3 - MAINTENANCE
71
ADJUSTING THE VALVE SETTINGS
THE VALVE SETTINGS ARE ADJUS-
TED BY MEANS OF SHIMS OR CA-
LIBRATED TAPPETS (1).
THE SHIMS VARY IN 0.05 MM IN-
CREMENTS.
THERE ARE 12 AVAILABLE (2.2 MM
TO 2.7 MM).
THIS TASK SHOULD BE PERFOR-
MED WITH THE ENGINE COLD
(AMBIENT TEMPERATURE).
1. First remove:
*
The seat and the fuel tank.
STEPS TO FOLLOW
1. Remove:
- The inspection plugs (2) from the flywheel cover.
- The spark plug connector cap and the spark plug.
- The 4 rocker cover bolts (3).
- The rocker cover (4).
2. Position:
- The piston at top dead centre (TDC) on the compression
stroke. To do so, turn the crankshaft in an
anticlockwise di-
rection
with an Allen key until the mark (5) is lined up with
the mark to be found on the flywheel (6).
TURN THE CRANKSHAFT IN AN
ANTICLOCKWISE DIRECTION.
ATTEMPTING TO TURN IT IN THE
OPPOSITE DIRECTION MAY CAU-
SE SERIOUS DAMAGE TO THE EN-
GINE.
1
2
5
6
CAUTION
4
3
N.B.
3
Summary of Contents for GPR 125 Racing
Page 1: ...WORKSHOP MANUAL GPR 125 4 stroke ...
Page 169: ...6 COOLING SYSTEM 169 6 1 DIAGRAM OF THE SYSTEM ...
Page 170: ...6 COOLING SYSTEM 170 ...
Page 179: ...7 LUBRICATION SYSTEM 179 7 1 DIAGRAM OF THE SYSTEM ...
Page 180: ...7 LUBRICATION SYSTEM 180 ...
Page 192: ...8 CHASSIS 192 FITTING FRONT SUSPENSION ...
Page 202: ...9 BRAKING SYSTEM 202 9 BRAKING SYSTEM FRONT BRAKE REAR BRAKE 203 211 9 1 9 2 ...
Page 247: ...Rev 0 2009 ...