Serpento FORZA 150 Manual De Usuario página 116

• FORZA 150
MANUAL DEL USUARIO
Adjustment of valve clearancevv
The valve clearance shall be checked and adjusted under the cooling condition of engines.
1. Remove the fan guard and cylinder head cover.
2. Turn the magnetor rotor anticlockwise to align the marker T of the rotor with the vertical line projected on the right case cover. Make sure that
the piston is on the top of the compression stroke.
3. Insert a clearance gauge between the adjusting screw and valve stem to ensure a proper clearance of the exhaust valve.
4. Standard valve clearance
Intake valve clearance:
0.04-0.05mm
Exhaust valve clearance:
0.05-0.06mm
5. To obtain a proper valve clearance, loose the adjusting nut and then turn the mating screw. Turn the adjusting nut on the completion of
adjustment and measure the clearance until it meets the criteria.
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