TECHNICAL & CONSUMER INFORMATION
-34-
Model
G340F(D) G390F(D) G340F(D)-D G390F(D)-D G420F(D)
Type Single cylinder, 4-Stroke, Forced Air Cooling, OHV
Rated
power(kW/3600rpm)
7.1 8.2 7.1 8.2 9
Max. torque(N·m/rpm)
22.1/
2500
25.1/
2500
26.5/
2500
Fuel
consumption(g/kW·h)
≤395
Idle speed 1800±150
Speed Fluctuating Ratio ≤10%
Transmission Mode - -
Gear transmission
Reduction Ratio - - 2:1
Noise(≤) 80 db(A)
Bore×Stroke(mm) 82×64 88×64 82×64 88×64 90×66
Displacement(cc) 337 389 337 389 420
Compression Ratio 8:1
Lubricating mode Splash
Starting Mode Recoil start( Recoil start / Electric starting)
Rotation Anti-clockwise(from P.T.O. side)
Valve Clearance input valve：0.10 mm ~0.15mm, output valve：0.15 mm ~0.20mm
Spark plug clearance 0.7 mm ~0.8mm
Igniting Mode Transistorized magneto Ignition
Air cleaner Semi-dry, Oil bath, Foam filter
Dimension(L×W×H)
(mm)
405×450×443 440×450×443 405×452×443
Net weight (kg) 31(34) 33(36) 32(35)
22.1/
2500
25.1/
2500
The power rating of the engine indicated in this document is the net power output tested on
a production engine for the engine model and measured in accordance with SAE J1349 at
3,600 rpm (Net Power) and at 2,500 rpm (Max. Net Torque). Mass production engines may
vary from this value.
Actual power output for the engine installed in the final machine will vary depending on
numerous factors, including the operating speed of the engine in application,
environmental conditions, maintenance, and other variables.
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