Servicing Specifications - wsm STW37 Workshop Manual

STW34, STW37, STW40, WSM

2. SERVICING SPECIFICATIONS

ENGINE BODY
Valve Clearance (When Cold)
Compression Pressure
(When Cranking with Starting Motor)
Difference among Cylinders
Top Clearance
Cylinder Head Surface
Valve Recessing
Valve Stem to Valve Guide
• Valve Stem
• Valve Guide
Valve Face
Valve Seat
Valve Seat
Valve Timing (Intake Valve)
Valve Timing (Exhaust Valve)
Item
Flatness
Protrusion
Recessing
Clearance
O.D.
I.D.
Angle (Intake)
Angle (Exhaust)
Width (Intake)
Width (Exhaust)
Angle (Intake)
Angle (Exhaust)
Open
Close
Open
Close
1-S5
Factory Specification
0.18 to 0.22 mm
0.0071 to 0.0086 in.
3.6 to 4.0 MPa /
-1
290 min (rpm)
2
36 to 41 kgf/cm /
-1
290 min (rpm)
520 to 580 psi /
-1
290 min (rpm)
–
0.55 to 0.70 mm
0.022 to 0.027 in.
–
0.05 mm
0.002 in.
0.15 mm
0.0059 in.
0.040 to 0.070 mm
0.0016 to 0.0027 in.
7.960 to 7.975 mm
0.3134 to 0.3139 in.
8.015 to 8.030 mm
0.3156 to 0.3161 in.
1.0 rad
60 °
0.79 rad
45 °
2.12 mm
0.0835 in.
2.12 mm
0.0835 in.
1.0 rad
60 °
0.79 rad
45 °
0.21 rad (12 °)
before T.D.C.
0.63 rad (36 °)
after B.D.C.
1.0 rad (60 °)
before B.D.C.
0.21 rad (12 °)
after T.D.C.
ENGINE
Allowable Limit
–
2.5 MPa /
-1
290 min (rpm)
2
26 kgf/cm /
-1
290 min (rpm)
370 psi /
-1
290 min (rpm)
10 % or less
–
0.05 mm / 500 mm
0.002 in. / 19.7 in.
–
0.40 mm
0.016 in.
0.10 mm
0.0039 in.
–
–
–
–
–
–
–
–
–
–
KiSC issued 11, 2014 A