Cylinder Head schematic Honda Cb550f2 Super Sport 550 Four 1977 (england)

Valve guides have a hard time on these single overhead cam engines, quite often revved hard from cold, before the oil has reached the cylinder head. Smoking on the overrun, or after ticking over is indicative of worn valve guides. Replacing with new genuine Honda items, whenever you re-build and engine, or just a cylinder head overhaul is good practice, fitting new Honda valves is also recommended at the same time

These light alloy pressure die-castings often suffer with the use. At best the surface finish is spoiled, at worse the alloy it self becomes corroded! Either way the best way to restore is to actually replace the item with this new part.
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All plastic and rubber items exposed to heat, pressure on road dirt, and will sooner or later degrade to the point where they are no longer effective, in this case to reduce heat and vibration going through to the carburetors. The simple answer? Replace them with new Honda items.
To make the most of your order, check the online catalogue and 'parts list' fiche for all the other consumables and spares you may need to complete your service or rebuild.

Given the choice between an old corroded fastener, and a new, nicely plated part, what would you use in the overhaul of your Honda!
Well if we assume correctly, you might like to see all the other new bolts, screws, nuts and washers that will help you achieve a thorough and professional job - Check out the schematic for your model!
We recommend that where applicable when using new nuts, new bolts/studs/spindles/axles are specified at the same time to avoid the old and possibly damaged thread spoiling the new thread!
This is the 8mm FLANGE-NUT.

The importance of using the correct, genuine Honda fasteners in all areas of the machine can never be overstated - This 14mm WASHER is no exception!
The correct material with the correct plated finish - In short it would be unwise, to say the least, to use anything other than genuine Honda fasteners!

Specifying only genuine Honda O-ring seals will ensure the item being refurbished will remain oil tight and, importantly, no contamination enters the inner workings!
This is the 30.8mm O-RING
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Great value, high quality genuine Honda PAN and CROSS-HEAD SCREWS.
Being genuine Honda means these items are made from the correct materials and will prove durable over the long term, as you might expect from the world's largest motorcycle manufacturer!
To help you decide which other fastener related components you may require, browse the on-line schematic or the Gallery for your model.
The more parts you order, the less the shipping costs per item!
This is the 5 x 6 SCREW(A).

Given the choice between an old corroded fastener, and a new, nicely plated part, what would you use in the overhaul of your Honda!
Well if we assume correctly, you might like to see all the other new bolts, screws, nuts and washers that will help you achieve a thorough and professional job - Check out the schematic for your model!
We recommend that where applicable when using new nuts, new bolts/studs/spindles/axles are specified at the same time to avoid the old and possibly damaged thread spoiling the new thread!
This is the 6mm FLANGE-NUT.

Not just any bolt, a genuine Honda bolt! Precisely engineered to the exact job it was designed for without compromise.
This particular bolt is the 6 x 32 FLANGE BOLT.

Buying a new spark plug from CMS will mean, provided the correct part number is specified, you will be getting the correct item that will work in your machine perfectly. No guessing, no taking chances with plugs that may fit, may have the correct reach, but also may run too hot or too cold!
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