Takeuchi TB 175 Handbuch Seite 791

(2) Valve guide
Mainly check damage and wear on the inside wall.
Apply the service part code when replacing a part.
Model
Suction
3TNV82A
(2-valve)
Exhaust
4TNV84
Suction
3TNV84(T)
3/4TNV88
Exhaust
(2-valve)
4TNV84T
Suc./Exh.
(4-valve)
4TNV94L
4TNV98(T) Suc./Exh.
(4-valve)
Suction
4TNV106(T)
(4-valve)
Exhaust
Valve stem clearance
Model
3TNV82A
(2-valve head)
4TNV84
3TNV84 (T)
3/4TNV88
(2-valve head)
4TNV84T
(4-valve head)
4TNV94L
4TNV98 (T)
(4-valve head)
4TNV106(T)
(4-valve head)
Service part code
124060-11800
119802-11810
120130-11860
129150-11810
119717-11800
129907-11800
123907-11800
123907-11810
Part name
Intake value
Exhaust value
Intake value
Exhaust value
Intake value
Exhaust value
Intake value
Exhaust value
Intake value
Exhaust value
4. Disassembly, inspection and reassembly of engines
a
Place
Guide I.D. 7.000 to 7.015
Stem O.D. 6.945 to 6.960
Clearance 0.040 to 0.070
Guide I.D. 7.000 to 7.015
Stem O.D. 6.940 to 6.955
Clearance 0.045 to 0.075
Guide I.D. 8.010 to 8.025
Stem O.D. 7.955 to 7.975
Clearance 0.035 to 0.070
Guide I.D. 8.015 to 8.030
Stem O.D. 7.955 to 7.970
Clearance 0.045 to 0.075
Guide I.D. 6.000 to 6.015
Stem O.D. 5.960 to 5.975
Clearance 0.025 to 0.055
Guide I.D. 6.000 to 6.015
Stem O.D. 5.945 to 5.960
Clearance 0.040 to 0.070
Guide I.D. 7.000 to 7.015
Stem O.D. 6.945 to 6.960
Clearance 0.040 to 0.070
Guide I.D. 7.000 to 7.015
Stem O.D. 6.940 to 6.955
Clearance 0.045 to 0.075
Guide I.D. 7.008 to 7.020
Stem O.D. 6.960 to 6.975
Clearance 0.033 to 0.060
Guide I.D. 7.008 to 7.020
Stem O.D. 6.945 to 6.960
Clearance 0.048 to 0.075
77
Measuring positions
b c
Valve guide inside diameter
Measuring positions
Valve stem outside diameter
Standard
A B
Limit
7.08
6.90
0.18
7.08
6.90
0.18
8.10
7.90
0.18
8.10
7.90
0.18
6.08
5.90
0.15
6.08
5.90
0.17
7.08
6.90
0.17
7.08
6.90
0.17
7.08
6.92
0.16
7.08
6.90
0.18