Maintenance - TOHATSU BFT75A Service Manual

dummyhead dummyhead
SERVICE INFORMATION
MAINTENANCE STANDARDS
SERVICE INFORMATION
ENGINE
Part
Engine Idle speed (in neutral)
Trolling speed
Cylinder compression
Compression gap between cylinders
Spark plugs Gap
Valves Valve clearance
Stem O.D.
Overall length
Valve O.D
Stem-to-guide
clearance
Valve seats Seat width
Seat installation height
Valve guides Guide I.D.
Guide installation height
Valve springs Free length
Rocker arms Rocker arm I.D.
Rocker arm shaft O.D.
Rocker arm-to-rocker
arm shaft clearance
Pistons Skirt O.D.
Piston-to-cylinder clearance
Pin bore I.D.
Ring groove width
Piston pins Pin O.D.
Pin-to-pin bore clearance
Piston rings Ring side clearance
Ring end gap
Ring thickness
Cylinder head Warpage
Camshaft journal I.D.
Head height
Cylinder block Cylinder sleeve I.D.
Difference between top and bottom
points of sleeve I.D.
Warpage
2-2
Item
750 ± 50 min
650 – 1,000 min
1.45 – 1.65 MPa
(14.8 – 16.8 kgf/cm
at 300 min
Standard 0.80 – 0.90 (0.031 – 0.035)
Optional 1.00 – 1.10 (0.039 – 0.043)
IN 0.15 – 0.19 (0.006 – 0.007)
EX 0.26 – 0.30 (0.010 – 0.012)
IN 5.480 – 5.490 (0.2157 – 0.2161)
EX 5.450 – 5.460 (0.2146 – 0.2150)
IN 118.55 – 119.15 (4.667 – 4.691)
EX 117.25 – 117.85 (4.616 – 4.640)
IN 27.85 – 28.15 (1.096 – 1.108)
EX 22.85 – 23.15 (0.900 – 0.911)
IN 0.020 – 0.050 (0.0008 – 0.0020)
EX 0.050 – 0.080 (0.0020 – 0.0032)
IN 0.85 – 1.15 (0.033 – 0.045)
EX 1.25 – 1.55 (0.049 – 0.061)
IN 46.0 – 46.6 (1.81 – 1.83)
EX 46.1 – 46.7 (1.81 – 1.84)
IN/EX 5.51 – 5.53 (0.217 – 0.218)
IN/EX 15.85 – 16.35 (0.624 – 0.644)
IN 48.54 (1.911)
EX 55.29 (2.177)
IN/EX 20.012 – 20.030 (0.7879 – 0.7886)
19.972 – 19.993 (0.7863 – 0.7871)
IN/EX 0.019 – 0.058 (0.0007 – 0.0023)
72.98 – 72.99 (2.873 – 2.874)
0.01– 0.04 (0.0004 – 0.0016)
18.010– 18.014 (0.7091 – 0.7092)
Top 1.050 – 1.060 (0.0413 – 0.0417)
Second 1.220 – 1.230 (0.0480 – 0.0484)
Oil 2.005 – 2.020 (0.0789 – 0.0795)
17.996 – 18.000 (0.7085 – 0.7087)
0.010 – 0.018 (0.0004 – 0.0007)
Top 0.065 – 0.090 (0.0026 – 0.0035)
Second 0.030 – 0.055 (0.0012 – 0.0022)
Top 0.15 – 0.30 (0.006 – 0.012)
Second 0.35 – 0.50 (0.014 – 0.020)
Oil 0.20 – 0.70 (0.008 – 0.028)
Top 0.970 – 0.985 (0.0382 – 0.0388)
Second 1.175 – 1.190 (0.0463 – 0.0469)
41.995 – 42.019 (1.6533 – 1.6543)
119.9 – 120.1 (4.72 – 4.73)
73.00 – 73.02 (2.874 – 2.875)
0.07 (0.003) Max
Standard
-1 (rpm)
-1
(rpm)
2
, 211 – 239 psi)
-1 (rpm)
–
0.08 (0.003) Max.
–
Unit: mm (in)
Service limit
–
–
0.93 MPa
2
(9.5 kgf/cm , 135 psi)
0.2 MPa
(2.0 kgf/cm 2 , 28 psi)
–
1.30 (0.051)
–
–
5.450 (0.2146)
5.420 (0.2134)
–
–
–
–
0.080 (0.0032)
0.110 (0.0043)
1.60 (0.063)
2.00 (0.079)
46.9 (1.85)
47.0 (1.85)
5.55 (0.219)
–
–
–
–
–
0.080 (0.0032)
72.97 (2.873)
0.05 (0.0020)
–
–
–
–
–
0.020 (0.0008)
0.150 (0.0059)
0.130 (0.0051)
0.60 (0.024)
0.65 (0.026)
0.80 (0.031)
–
–
0.08 (0.003) Min.
–
–
73.07 (2.877)
0.05 (0.002)
0.10 (0.004)