Yamaha TZ250M1, Руководство по эксплуатации для владельца

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SETTING
7-10
EC71T000
Cylinder gasket setting parts
Part number Size (thickness)
4JT-11351-02 * t=0.8 mm (0.031 in)
4JT-11351-12 t=0.7 mm (0.028 in)
4JT-11351-22 t=0.6 mm (0.024 in)
4DP-11351-31 t=0.5 mm (0.020 in)
4DP-11351-40 t=0.4 mm (0.016 in)
TUN
* Factory installed
EC71L002
Measuring piston protrusion
1. Install the dial gauge
1
and dial gauge
stand
2
to the cylinder contact surface and
set the scale of the dial gauge to zero.
Dial gauge:
YU-03097/90890-01252
Stand:
YU-01256
C
NOTE:
• Finish the break-in before changing the gas-
ket.
• A change of 0.1 mm (0.004 in) for the gasket
causes a change of approximately 0.23 cm 3
(0.008 lmp oz, 0.008 US oz) of the combus-
tion chamber volume.
• After break-in, change to an appropriate gas-
ket to allow the piston protrusion to be -0.15
mm (-0.006 in) to 0.05 mm (0.002 in).
CC CAUTION:
• Piston protruding amount must be a max-
imum 0.15 mm (0.006 in). Above this value,
the piston and cylinder head may contact
each other.
• Too much random piston protrusion at low
temperature may develop an abnormal
combustion (detonation), which may
adversely affect the intended performance
of the engine.
A
Air temperature
B
Piston protruding amount