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Krankcase and cylinderhead cover

2811sntr

CB750 New member
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Hi. I am restorating an 1978 cb 750 F2
My question is aboat the krankcase and cylinderhead cover. Both have connection for breather hose, but the aircleander have only one connection. Are this to hoses ment to be connected with a T- connector befordring it godes to the airfilterbox ?
 
On the 77/78 A/K/F CB750's the connection at the rear of the crankcase goes to the bottom of the oil tank. The connection at the valve cover (in stock trim) was connected to a vapor separator under the battery box. The vapor separator would then be connected to the air box and would also have a capped drain hose routed down and to the right. This drain hose would be uncapped to drain as part of routine maintenance. Many people toss the vapor separator and vent the valve cover to the atmosphere with a filter on the end of the hose. If the rings exhibit very much blowby then this solution can be a bit messy...
 
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