Benelli Tornado Tre Novicento 903, Workshop Manual

Page: 62 / 336

UK
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MF9_UK
T T
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L I M I T E D E D I T I O N
3.9 ADJUSTMENT VALVE PLAY
Remove the internal instrument board fastenings (see
“DISMANTLE INTERNAL INSTRUMENT BOARD
FASTENINGS").
Remove the small cap (see "DISMANTLE SMALL CAP").
Remove the lower cowling (see“DISMANTLE LOWER
COWLING").
Remove the upper left and right cowling (see "DISMANTLE
LEFT AND RIGHT COWLING").
Remove the tank (see "DISMANTLE TANK").
Remove the air box conduits (see "DISMANTLE AIR BOX").
Remove the air box (see "DISMANTLE AIR BOX").
Remove the under headlight fastening (see "DISMANTLE
UNDER HEADLIGHT FASTENING").
Remove the wheel housing (see "DISMANTLE WHEEL
HOUSING"
Remove the coils.
Remove the sparking-plugs.
Remove the head cover (see "DISMANTLE HEAD COVER").
Remove the phonic wheel inspection cap (1).
Make the engine turn over with the phonic wheel retaining screw
and in the meantime measure the valve play between the cams
and the small bowls with the feeler. If adjustment is necessary,
operate as follows:
SPECIFIC VALUE
Suction = 0.25 ± 0.30 mm
Exhaust = 0.30 ± 0.35 mm
OPERATION PROCEDURE:
Align the sprockets of the distribution chain with the signs facing
inwards. In this position the valves are all in the exhaust
position. Dismantle the chain stretcher (see procedure).
Dismantle the cams one at a time, raising the chain.
Raise the small bowls (2) and change the pads (3) to adjust.