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Tohatsu M18E2 2-Stroke Specifications
The Tohatsu M18E2 is a two-stroke two-cylinder shallow water drive gasoline outboard engine. This engine has a carburetor fuel system, forced water cooling, and flywheel magneto CDI ignition system. A 17.9 cu.in (294 cc) outboard motor has a cylinder bore of 2.36" (60 mm), piston stroke of 2.05" (52 mm), and maximum power of 18 hp (13.2 kW) at 5200-5800 rpm. The boat motor is equipped with a forward-neutral-reverse gear shift, manual or electric starting system, 3-blades aluminum standard propeller, manual trim and tilt, and tiller handle or remote control steering system. The fuel tank has a capacity of 6.6 gal (25 liters).
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| General Technical Data |
Engine Model ................ Tohatsu M18E2 MF, M18E2 MP
Engine Type ................ 2-stroke two-cylinder gasoline outboard engine
Number of Cylinders ................ 2
Displacement, cu.in (cc) ................ 17.9 (294)
Cylinder Bore, in (mm) ................ 2.36 (60.0)
Piston Stroke, in (mm) ................ 2.05 (52.0)
Maximum Engine Power, hp (kW) ................ 18.0 (13.2)
Maximum Engine Speed, rpm ................ 5200-5800
Idle Speed, rpm ................ 950
Trolling Speed, rpm ................ 800
Lubrication System ................ Engine oil and gasoline mixture
Exhaust System ................ Through hub exhaust
Cooling System ................ Water cooling with thermostat
Ignition System ................ Flywheel magneto CDI
Starting System ................ Manual or electric
| Dimensions and Weight |
Overall Length (M18E2 MF), in (mm) ................ 34.2 (870)
Overall Length (M18E2 MP), in (mm) ................ 22.2 (565)
Overall Width (M18E2 MF), in (mm) ................ 13.6 (345)
Overall Width (M18E2 MP), in (mm) ................ 11.4 (290)
Overall Height (Short Shaft), in (mm) ................ 42 (1065)
Overall Height (Long Shaft), in (mm) ................ 47 (1195)
Transom Height (Short Shaft), in (mm) ................ 17 (435)
Transom Height (Long Shaft), in (mm) ................ 22 (560)
Outboard Weight (M18E2 MF, Short Shaft), lbs (kg) ................ 90.0 (41.0)
Outboard Weight (M18E2 MP, Short Shaft), lbs (kg) ................ 97.0 (44.0)
Outboard Weight (M18E2 MF, Long Shaft), lbs (kg) ................ 92.5 (42.0)
Outboard Weight (M18E2 MP, Long Shaft), lbs (kg) ................ 99.0 (45.0)
| Fuel System |
Fuel System Type ................ Carburetor
Fuel Type ................ Unleaded gasoline (87 or 91 octane minimum)
Fuel Tank Capacity, gal (L) ................ 6.6 (25.0)
| Gear Housing |
Shift System ................ Dog clutch
Gear Shift ................ F-N-R
Gear Ratio ................ 1.85:1
Gear Oil Capacity, qts (L) ................ 0.39 (0.37)
| Mid Section |
Trim System ................ Manual Trim and Tilt
Trim Position ................ 6
Transom Height (Short Shaft), in (mm) ................ 17 (435)
Transom Height (Long Shaft), in (mm) ................ 22 (560)
Steering System (M18E2 MF) ................ Tiller handle
Steering System (M18E2 MP) ................ Remote control
Steering Angle, deg ................ 80
Tilt Angle (Max), deg ................ 58
| Propeller Information |
Diameter, in (mm) ................ 9.2 (234), 9.25 (235)
Pitch, in (mm) ................ 6.1 (155), 8 (203), 9 (229), 10 (254), 11.5 (292)
Number Of Blade ................ 3
Material ................ Aluminum
| Maintenance Data |
Engine Fuel Type ................ Unleaded 87 or 91 octane minimum
Engine Oil Type ................ Genuine motor oil or recommended one (TCW-3)
Engine Oil and Fuel Ratio ................ Unleaded Gasoline 50. Genuine 2-stroke Engine Oil 1
Gear Lubricant Type ................ Genuine Gear Oil or API GL5, SAE 80, SAE 90
Gearcase Capacity, qts (L) ................ 0.39 (0.37)
Ignition Timing, degrees ................ 23 BTDC
Spark Plug Type ................ NGK B7HS-10 or BR7HS-10
Spark Plug Gap, in (mm) ................ 0.035-0.039 (0.9-1.0)
| Service Data |
Cylinder Bore Inside Diameter, in (mm) ................ 2.362-2.363 (60.00-60.01)
Piston to Cylinder Clearance, in (mm) ................ 0.0008-0.0014 (0.02-0.035)
Piston Skirt Diameter, in (mm) ................ 2.360-2.361 (59.95-59.97)
Piston to Piston Pin Clearance, in (mm) ................ 0.0020-0.0035 (0.05-0.09)
Top Ring End Gap, in (mm) ................ 0.008-0.016 (0.2-0.4)
Second Ring End Gap, in (mm) ................ 0.008-0.016 (0.2-0.4)
Top Ring Side Clearance, in (mm) ................ 0.0012-0.0027 (0.03-0.07)
Second Ring Side Clearance, in (mm) ................ 0.0008-0.0024 (0.02-0.06)
Connecting Rod Big End Side Clearance, in (mm) ................ 0.008-0.016 (0.20-0.40)
| Service Intervals |
Check Battery ................ Every 50 hours
Check Fuel Line ................ Every 50 hours
Check Anodes ................ Every 50 hours
Check Gear Oil ................ Every 50 hours
Check Propeller ................ Every 50 hours
Check Starter Rope ................ Every 50 hours
Check Spark Plug ................ Every 100 hours
Clean Fuel Tank ................ Every 100 hours
Check Cooling System ................ Every 100 hours
Check Water Pump ................ Every 100 hours
Check Carburetor ................ Every 100 hours
Ajust Ignition Timing ................ Every 100 hours
Change Gear Oil ................ Every 100 hours
Replace Spark Plug ................ Every 200 hours
Replace Water Pump Impeller ................ Every 200 hours
| Tightening Torques |
Cylinder head bolt, Nm (lb-ft) ................ 25.5 (19.0)
Magneto nut, Nm (lb-ft) ................ 88.5 (65.0)
Crankcase bolt, Nm (lb-ft) ................ 25.5 (19.0)
Intake manifold bolt, Nm (lb-ft) ................ 10 (7.4)
Exhaust cover bolt, Nm (lb-ft) ................ 10 (7.4)
Bracket nut, Nm (lb-ft) ................ 20 (15.0)
Stop switch, Nm (lb-ft) ................ 4 (3.0)
Propeller shaft housing, Nm (lb-ft) ................ 25 (18.0)
Drive shaft housing bolt, Nm (lb-ft) ................ 20 (15.0)
Gear oil plug, Nm (lb-ft) ................ 4 (3.0)
Spark plug, Nm (lb-ft) ................ 27 (20.0)
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| Engines Technical Specifications |