DR Power RapidFire 5.5 HP Subaru (July 2013 - Present) Engine Manual - Manual (Page 19)

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XI. Specifications
1) MAIN SPECIFICATION
L×W×H 390×320×345mm
Dry Weight 16 kg
Gasoline Engine Type 4-Stroke, OHV, Single Cylinder
Displacement 179ml
Compression Ratio 8.5:1
Bore × Stroke 65×54mm
Maximum Output Power 3.5kW/3,600r/
min
Maximum Torque 9.5N·m
/2,500r/min
Cooling System Forced Air-cooled
Ignition System Transistorized Magneto Ignition (TCI)
Spark Plug F6RTC or equivalent
Lubrication System Forced Splash
PTO Shaft Rotation Counterclockwise
DATA ADJUSTMENT:
Items Technical Data
Spark Plug Clearance 0.7- 0.8mm
Valve Clearance (Cold Engine) Intake: 0.10-0.15mm Exhaust: 0.15-0.20mm
2) TORQUE OF IMPORTANT BOLTS
Items Specifications Torque Valve
N·m Kg·m
Connection-Rod Bolt M6×1.25(special) 13 1.3
Cylinder Head Bolt M10×1.25 35 3.5
Flywheel Nut M14×1.5(special) 85 8.5
Lock Nut of Rocker
Arm Shaft M6×0.75 10 1.0
Rocker Arm Stud M8×1.25(special) 24 2.4
Crankcase Bolt M8×1.25 28 2.8