Doms CB550F1 project

[DomP]

I have a spare number 4 carb body, 069a, and most of the internals for the rest of the carb bodies, I'm just waiting for Dom to see if he needs anything else besides the carb body, an emulsion tube and the jet leaf spring. Looking at the state of his carbs it's likely that he will.

Sent you a pm

[DomP]

I had a bit of a deeper delve into my bike yesterday, the air box has been messed with to the point I'm not sure what's missing even when looking at the Cmsnl parts list.  I'm guessing lots of the parts aren't even available any longer which leaves a bit of a dilemma.

Can anyone advise me as to why I have two cut wires in the loom that have been connected seemingly the wrong way? Hopefully I've got the carb parts here to reassemble and bench sync and fuses on their way so I might be able to test the electrics by next week...who knows I might even get it started.

[Trigger]

The wires are to the solenoid and it maybe a aftermarket unit that had the colours the other way round. The solenoid is only a switch and it may not matter which way they are fitted on some     

[Johnny4428]

Yes as Trigger says, actually the yellow/red wire from the solenoid looks as if it is connected to the yellow/red on the loom, apart from that little bit of black connection in between. That whole wiring looks as if it needs a good going through. Alarm bells would ring for me with that block and blue connectors fitted.

[McCabe-Thiele (Ted)]

Those piggy back connectors (faded blue one) are notorious for poor connections plus if wrong size wiring for connector it can almost cut the cable in half. I would be replacing that with a decent alternative.

[DomP]

Yeah I'm having alarm bells too!  I'll go through every connector and clean or recrim with jap connectors that I've got from doing my xs.  Hopefully nothing too bad with it all, the seller claimed he'd ridden it in 2017 but I have my doubts, however it did have a clean MOT in 2016 so I wonder if he'd raided it for parts as it had no fuses or spark plugs when I got it delivered.

[Deano400]

Agree, it most probably is an after market part. The PO has put the connector in there as the after market part meant the connectors were male to male and female to female. Not the way I would have done it but was the easiest way to get round the problem.

[Oddjob]

All that wiring mess near the coils is supposed to live in a small box which mounts onto a plate bolted onto the frame, that way it keeps them reasonably dry and protected etc. Is all that missing?

The foam is missing from the metal piece removed from the bottom of the airbox, you must have it fitted or it will wreck the filter with oil mist. Is the spring missing that secures the filter?

[Bryanj]

The two wire goto the insulated activating coil in the solenoid and it really doesnt matter which way round they go.
The air filter system is missing a foam filter that you can cut out of a kitchen scouring pad.

[Trigger]

You also have this part missing from the bottom of the air box >>> https://www.sohc.co.uk/index.php/topic,29346.0.html

[andy120t]

Is any of that filter/drain stuff at the bottom necessary or can it just be removed. Isn’t it US West Coast emissions related, or something similar?

[Oddjob]

Yeah it was emission related, California related almost certainly.

You can ditch it all and just fit the 500 filter, keeps cleaner as well. Vent the pipe from the breather over to atmosphere.

Either keep the old stuff or sell it on, your choice.

[Seabeowner]

The wires to the solenoid may have been reversed as the RHS switch has been replaced at some point. The early 500s only had the yellow /red to the switch and that was then earthed through the bars. The 550Fs switches have two wires to the switch (the yellow/red and a green/red I think) that completes the circuit.

[DomP]

Yeah it was emission related, California related almost certainly.

You can ditch it all and just fit the 500 filter, keeps cleaner as well. Vent the pipe from the breather over to atmosphere.

Either keep the old stuff or sell it on, your choice.

Using a 500 air filter sounds a far simpler option to me, and this won't affect carb jetting from standard?  I'm also missing the airbox lid😫

[Oddjob]

The snorkel fitted to the 550 can be replaced by the tool tray off the 500 as well. It was fitted to reduce induction noise mainly. Jetting will be fine.

Roo has a couple of the tool trays which are far handier than having the snorkel fitted, they ain't cheap however as they are getting ultra rare these days but you can also get a spare fuse holder in it as well, which can be very handy.