2. SPECIFICATIONS AND TECHNICAL DATA
Item Unit Specifications Remarks
Engine GZ25N
Engine Type Air cooled 2-stroke single cylinder
piston valve gasoline engine
Cylinder Bore x Stroke mm (in.) ø34 x 28 (1.339 x 1.102)
Displacement cc (cu.in.) 25.4 (1.6)
Effective Compression Ratio 8.0
Fuel
Mixture of 87 octane or above unleaded
Use JASO FC
gasoline and RedMax 2-cycle engine oil
or ISO EDG
(ratio 50 :1) or quality oil for air cooled grade 2-cycle
2-cycle engines (ratio 32:1). engine oil.
Carburetor Type Diaphragm Rotary valve
Model Walbro WYA-1B
Starting Method Recoil starter
Ignition System CDI with automatic timing advance
system.
Ignition Timing °/ rpm 35 / 7000
Spark Plug NGK CMR7A
Stopping Method Primary coil short-circuiting
Cooling System Forced Air Cooling
Air Cleaner Dry Type
Output Axle Rotation Direction
Counterclockwise (View from
PTO)
Clutch Type Automatic Centrifugal Clutch
(Sintered Clutch Shoe)
Overall Size
Engine GZ25N
for
Engine GZ25N2 for
exept SGCZ2500S SGCZ2500S
Length mm (in.) 271 (10.67) 188 (7.40)
Width mm (in.) 223 (8.78) 223 (8.78)
Height mm (in.) 248（9.76） 248（9.76）
Dry Weight kg (lbs.) 3.1（6.8） 2.8（6.2）
Fuel tank Capacity lit. (fl,oz) 0.65（22.0）
Operating Speed rpm 6000 10000
Idling Speed rpm 3000 ±200
Clutch Engagement Speed rpm 4000 ±200
No-Load Max Speed rpm 10000 With Standard
Head
Max Output HP(kW) / rpm 1.2 (0.9) / 7500
Max Torque kg•m(in.lbs) / rpm 0.12 (10.4) / 6500
Full Load Fuel Consumption g/HP.h(g/kW.h) 330 (449)
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