hard ticking at3500 rpm

Let's resume:

8 nuts and washers at the top, take off cam cover and split cam chain.
2 nuts and washers lateraly under spark plugs, 1 nut and washer at the back above the cam chain tensionner.
You can take the 2 side covers at the end of the camshaft off later if you want.

Hit or rather tap the head firmly front and back and sideways with a rubber mallet staying perpendicular to the fins so as not to bend or break them.
If that does not suffice, you can initiate an unsticking of the head by using a fine, flat blade, like a long kitchen knife somewhere where you don't risk damaging the head surface or breaking anything. Best place is at the back above the cam chain adjuster or lateraly under the spark plug holes. Tap the blade gently into the head gasket so as to start unsticking the head; do not use any sort of lever.
Once it's started to unstick, pull the head off or use the rubber mallet to completely unstick.

Ciao
Paul
 
Paul, Thanks again
All mentioned screws and nuts removed, also according to green book. Also removed the complete chain tensioner.
the side covers are still in place.

Laverdalothar, can you remove the rocker axis on a 750SF with the head in place? Please tell me how
 
breganzebike said:
Paul, Thanks again
All mentioned screws and nuts removed, also according to green book. Also removed the complete chain tensioner.
the side covers are still in place.

Laverdalothar, can you remove the rocker axis on a 750SF with the head in place? Please tell me how
Click to expand...

The head has to be off to get the rocker spindles out since there is a cutaway in the spindle to let a head/cylinder stud through.
Ciao
Paul
 
[quoteLaverdalothar, can you remove the rocker axis on a 750SF with the head in place? Please tell me how][/quote]

You could remove the 4 studs now cam cover has been removed - best to get head off now you've got this far
 
Tippie said:
Have a good look in your cylinderhead with a torch through the valve covers. Check the cam lobes carefully to see if they aren't torn due to lack of oil through a rocker arm. Also check how much sideplay and rock the rocker-arms have on their spindles when when they are not loading the valve, sometimes they need a shim for sideplay and the movement can manifest at certain revs. Of course make sure your clearances are 0.15 and 2.00 and the valvetops are flat (not pounded concave by the adjusters).
Look for a broken valve-spring.
Otherwise, when the bike is cold, go around and pound things like mufflers, mudguards etc with the side of your fist to find something loose or a broken bracket. I had a lever that rattled really loud at certain revs once on a long trip, was sure it came from the motor.
With 160kmh top speed it sounds like you have a setup or tuning problem (restrictive mufflers e.g) not necessarily related to your knocking.
Click to expand...

Finally fixed the problem, YES I am happy, as is my engine
The rockers of the inlet valvels were shimmed, and the valvetops flattened
That fixed the problem of hard ticking in the head.

So it was not the cam key, not knocking or pinking

Simple, sounds like a weekend job, but took a lot more weekends starting from august
Thanks for good advice, Tippie, and help from all others with dismantling the head
George
 
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