SPECIFICATIONS
1-3
ENGINE SPECIFICATIONS
*: 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.
Model
GX630
GX630R
GX660
GX660R
GX690
GX690R
Description code
GCBBK
GCBEK
GCBCK
GCBFK
GCBDK
GCBGK
Type
4 stroke, overhead valve, 90° V–twin cylinder
Displacement
688.0 cm
3
(41.97 cu–in)
Bore x stroke
78.0 x 72.0 mm (3.07 x 2.83 in)
Net power (SAE J1349)*
15.5 kW (21.1 PS) /
3,600 min
-1
(rpm)
16.0 kW (21.8 PS) /
3,600 min
-1
(rpm)
16.5 kW (22.4 PS) /
3,600 min
-1
(rpm)
Continuous
rated
power
12 kW (16.3 PS) /
3,600 min
-1
(rpm)
12.5 kW (17.0 PS) /
3,600 min
-1
(rpm)
13 kW (17.7 PS) /
3,600 min
-1
(rpm)
Maximum net torque (SAE J1349)*
48.3 N·m
(4.93 kgf·m, 35.6 lbf·ft)
/ 2,500 min
-1
(rpm)
48.3 N·m
(4.93 kgf·m, 35.6 lbf·ft)
/ 2,500 min
-1
(rpm)
48.3 N·m
(4.93 kgf·m, 35.6 lbf·ft)
/ 2,500 min
-1
(rpm)
Maximum rpm (at no load)
3,850 ± 150 min-1 (rpm)
Compression ratio
9.3 ± 0.2
Fuel consumption (at continuous rated
power)
6.0 Liters (1.59 US gal,
1.32 Imp gal) / h
6.3 Liters (1.66 US gal,
1.39 Imp gal) / h
6.7 Liters (1.77 US gal,
1.47 Imp gal) / h
Ignition system
C.D.I.(Capacitor Discharge Ignition) type magneto
Ignition timing
B.T.D.C. 9° / 1,000 min-1 (rpm)
Spark advancer type
Electronic type
Spark advancer performance
B.T.D.C. 9° – 23°
Spark plug
ZFR5F (NGK)
Lubrication system
Forced feed
Oil capacity
Without oil filter replacement: 1.5 Liters (1.59 US qt, 1.32 Imp qt)
With oil filter replacement: 1.7 Liters (1.80 US qt, 1.50 Imp qt)
Recommended oil
SAE 10W-30 API service classification SE or later
Cooling system
Forced air
Starting system
Starter motor
Stopping system
Ignition primary circuit open
Carburetor
2 barrel horizontal type, butterfly valve
Air cleaner
Dual type
Governor
Mechanical centrifugal
Breather system
Reed valve type, PCV (Positive Crankcase Ventilation) type
Fuel used
Unleaded gasoline with a pump octane rating 86 or higher
62Z6N000.book 3 ページ ２００９年６月１６日 火曜日 午後６時１７分
