Cub Cadet 8454 - Manual (Page 49)

ENGINE
2-27 D569-W02 May-2003
3.2 SERVICING SPECIFICATIONS
A. ENGINE BODY
a . Cylinder Head
0.75 ~ 0.9 mm
0.0295 ~ 0.0354 in.
1.3 ~ 1.5 mm
0.0512 ~ 0.0591 in.
1.15 ~ 1.25 mm
0.0453 ~ 0.0492 in.
3.24 ~ 3.73 MPa
33 ~ 38 kgf/cm 2
469 ~ 540 psi
0.05 mm / 100 mm
0.002 in. / 3.94 in.
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2.55 MPa
26 kgf/cm 2
370 psi
Item Factory Specification Allowable Limit
Cylinder Head Surface Flatness
Top Clearance
Cylinder Head Gasket Thickness Free
Tightened
Compression Pressure
(When cranking with starting motor)
* Variance of compression pressure among cylinders should be 10% or less.
b. Valves
0.25 mm 0.0098 in.
0.30 mm 0.0118 in.
1.047 rad. 60°
0.785 rad. 45°
1.047 rad. 60°
0.785 rad. 45°
0.2 ~ 0.5 mm
0.0079 ~ 0.0197 in.
0.040 ~ 0.070 mm
0.00157 ~ 0.00276 in.
7.960 ~ 7.975 mm
0.31339 ~ 0.31398 in.
8.015 ~ 8.030 mm
0.31555 ~ 0.31614 in.
0.8 mm
0.0315 in.
0.10 mm
0.0039 in.
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Item
Factory Specification
Allowable Limit
Valve Clearance (Cold) IN.
EX.
Valve Seat Angle IN.
EX.
Valve Face Angle IN.
EX.
Valve Recessing
Clearance Between Valve Stem and Valve
Guide
Valve Stem O.D
Valve Stem I.D
c. Valve Timing
0.140rad 8° before T.D.C
0.611rad 35° after B.D.C
0.785rad 45° before B.D.C
0.140rad 8° after T.D.C
Item Factory Specification Allowable Limit
Inlet Valve Open
Close
Exhaust Valve Open
Close
015 mm 0.0059 in.
0.15 mm 0.0059 in.
1.047 rad. 60°
0.785 rad. 45°
1.047 rad. 60°
0.785 rad. 45°
0.2 ~ 0.5 mm
0.0079 ~ 0.0197 in.
0.040 ~ 0.070 mm
0.00157 ~ 0.00276 in.
7.960 ~ 7.975 mm
0.31339 ~ 0.31398 in.
8.015 ~ 8.030 mm
0.31555 ~ 0.31614 in.
4A220 4A200T
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