Yanmar 3TNV Series Service Manual page 92

(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
Stem O.D.
Clearance
Exhaust value
Stem O.D.
Clearance
Intake value
Stem O.D.
Clearance
Exhaust value
Stem O.D.
Clearance
Intake value Stem O.D.
Clearance
Exhaust value Stem O.D.
Clearance
Intake value Stem O.D.
Clearance
Exhaust value Stem O.D.
Clearance
Intake value Stem O.D.
Clearance
Exhaust value Stem O.D.
Clearance
4. Disassembly, Inspection and Reassembly of Engines
Place Standard
Guide I.D. 7.000 7.015
6.945 6.960
0.040 0.070
Guide I.D. 7.000 7.015
6.940 6.955
0.045 0.075
Guide I.D. 8.010 8.025
7.955 7.975
0.035 0.070
Guide I.D. 8.015 8.030
7.955 7.970
0.045 0.075
Guide I.D. 6.000 6.015
5.960 5.975
0.025 0.055
Guide I.D. 6.000 6.015
5.945 5.960
0.040 0.070
Guide I.D. 7.000 7.015
6.945 6.960
0.040 0.070
Guide I.D. 7.000 7.015
6.940 6.955
0.045 0.075
Guide I.D. 7.008 7.020
6.960 6.975
0.033 0.060
Guide I.D. 7.008 7.020
6.945 6.960
0.048 0.075
77
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