10.1.2 Timing System Phase-Setting Check - MOTO GUZZI V10 CENTAURO Werkstatt-Handbuch

10.1.2 TIMING SYSTEM PHASE-SETTING CHECK

(Fig. 10-49)
To check the timing system phase-setting, proceed
as follows:
- allow a clearance of 1.5 mm between the rocking
levers and the valves;
- unscrew the motor pinion fastening nut;
- insert, on the driving shaft slot, the hub code 65 92
84 00 «2» together with the graduated disc code
19 92 96 00 «3», and fasten it to the driving shaft
through a screw;
- use a screw to fasten the arrow N. 17 94 75 60 «4»
to the threaded hole of the base;
- on the sparking plug hole of the left cylinder, install
a comparator support «5», then the comparator
itself;
- turn the disc clockwise until the left cylinder piston
reaches the top dead centre position (with closed
valves), reset the comparator and check that the
marks (on the timing gear and the motor pinion)
«1» are perfectly aligned. Then, through the gear
box inspection hole, check that the mark with letter
«S» is correctly aligned with the mark visible in the
middle of the hole;
- now, align the arrow tip with the zero "TDC" on the
graduated disc;
- according to the timing chart, check the phase
- screw the support with comparator on the sparking
plug hole on the right cylinder head;
- install the control arrow on the base right side;
- turn the disc clockwise until the mark «D» is
aligned with the mark in the middle of the inspection
hole on the gear box (closed valves);
- repeat the operations shown for the left cylinder.
When checking is complete, if everything is correct:
- reset the working clearance between the rocking
levers and the valves (suction 0.10 mm, exhaust
0.15 mm);
- remove the graduated disc from the driving shaft
and the arrow from the base;
- remove the support with comparator from the
cylinder head hole, reassemble the sparking plug
and complete the assembly.
54
5
4
1
3
2
10-49