TECHNICAL DATA
ENGINE
Number of Cylinders 1
Type Two-Stroke
Bore (3.75 in.)
Stroke (2.756 in.)
Volume 16.3 cu. in.
Compression Ratio 6.5:1
Output/RPM 7 HP/3000 RPM
Cooling Raw water through gear type pump
Fuel Diaphragm type in connection with carburetor, operated by
pressure fluctuations in crankcase
Carburetor Tillotson HL
Fuel 3 to 3.5 % oil/gasoline mixture or oil/gasoline/kerosene
mixture, of which 3 to
3.5 % oil. 15 to 20% gasoline and the rest kerosene
(gasoline 92 oct.)
Engine Lubrication Two-stroke engine oil
Reverse/Reduction Gear Lubrication SAE 140 IN TEMPERATURES ABOVE +10o C
SAE 90 in temperatures below +10o C
Fuel Consumption (continuous drive) 2.6 to 3.2 Qts/hr
Spark Plug (in normal conditions and
temperate climate) Bosch W 175 ZIM
Champion L-86
AC M 44 F
Autolite AE 6
NGK B-7H
or similar
(In exceptional conditions use
either next hotter plug - light
work, cold conditions - or next
colder plug - heavy work, hot
conditions)
Spark Plug Gap 0.5 mm (0.020 in. )
Fly Wheel Magneto Bosch, light output 6V/16W
Magneto Breaker Cap 0.45 mm (0.016 in. )
Ignition Timing 30o
Motor Generator 12 V / 14A max.
Reverse/Reduction Gear gear ratio 2:1
FITS AND CLEARANCES
Piston/Cylinder 6.06 - 0.09mm (.002 in. / .0035 in.)
End Gap of Piston Ring 0.15 - 0.35 mm ( .006 in. / .014 in. )
Side Clearance of Upper Piston
Ring in Groove 0.060 - 0.085 mm ( .002 in. / .003 in. )
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