Throttle valve not opening fully

It's a good idea to check that your throttle valve opens fully when throttle is set WOT position.

I noticed that this was not the case with my Madeira 40 and I was not getting the full power!

Fortunately this is easy to fix, you need to remove the airbox first, then put throttle to wide-open position and check that throttle valves are fully open. If the throttle valves are not horizontal you need to loosen the bolts holding the part number 9005740 "Accelerator cam" and slide it downwards.

There should be no gap in neutral or WOT throttle positions, make sure to test both!

If there is a gap where the yellow arrow points then adjust
the accelator cam by loosening two bolts (indicated in red).
I had a gap in the idle position and thus the valves did not open fully.

Now the throttle valve is fully open in WOT position.