Specifications; Tuneup Specifications; Quick Reference Information; Wiring Diagrams - Honda GX25 Manuel De L'utilisateur

Specifications

GX25 (Basic types)
Description code
Length×Width×Height
Dry mass [weight]
Engine type
Displacement
[Bore×Stroke]
Net power
(in accordance with SAE J1349*)
Max. Net torque
(in accordance with SAE J1349*)
Engine oil capacity
Fuel tank capacity
Cooling system
Ignition system
PTO shaft rotation
GX35 (Basic types)
Description code
Length×Width×Height
Dry mass [weight]
Engine type
Displacement
[Bore×Stroke]
Net power
(in accordance with SAE J1349*)
Max. Net torque
(in accordance with SAE J1349*)
Engine oil capacity
Fuel tank capacity
Cooling system
Ignition system
PTO shaft rotation
GX50 (Basic types)
Description code
Length×Width×Height
Dry mass [weight] 4.13 kg (9.10 lbs)
Engine type
Displacement
[Bore×Stroke]
Net power
(in accordance with SAE J1349*)
Max. Net torque
(in accordance with SAE J1349*)
Engine oil capacity
Fuel tank capacity
Cooling system
Ignition system
PTO shaft rotation
12
GX25T GX25NT
GCALT GCART
198×221×230 mm
(7.8×8.7×9.1 in)
2.90 kg (6.39 lbs)
4-stroke, overhead camshaft, single
cylinder
3
25.0 cm (1.53 cu-in)
[35.0×26.0 mm (1.4×1.0 in)]
0.72 kW (1.0 bhp, 1.0 PS)
-1
at 7,000 min (rpm)
1.0 N·m (0.74 lbf·ft, 0.10 kgf·m)
-1
at 5,000 min (rpm)
0.08 L (2 US oz, 0.07 lmp qt)
0.53 L (0.140 US gal, 0.117 lmp gal)
Forced air
Transistor magneto
Counterclockwise
GX35T GX35NT
GCAMT GCAST
205×234×240 mm
(8.1×9.2×9.4 in)
3.46 kg (7.63 lbs)
4-stroke, overhead camshaft, single
cylinder
3
35.8 cm (2.18 cu-in)
[39.0×30.0 mm (1.5×1.2 in)]
1.0 kW (1.3 bhp, 1.4 PS)
-1
at 7,000 min (rpm)
1.6 N·m (1.2 lbf·ft, 0.16 kgf·m)
-1
at 5,500 min (rpm)
0.10 L (3 US oz, 0.09 lmp qt)
0.63 L (0.166 US gal, 0.139 lmp gal)
Forced air
Transistor magneto
Counterclockwise
GX50T GX50NT
GCCFT GCCGT
199×260×263 mm
(7.8 ×10.2 ×10.4 in)
4.15 kg (9.15 lbs)
4-stroke, overhead camshaft, single
cylinder
3
47.9 cm (2.92 cu-in)
[43.0×33.0 mm (1.7×1.3 in)]
1.47 kW (2.0 bhp, 2.0 PS)
-1
at 7,000 min (rpm)
2.1 N·m (1.5 lbf·ft, 0.21 kgf·m)
-1
at 5,000 min (rpm)
0.13 L (4 US oz, 0.11 lmp qt)
0.63 L (0.166 US gal, 0.139 lmp gal)
Forced air
Transistor magneto
Counterclockwise
* 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
-1
7,000 min (rpm) (Net Power) and at GX25/GX50:
-1
5,000 min (rpm), GX35: 5,500 min
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.

Tuneup Specifications

ITEM
Spark plug gap
Idle speed
3,100±200 min
Valve clearance IN: 0.08±0.02 mm
(cold) EX: 0.11±0.02 mm
Other
specifications

Quick Reference Information

Fuel Unleaded gasoline (Refer to page 4)
U.S.
Except
U.S.
Engine oil SAE 10W-30, API SJ or later, for general use.
Refer to page 5.
Spark plug CM5H (NGK)
CMR5H (NGK)
Maintenance Before each use:
• Check engine oil level. Refer to page 5.
• Check air filter. Refer to page 5.
First 10 hours:
Change engine oil. Refer to page 5.
Subsequent:
Refer to the maintenance schedule on page 4.

Wiring Diagrams

See Figure 21, page A-4.
Engine switch type: See Figure 22, page A-4.
ENGLISH
-1
(rpm) (Max. Net Torque).
SPECIFICATION MAINTENANCE
0.6–0.7 mm Refer to page 6
(0.024–0.028 in)
-1 See your
(rpm)
authorized Honda
dealer
No other adjustments needed.
Pump octane rating 86 or higher
Research octane rating 91 or higher
Pump octane rating 86 or higher