Servicing Specifications - wsm B2420 Workshop Manual

B2420, WSM

2. SERVICING SPECIFICATIONS

ENGINE BODY
Cylinder Head Surface
Top Clearance
Compression Pressure (When Cranking with Starter Motor)
Variance among Cylinders
Valve Clearance (Cold)
Valve Seat
Valve Seat (Angle)
Valve Face (Angle)
Valve Recessing
Valve Stem to Valve Guide
• Valve Stem
• Valve Guide
Valve Spring
Item
Flatness
Width
Intake
Exhaust
Intake
Exhaust
Clearance
O.D.
I.D.
Free Length
Setting Load
Setting Length
Tilt
1-S4
Factory Specification
–
0.55 to 0.75 mm
0.022 to 0.029 in.
3.73 to 4.11 MPa
2
38.0 to 42.0 kgf/cm
541 to 597 psi
–
0.145 to 0.185 mm
0.00571 to 0.00728 in.
2.12 mm
0.0835 in.
1.0 rad
60 °
0.79 rad
45 °
1.0 rad
60 °
0.79 rad
45 °
–0.050 to 0.25 mm
–0.0020 to 0.0098 in.
0.035 to 0.065 mm
0.0014 to 0.0025 in.
6.960 to 6.975 mm
0.2741 to 0.2746 in.
7.010 to 7.025 mm
0.2760 to 0.2765 in.
37.0 to 37.5 mm
1.46 to 1.47 in.
117.4 N / 31.0 mm
11.97 kgf / 31.0 mm
26.39 lbf / 1.22 in.
31.0 mm
1.22 in.
–
ENGINE
Allowable Limit
0.05 mm
0.002 in.
–
2.26 MPa
2
23.0 kgf/cm
327 psi
10 % or less
–
–
–
–
–
–
0.40 mm
0.016 in.
0.10 mm
0.0039 in.
–
–
36.5 mm
1.44 in.
100.0 N / 31.0 mm
10.20 kgf / 31.0 mm
22.48 lbf / 1.22 in.
–
1.0 mm
0.039 in.
KiSC issued 06, 2012 A