Desmodromic (type) with four valves per cylinder, operated by eight rocker arms (4 opening rockers and 4 closing rockers) and two overhead camshafts. It is operated by the crankshaft through spur gears, belt rollers and toothed belts.
Desmodromic timing system (fig. 159)

Engine
Performance dataOperating principle
Introduction
The hands free system features two separate on/off buttons, either one of
which may be used as preferred by the rider.
For practical reasons, we recommend using the button on the handlebar rather
than the button located underneath the
plastic shield covering the hands free syst ...
Overhaul of cylinder head components
Cylinder heads
Remove any carbon deposits from the combustion chamber and its ducts.
Remove any scale from the coolant ducts.
Check for cracking and inspect the sealing surfaces for scoring, ridges or other
damage.
Check that the cylinder barrel mating surfaces of the cylinder head are ...
Using a multimeter to check the electrical systems
Introduction
This instrument allows you to measure resistance, voltages, and current
values. Multimeters can be divided into two basic
types: analogue and digital display multimeter. An analogue multimeter has a
pointer display. The dial is marked with the
scales to be used for measurement of ...