SOHC.co.uk Forums > CB500/550

Wiring

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Bryanj:
If you want to go back to standard any 72 onwards 500 or US 550 K0-K2 will fit but the US 550 has a "Safety Interlock" module to stop the starter working unless either the neutral light is on or the clutch lever pulled.

A 550 K3 loom will fit the switch you have and probably the handlebar switches DEPENDING on the type of starter button you have

Trigger:

--- Quote from: Bryanj on November 13, 2014, 07:05:06 PM ---If you want to go back to standard any 72 onwards 500 or US 550 K0-K2 will fit but the US 550 has a "Safety Interlock" module to stop the starter working unless either the neutral light is on or the clutch lever pulled.

A 550 K3 loom will fit the switch you have and probably the handlebar switches DEPENDING on the type of starter button you have

--- End quote ---
I think we need some more pictures. Can not even see what type of headlight bowl is fitted.

popwud:
Engine and frame is a cb500/4 hence the engine number and frame number.

All the electric fittings including those on the handlebars are listed exactly the same as those at David Silver website for cb500/4.

I have put new pistons,rings,gaskets and seals from the DS website.

I remember the old pistons where oversize perhaps it had a new head and every thing else standard.

What size would a 550 piston be ?

This is how I bought it.

Will post some more pics.

Trigger:
Looks like a CB500 to me. The clocks are CB550F. Someone has changed them along with the mounting bracket. Does it still have the ignition bracket down the left side? If so you could put a repro ignition switch and a loom from a CB500 four.
The CB550F loom is a little complicated as it has a box by the coils on the left hand side to fit all the bullet connectors in and your switch gear wires would not reach.   

Trigger:
Oddjob, I think the 550F2 did not have the KM markings on the clock face and the 550K3 did in the UK.

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