of the top part.
Phil
1971  CB500K0  Candy Jade Green or Candy Gold
1973  CB500K1  Candy Ruby Red
1975  CB550F1   Shiny Orange

Offline Johnny4428

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Re: Recommendation for 550/4 service.
« Reply #6 on: June 09, 2025, 06:56:25 AM »
Hi, I have a 1976 550/4 that needs a service. Any recommendations? I live near Luton. Thanks

Thanks for the info guys. Wish I had time to work on the bike but time doesn’t allow. It ran great last summer but I’ve stored it too long and am paying the price.

It’s normal to have a bit of fettling after storage. Depending on old fuel, battery tyres etc. I drain the fuel and swish some diesel round in the tank before I store for winter also remove battery and run the carbs dry of fuel. That saves a bit of headache with fuel blockages. I’m sure with a good service and check over you’ll be up and running again, hopefully if you can find some enthusiastic assistance.
1952 Cymoto on Triumph bicycle.
1961 Matchless G3
1974 Honda CB550K1
1978 Honda CB550K3
1999 ST1100 Pan European 50th Anniversary.
1975,1980,1984,1986 Honda C90’s
1973 Honda CB750K3
1977 Honda CB550 (almost)

Offline deltarider

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Re: Recommendation for 550/4 service.
« Reply #7 on: June 09, 2025, 08:21:00 AM »
The clip on mine sits like the one in the pic. I see no problem.
As far as carbs, during extended periods of time of inactivity, this has proved best for my CB500.
Realise that after carbs have been in contact with fuel, best strategy is to keep carbs in a natural state, which is wet. If not, the seals - now used to plasticizers - will shrink, causing leaks next spring. Keeping the same fuel in the floatbowls isn't good either though, unless you have added a fuel stabilizer. So in winter, I drain the bowls, say every 7 weeks. After draining I crank the engine a few times, so the downgoing pistons can suck the jets clean and then I open the petcock to refill the bowls with fresh fuel. Gasoline by it self is good cleaning agent. I have practised this for the last 20 years and never had a problem. The only time I had left the carbs drained, the seals had shrunk, causing temporary leaking.

Offline Johnny4428

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Re: Recommendation for 550/4 service.
« Reply #8 on: June 09, 2025, 09:40:24 AM »
Maybe I’ve just been lucky Delta! Haven’t had a leak yet storing using the draining down method. And the good thing is I put the bike away and never have to look at it until spring. Each to their own.
1952 Cymoto on Triumph bicycle.
1961 Matchless G3
1974 Honda CB550K1
1978 Honda CB550K3
1999 ST1100 Pan European 50th Anniversary.
1975,1980,1984,1986 Honda C90’s
1973 Honda CB750K3
1977 Honda CB550 (almost)

Offline deltarider

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Re: Recommendation for 550/4 service.
« Reply #9 on: June 09, 2025, 10:09:46 AM »
Maybe I’ve just been lucky Delta! Haven’t had a leak yet storing using the draining down method. And the good thing is I put the bike away and never have to look at it until spring. Each to their own.
And... you wouldn't have added some fuel stabilizer, would you?

Offline Johnny4428

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Re: Recommendation for 550/4 service.
« Reply #10 on: June 09, 2025, 10:29:39 AM »
In the past I have used Frost Ethomix in the 550 but ran out last year and didn’t buy any more. Now I use a little castor oil. No E10 either so that’s a bonus!
1952 Cymoto on Triumph bicycle.
1961 Matchless G3
1974 Honda CB550K1
1978 Honda CB550K3
1999 ST1100 Pan European 50th Anniversary.
1975,1980,1984,1986 Honda C90’s
1973 Honda CB750K3
1977 Honda CB550 (almost)

 

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