Lower Unit - TOHATSU BFT75A Service Manual

dummyhead dummyhead
SPECIFICATIONS
LRTA/XRTA/LRTC/XRTC type
Model
Description code
Type
Displacement
Bore x stroke
Rated power
Maximum torque
Compression ratio
Fuel consumption ratio
(at rated power)
Cooling system
Ignition system
Ignition timing
Spark plug Standard
Optional
Fuel supply system
Fuel injection system
Fuel injection nozzle
Fuel
Fuel pump
Lubrication system
Lubrication capacity
Starter system
Exhaust system

LOWER UNIT

Clutch
Gear ratio Forward
Reverse
Reduction
Gear case oil capacity
Propeller rotating direction
1-6
BF75DK3 BF80A
BEBAJ BEBLJ
73.0 x 89.4 mm (2.87 x 3.52 in)
55.2 kW (75 PS) 58.8 kW (80 PS)
at 5,500 min -1 at 5,500 min
(rpm)
118 N·m
(12.0 kgf·m, 87 lbf·ft)
340 g/kW·h 355 g/kW·h
Forced water circulation by impeller pump with thermostat
Fully transistorized, battery ignition
2.4°at 750 min
Electric and mechanical plunger type
Pressure lubrication by trochoid pump
4.7 liter (5.0 US qt, 4.1 Imp qt)
[Without oil filter replacement: 4.2 liter (4.4 US qt, 3.7 Imp qt)]
[With oil filter replacement: 4.4 liter (4.6 US qt, 3.9 Imp qt)]
Dog clutch (Forward – Neutral – Reverse)
0.95 liter (1.00 US qt, 0.84 Imp qt)
Clockwise (viewed from rear)
BF90DK4
BEBCJ
4-stroke, S.O.H.C., 4 cylinder
1,496 cm 3 (91.3 cu in)
66.2 kW (90 PS)
-1 at 5,800 min
(rpm) (rpm)
123 N·m
(12.5 kgf·m,
91 lbf·ft)
9.7: 1
350 g/kW·h
-1
(rpm) A.T.D.C
ZFR6K–9E (NGK)
IZFR6K–11E (NGK)
Programmed fuel injection
Electronic control
Multi-point type
Unleaded gasoline
Electric starter
Water exhaust
2.33 (28/12)
2.33 (28/12)
Spiral bevel gear
BF100A
BEBMJ
73.6 kW (100 PS)
-1 at 5,900 min -1
(rpm)
127 N·m
(13.0 kgf·m,
94 lbf·ft)
330 g/kW·h