Page 2299 of 2898
Height (h)Intake 7.0 - 7.1 (0.276 - 0.280) 6.60 - 6.70 (0.2598 - 0.2638)
Exhaust 6.7 - 6.8 (0.264 - 0.268) 6.3 - 6.4 (0.248 - 0.252)
Depth (H)Intake 8.83 - 9.13 (0.3476 - 0.3594)
Exhaust 9.06 - 9.36 (0.3567 - 0.3685)
Depth (L)Intake 36.53 - 36.98 (1.4382 - 1.4559)
Exhaust 36.53 - 37.01 (1.4382 - 1.4571)
SERVICE DATA AND SPECIFICATIONS (SDS)YD
Valve Seat (Cont'd)
EM-165
Page 2300 of 2898
Camshaft and Camshaft Bearing=NJEM0080Unit: mm (in)
Standard Limit
Camshaft journal to bearing clearance 0.045 - 0.086 (0.0018 - 0.0034) 0.045 - 0.086 (0.0018 - 0.0034)
Inner diameter of camshaft bearingNo. 1
30.500 - 30.521 (1.2008 - 1.2016)
No. 2, 3, 4, 5
24.000 - 24.021 (0.9449 - 0.9457)Ð
Outer diameter of camshaft journalNo. 1
30.435 - 30.455 (1.1982 - 1.1990)
No. 2, 3, 4, 5
23.935 - 23.955 (0.9423 - 0.9431)Ð
Camshaft runout [TIR*] Ð 0.02 (0.0008)
Camshaft sprocket runout [TIR*] Less than 0.15 (0.0059) Ð
Camshaft end play 0.070 - 0.148 (0.0028 - 0.0058) 0.24 (0.0094)
*: Total indicator reading
EM671
Cam height ªAºIntake 39.505 - 39.695 (1.5553 - 1.5628)
Exhaust 39.905 - 40.095 (1.5711 - 1.5785)
Wear limit of cam height 0.15 (0.0059)
Valve timing
EM120
Unit: degree
a bcde f
224 212 2 30 ±2 46
SERVICE DATA AND SPECIFICATIONS (SDS)YD
Camshaft and Camshaft Bearing
EM-166
Page 2301 of 2898

Cylinder BlockNJEM0081Unit: mm (in)
JEM207G
Surface flatnessStandardLess than 0.03 (0.0012)
Limit0.04 (0.0016)
Cylinder bore Inner diameterStandardGrade No. 1 86.000 - 86.010 (3.3858 - 3.3862)
Grade No. 2 86.010 - 86.020 (3.3862 - 3.3866)
Grade No. 3 86.020 - 86.030 (3.3866 - 3.3870)
Wear limit 0.07 (0.0028)
Out-of-round (X þ Y)Less than 0.015 (0.0006)
Taper (AþBþC)Less than 0.010 (0.0004)
Main journal inner
diameter grade
(Without bearing)Grade No. 0
Grade No. 1
Grade No. 266.654 - 66.663 (2.6242 - 2.6245)
66.663 - 66.672 (2.6245 - 2.6249)
66.672 - 66.681 (2.6249 - 2.6252)
Difference in inner
diameter between
cylindersLimitLess than 0.05 (0.0020)
Piston, Piston Ring and Piston PinNJEM0082AVAILABLE PISTONNJEM0082S01Unit: mm (in)
SEM882E
Piston skirt diameter ªAº StandardGrade No. 1 85.920 - 85.930 (3.3827 - 3.3831)
Grade No. 2 85.930 - 85.940 (3.3831 - 3.3835)
Grade No. 3 85.940 - 85.950 (3.3835 - 3.3839)
0.25 (0.0098) oversize (Service) 86.170 - 86.200 (3.3925 - 3.3937)
0.50 (0.0197) oversize (Service) 86.420 - 86.450 (3.4024 - 3.4035)
ªaº dimension58.0 (2.28)
Piston pin hole diameter27.997 - 28.005 (1.1022 - 1.1026)
SERVICE DATA AND SPECIFICATIONS (SDS)YD
Cylinder Block
EM-167
Page 2302 of 2898

Piston clearance to cylinder block 0.070 -0.090 (0.0028 - 0.0035)
PISTON RINGNJEM0082S02Unit: mm (in)
Standard Limit
Side clearanceTop 0.120 - 0.180 (0.0047 - 0.0071) 0.2 (0.008)
2nd 0.050 - 0.090 (0.0020 - 0.0035) 0.1 (0.004)
Oil ring 0.030 - 0.070 (0.0012 - 0.0028) Ð
End gapTop 0.20 - 0.35 (0.0079 - 0.0138) 1.0 (0.039)
2nd 0.39 - 0.54 (0.0154 - 0.0213) 1.0 (0.039)
Oil (rail ring) 0.25 - 0.50 (0.0098 - 0.0197) 1.0 (0.039)
PISTON PINNJEM0082S03Unit: mm (in)
Piston pin outer diameter27.994 - 28.000 (1.1021 - 1.1024)
Interference fit of piston pin to piston 0.002 - 0.006 (0.0001 - 0.0002)
Piston pin to connecting rod bushing clearanceStandard 0.026 - 0.044 (0.0010 - 0.0017)
Limit 0.057 (0.0022)
*: Values measured at ambient temperature of 20ÉC (68ÉF)
Connecting RodNJEM0083Unit: mm (in)
Center distance157.5 (6.201)
Bend [per 100 (3.94)] Limit 0.12 (0.0047)
Torsion [per 100 (3.94)] Limit 0.12 (0.0047)
Connecting rod small end inner diameter 30.080 - 31.000 (1.1842 - 1.2205)
Piston pin bushing inner diameter* 28.026 - 28.038 (1.1034 - 1.1039)
Connecting rod big end inner diameter 55.000 - 55.013 (2.1654 - 2.1659)
Side clearanceStandard 0.200 - 0.350 (0.0079 - 0.0138)
Limit 0.4 (0.016)
*: After installing in connecting rod
CrankshaftNJEM0084Unit: mm (in)
Main journal dia. ªDmº gradeGrade No. 0
Grade No. 1
Grade No. 262.967 - 62.975 (2.4790 - 2.4793)
62.959 - 62.967 (2.4787 - 2.4790)
62.951 - 62.959 (2.4784 - 2.4787)
Pin journal dia. ªDpºGrade No. 0 51.968 - 51.974 (2.0460 - 2.0462)
Grade No. 1 51.961 - 51.968 (2.0457 - 2.0460)
Grade No. 2 51.954 - 51.961 (2.0454 - 2.0457)
Center distance ªrº46.97 - 47.03 (1.8492 - 1.8516)
Out-of-round (X þ Y) Standard/Limit Less than 0.003 (0.0001)/Less than 0.005 (0.0002)
Taper (A þ B) Standard/Limit Less than 0.003 (0.0001)/Less than 0.005 (0.0002)
Runout [TIR*]Standard Less than 0.05 (0.0020)
Limit Less than 0.10 (0.0039)
SERVICE DATA AND SPECIFICATIONS (SDS)YD
Piston, Piston Ring and Piston Pin (Cont'd)
EM-168
Page 2303 of 2898

Free end playStandard 0.10 - 0.25 (0.0039 - 0.0098)
Limit 0.30 (0.0118)
SEM645EM715
*: Total indicator reading
Available Main BearingNJEM0085
SEM255G
Grade number Thickness ªTº mm (in) Width ªWº mm (in) Identification color
0 1.816 - 1.820 (0.0715 - 0.0717)
19.9 - 20.1 (0.783 - 0.791)Black
1 1.820 - 1.824 (0.0717 - 0.0718) Red or Brown
2 1.824 - 1.828 (0.0718 - 0.0720) Green
3 1.828 - 1.832 (0.0720 - 0.0721) Yellow
4 1.832 - 1.836 (0.0721 - 0.0723) Blue
UNDERSIZENJEM0085S01Unit: mm (in)
Thickness Main journal diameter ªDmº
0.25 (0.0098) 1.949 - 1.953 (0.0767 - 0.0769)Grind so that bearing clearance is the specified
value.
Available Connecting Rod BearingNJEM0086CONNECTING ROD BEARINGNJEM0086S01
Grade number Thickness ªTº mm (in) Width ªWº mm (in) Identification color (mark)
0 1.492 - 1.496 (0.0587 - 0.0589)
22.9 - 23.1
(0.902 - 0.909)Black
1 1.496 - 1.500 (0.0589 - 0.0591) Brown
2 1.500 - 1.504 (0.0591 - 0.0592) Green
SERVICE DATA AND SPECIFICATIONS (SDS)YD
Crankshaft (Cont'd)
EM-169
Page 2304 of 2898
UNDERSIZENJEM0086S02Unit: mm (in)
Thickness Crank pin journal diameter ªDpº
0.08 (0.0031) 1.536 - 1.540 (0.0605 - 0.0606)
Grind so that bearing clearance is the specified
value. 0.12 (0.0047) 1.556 - 1.560 (0.0613 - 0.0614)
0.25 (0.0098) 1.621 - 1.625 (0.0638 - 0.0640)
Miscellaneous ComponentsNJEM0087Unit: mm (in)
Flywheel runout [TIR]*Less than 0.15 (0.0059)
*: Total indicator reading
BEARING CLEARANCENJEM0087S01Unit: mm (in)
Main bearing clearanceStandard 0.039 - 0.066 (0.0015 - 0.0026)
Limit 0.10 (0.0039)
Connecting rod bearing clearanceStandard 0.031 - 0.061 (0.0012 - 0.0024)
Limit 0.09 (0.0035)
SERVICE DATA AND SPECIFICATIONS (SDS)YD
Available Connecting Rod Bearing (Cont'd)
EM-170
Page 2305 of 2898

ACCELERATOR CONTROL, FUEL &
EXHAUST SYSTEMS
SECTION
FE
CONTENTS
QG
PREPARATION...............................................................2
Special Service Tools ..................................................2
Commercial Service Tools ...........................................2
ACCELERATOR CONTROL SYSTEM...........................3
Removal and Installation .............................................3
Adjusting Accelerator Wire ..........................................3
MODELS WITH THROTTLE OPENER.........................3
MODELS WITHOUT THROTTLE OPENER..................4
FUEL SYSTEM................................................................5
Checking Fuel Lines ....................................................5
Removal and Installation .............................................5
Fuel Tank .....................................................................6
REMOVAL.................................................................7
INSTALLATION........................................................ 11
Fuel Pump, Fuel Level Sensor Unit and Fuel
Filter ...........................................................................12
REMOVAL...............................................................12
INSTALLATION........................................................14
EXHAUST SYSTEM......................................................15
Checking Exhaust System.........................................15
Removal and Installation ...........................................15
YD
PREPARATION.............................................................18
Special Service Tool ..................................................18Commercial Service Tool ...........................................18
ACCELERATOR CONTROL SYSTEM.........................19
Removal and Installation ...........................................19
Inspection...................................................................19
FUEL SYSTEM..............................................................20
Checking Fuel Lines ..................................................20
Water Draining from Fuel Filter .................................20
DRAINING WATER..................................................20
FUEL FILTER CHECK..............................................20
Changing Fuel Filter ..................................................20
REMOVAL...............................................................20
INSTALLATION........................................................21
Bleeding Fuel Filter....................................................21
Checking Priming Pump ............................................21
Checking Water in Fuel Filter Sensor (where
fitted) ..........................................................................22
Removal and Installation ...........................................22
Fuel Tank ...................................................................23
REMOVAL...............................................................25
INSTALLATION........................................................28
Fuel Level Sensor Unit ..............................................29
REMOVAL...............................................................30
INSTALLATION........................................................31
EXHAUST SYSTEM......................................................32
Checking Exhaust System.........................................32
Removal and Installation ...........................................32
Page 2306 of 2898
Special Service ToolsNJFE0029
Tool number
Tool nameDescription
KV10114400
Heated oxygen sensor
wrench
NT636
Loosening or tightening front and rear
heated oxygen sensors
a: 22 mm (0.87 in)
KV999G0010
Fuel tank lock ring
socket
NT057
Removing and installing fuel tank lock
ring
Commercial Service ToolsNJFE0030
Tool number
Tool nameDescription
Oxygen sensor thread
cleaner
AEM488
Reconditioning the exhaust system threads
before installing a new oxygen sensor (Use
with anti-seize lubricant shown below.)
a: 18 mm dia. with pitch 1.5 mm for zir-
conia oxygen sensor
b: 12 mm dia. with pitch 1.25 mm for
titania oxygen sensor
Anti-seize lubricant
(Permatex 133AR or
equivalent meeting MIL
specification MIL-A-
907)
AEM489
Lubricating oxygen sensor thread cleaning
tool when reconditioning exhaust system
threads
PREPARATIONQG
Special Service Tools
FE-2