2-2
dummyhead
dummyhead
SERVICE INFORMATION
SERVICE INFORMATION
MAINTENANCE STANDARDS
ENGINE
Unit: mm (in)
Part
Item
Standard
Service limit
Engine
Idle speed (in neutral)
650 ± 50 min
-1
(rpm)
–
Trolling speed
650 ± 50 min
-1
(rpm)
–
Cylinder compression
1,450 – 1,690 kPa (15 – 17 kgf/cm
2
,
210 – 245 psi) at 200 min
-1
(rpm)
–
Ignition timing
At idle
0° at 650 min
-1
(rpm)
–
Spark plugs
Gap
Standard
1.00 – 1.10 (0.039 – 0.043)
–
Optional
1.00 – 1.10 (0.039 – 0.043)
1.30 (0.051)
Valves
Valve clearance
IN
0.20 – 0.24 (0.008 – 0.009)
–
EX
0.28 – 0.32 (0.011 – 0.013)
–
Stem O.D.
IN
5.485 – 5.495 (0.2159 – 0.2163)
5.455 (0.2148)
EX
5.450 – 5.460 (0.2146 – 0.2150)
5.420 (0.2134)
Guide I.D.
IN/EX
5.515 – 5.530 (0.2171 – 0.2177)
5.55 (0.219)
Guide extrusion amount
IN
21.20 – 22.20 (0.835 – 0.874)
–
EX
20.63 – 21.63 (0.812 – 0.852)
–
Stem-to-guide
clearance
IN
0.020 – 0.045 (0.0008 – 0.0018)
0.080 (0.0032)
EX
0.055 – 0.080 (0.0022 – 0.0032)
0.120 (0.0047)
Seat width
IN/EX
1.25 – 1.55 (0.049 – 0.061)
2.0 (0.08)
Seat installation height
IN
46.75 – 47.55 (1.841 – 1.872)
47.80 (1.882)
EX
46.68 – 47.48 (1.838 – 1.869)
47.73 (1.879)
Spring free length
IN
51.32 (2.020)
–
EX
53.48 (2.106)
–
Rocker arms
Rocker arm I.D.
IN
20.019 – 20.039 (0.7881 – 0.7889)
–
EX
20.019 – 20.049 (0.7881 – 0.7893)
–
Rocker arm shaft O.D.
IN/EX
19.972 – 19.993 (0.7863 – 0.7871)
–
Rocker arm-to-rocker
arm shaft clearance
IN
0.026 – 0.067 (0.0010 – 0.0026)
0.067 (0.0026)
EX
0.026 – 0.077 (0.0010 – 0.0030)
0.077 (0.0030)
Pistons
Skirt O.D.
88.974 – 88.984 (3.5029 – 3.5033)
88.964 (3.5025)
Piston-to-cylinder clearance
0.016 – 0.041 (0.0006 – 0.0016)
0.080 (0.0032)
Pin bore I.D.
21.960 – 21.963 (0.8646 – 0.8647)
–
Pin O.D.
21.961 – 21.965 (0.8646 – 0.8648)
21.954 (0.8643)
Pin-to-pin bore clearance
–0.005 – +0.002
(–0.0002 – +0.0001)
0.004 (0.0002)
Ring groove width
Top/Second
1.220 – 1.230 (0.0480 – 0.0484)
1.25 (0.049)
Oil
2.805 – 2.825 (0.1104 – 0.1112)
2.85 (0.112)
Piston rings
Ring side clearance
Top
0.035 – 0.060 (0.0014 – 0.0024)
0.13 (0.005)
Second
0.030 – 0.055 (0.0012 – 0.0022)
0.13 (0.005)
Ring end gap
Top
0.20 – 0.35 (0.008 – 0.014)
0.6 (0.02)
Second
0.40 – 0.55 (0.016 – 0.022)
0.7 (0.03)
Oil
0.20 – 0.70 (0.008 – 0.028)
0.8 (0.03)
Ring thickness
Top
1.170 – 1.185 (0.0461 – 0.0467)
–
Second
1.175 – 1.190 (0.0463 – 0.0469)
–
Cylinder head
Warpage
–
0.05 (0.002)
Camshaft journal I.D.
43.000 – 43.024 (1.6929 – 1.6939)
–
Head height
120.95 – 121.05 (4.762 – 4.766)
–
Cylinder head bolt/washer O.D.
11.3 (0.44)
–
Cylinder block
Cylinder sleeve I.D.
89.000 – 89.015 (3.5039 – 3.5045)
89.065 (3.5065)
Warpage
0.07 (0.003) Max.
0.10 (0.004)
Difference between upper and lower parts
of sleeve I.D.
–
0.05 (0.002)
Difference between upper and lower parts
of connecting rod bolt O.D.
0 – 0.10 (0 – 0.004)
–
Connecting rods
Small end I.D.
21.970 – 21.976 (0.8650 – 0.8652)
–
Small end-to-piston pin clearance
0.005 – 0.015 (0.0002 – 0.0006)
0.019 (0.0007)
Big end axial clearance
0.15 – 0.35 (0.006 – 0.014)
0.45 (0.018)
Connecting rod big end oil clearance
0.020 – 0.044 (0.0008 – 0.0017)
0.05 (0.002)
Содержание BFT 250A
Страница 11: ...1 1 1 dummytext 1 GENERAL INFORMATION SERIAL NUMBER LOCATION 1 2 SPECIFICATIONS 1 2 DIMENSIONAL DRAWING 1 4...
Страница 92: ...MEMO dummyhead dummyhead...
Страница 122: ...MEMO dummyhead dummyhead...
Страница 250: ...MEMO dummyhead dummyhead...
Страница 252: ...6 2 dummyhead dummyhead ENGINE COVER COVER LOCK ENGINE COVER COVER LOCK COMPONENT LOCATION 10 N m 1 0 kgf m 7 lbf ft...
Страница 308: ...10 2 dummyhead dummyhead OTHER ELECTRICAL OTHER ELECTRICAL SYSTEM LOCATION POWER TILT RELAY FUSE RELAY JUNCTION BOX...
Страница 322: ...MEMO dummyhead dummyhead...
Страница 324: ...11 2 dummyhead dummyhead COOLING SYSTEM COOLING SYSTEM COMPONENT LOCATION 20 N m 2 0 kgf m 15 lbf ft...
Страница 325: ...11 3 dummyhead dummyhead COOLING SYSTEM TOOLS LIST Attachment 42 x 47 mm 07746 0010300 Driver 07749 0010000...
Страница 342: ...MEMO dummyhead dummyhead...
Страница 344: ...12 2 dummyhead dummyhead LUBRICATION SYSTEM LUBRICATION SYSTEM COMPONENT LOCATION 10 N m 1 0 kgf m 7 lbf ft...
Страница 359: ...13 3 dummyhead dummyhead ENGINE REMOVAL INSTALLATION TOOL LIST Engine hanger VSB02C000021...
Страница 371: ...14 3 dummyhead dummyhead CYLINDER HEAD 39 2 N m 4 0 kgf m 29 lbf ft 50 53...
Страница 373: ...14 5 dummyhead dummyhead CYLINDER HEAD Air supply attachment 07VAJ P8A010A...
Страница 414: ...MEMO dummyhead dummyhead...
Страница 454: ...MEMO dummyhead dummyhead...
Страница 552: ...MEMO dummyhead dummyhead...
Страница 554: ...18 2 dummyhead dummyhead MOUNT MOUNT COMPONENT LOCATION 83 N m 8 5 kgf m 61 lbf ft...
Страница 564: ...19 2 dummyhead dummyhead TRIM TILT TRIM TILT COMPONENT LOCATION 34 N m 3 5 kgf m 25 lbf ft 34 N m 3 5 kgf m 25 lbf ft...
Страница 606: ...MEMO dummyhead dummyhead...
Страница 608: ...20 2 dummyhead dummyhead CONTROLS CONTROLS COMPONENT LOCATION...
Страница 621: ...21 1 21 dummytext 21 TECHNICAL FEATURES SHIFT EFFORT REDUCTION SYSTEM 21 2 CHARGE OUTPUT ENHANCEMENT WHEN IDLING 21 4...
Страница 628: ...22 4 dummyhead dummyhead WIRING DIAGRAMS...