59
Engine
*
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 7,000 rpm (Engine Net
Power) and at 5,000 rpm (Engine 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.
NOTE:
Specifications may vary according to the types, and are subject to
change without notice.
MODEL
UMC425E
UMC425U
Engine model
GX25T
Engine description code
GCALT
Engine type
4-stroke, overhead cam, 1 cylinder
Displacement
25.0 cm
3
(1.5 cu-in)
Bore and Stroke
35.0 × 26.0 mm (1.4 × 1.0 in)
Engine Net power
(in accordance with SAE J1349*)
0.72 kW (1.0 ps)/7,000 rpm
Engine max. Net torque
(in accordance with SAE J1349*)
1.0 N·m (0.10 kgf·m, 0.74 lbf·ft)/5,000 rpm
Idle speed
3,100 ± 200 rpm
Maximum corresponding
spindle speed
MIN. 10,000 rpm
Cooling system
Forced air
Ignition system
Transistor magneto
Oil capacity
0.08 L (0.08 US qt, 0.07 lmp qt)
Fuel tank capacity
0.58 L (0.153 US gal, 0.128 lmp gal)
Spark plug
CMR5H (NGK)
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