The Zongshen 161F is a 0.1 L (123 cc, 7.51 cu·in) naturally aspirated single-cylinder four-stroke air-cooled internal combustion small gasoline engine with a horizontal shaft from the Zongshen BT-series, manufactured by Zongshen Power Co. for general-purpose applications.
The Zongshen BT161F engine has a single-cylinder, overhead valve (OHV) design, and recoil starter. This engine used a carburetor fuel system, transistorized magneto ignition system, splash type lubricating system, and forced-air cooling system. The engine is fitted with a semi-dry foam air cleaner. The ZS 161F is equipped with a 1.5 L (0.4 US. gal. 0.33 Imp. gal.) fuel tank.
The Zongshen ZS 161F engine produced 3.0 PS (2.2 kW; 3.0 HP) at 3,600 rpm of maximum output power
|Engine model||ZS BT161F|
|Engine type||4-stroke, OHV, single-cylinder|
|Displacement||123 cm3, (7.51 cu·in)|
|Max. horsepower||3.0 PS (2.2 kW; 3.0 HP) at 3,600 rpm|
|Cooling system||Forced air|
|Air cleaner||Semy-dry foam filter|
|Ignition system||Transistorized ignition|
|Fuel consumption||394 g/kWh|
|Fuel tank capacity||1.5 L (0.4 US. gal. 0.33 Imp. gal.)|
|Fuel used||Unleaded gasoline (octane number 86 or higher)|
|Starting system||Recoil starter|
|PTO shaft rotation||Counterclockwise (from PTO shaft side)|
|Dimensions (L x W X H)||390 x 280 x 320 mm (15.4 x 11 x 12.6 in)|
|Dry weight||12.5 kg (27.6 lbs)|
Cylinder Block and Head
It has a 61.0 mm (2.4 in) cylinder bore and 42.0 mm (1.65 in) piston stroke. Compression ratio rating is 8.7:1.
|Cylinder bore:||61.0 mm (2.4 in)|
|Piston stroke:||42.0 mm (1.65 in)|
|Crankshaft center distance:||21 mm (0.825 in)|
|Valve arrangement:||OHV, belt driven|
The 4-stroke engine oil with a viscosity of 10W-30 is recommended for the ZS 161F, refilling oil capacity is 0.6 L (0.63 US. qt, 0.53 Imp. qt.). The valve clearance is 0.10-0.15 mm (0.0039-0.0059 in) for intake valves and 0.15-0.20 mm (0.0059-0.0079 in) for exhaust valves.
|Idle speed:||1,450 rpm|
|Intake valve clearance:||0.10-0.15 mm (0.0039-0.0059 in)|
|Exhaust valve clearance:||0.15-0.20 mm (0.0059-0.0079 in)|
|Lubrication system:||Splash type|
|Oil consupumtion:||6.5 g/kWh|
|Oil type:||4-stroke engine oil|
|Oil capacity:||0.6 L (0.63 US. qt, 0.53 Imp. qt.)|
|Ignition timing:||23°±2° B.T.D.C.|
|Spark plug gap:||0.6-0.8 mm (0.0236-0.0315 in)|
|Spark plug torque:||20 N·m (2 kg·m, 14.7 ft·lb)|
We try to use official documentation and verify the published data, but errors may occur. In addition, specifications of machinery and equipment may vary depending on markets and modifications. We do not recommend the use of this data for spare parts or repairs. Use official service manuals or parts catalogs for your product.
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