1-14
1
Manual starter
Cylinder head assembly
Engine oil
Oil pressure (*2)
at 60 °C (140 °F) with SL
10W-30 engine oil and at
950 r/min
kPa
(kgf/cm
2
,
psi)
250.0 (2.50, 36.3)
Thermostat
Valve opening temperature °C (°F) 58.0–62.0 (136–144)
Fully open temperature °C (°F) 70.0 (158)
Fully open stroke mm (in) 3.0 (0.12)
(*1) Measuring conditions: Ambient temperature 20 °C (68 °F), wide open throttle, with spark plugs
removed from all cylinders.
When pulling the starter handle to crank the engine, the compression pressure may vary depending on
the speed at which the starter handle is pulled. (Manual starter model) The figures are for reference
only.
(*2) For details of the checking method, see “Checking the oil pressure” (7-1). The figures are for reference
only.
Item Unit
Model
F25MHA
F25EHA
Starter rope length mm (in) 2100.0 (82.7) —
Starter rope extended length mm (in)
1700.0–1900.0
(66.9–74.8)
—
Item Unit
Model
F25MHA
F25EHA
Cylinder head
Warpage limit mm (in) 0.10 (0.0039)
Valve stem
Diameter
Intake mm (in) 5.475–5.490 (0.2156–0.2161)
Exhaust mm (in) 5.460–5.475 (0.2150–0.2156)
Runout
Intake and exhaust mm (in) 0.010 (0.0004)
Valve guide
Inside diameter
Intake and exhaust mm (in) 5.500–5.512 (0.2165–0.2170)
Stem-to-guide clearance
Intake mm (in) 0.010–0.037 (0.0004–0.0015)
Exhaust mm (in) 0.025–0.052 (0.0010–0.0020)
Installation position mm (in) 16.3–16.7 (0.64–0.66)
Valve spring
Free length mm (in) 39.9 (1.57)
Tilt mm (in) 1.7 (0.07)
Item Unit
Model
F25EA
F25A T25A
Fuel system technical data / Power unit technical data
To Next Page
Loading...
