The Yamaha MA175 is a 174 cc (10.6 cu-in) single-cylinder air-cooled 4-stroke internal combustion general-purpose gasoline engine with vertical shaft manufactured by Yamaha Motor Co., Ltd.
The Yamaha MA175 engine has a low-profile OHC (overhead cam) system with steel chain drive for optimized engine size and durability; hemispherical head with angled intake/exhaust valves; cast-iron cylinder line; float type carburetor; transistorized ignition system (T.C.I.).
The cylinder bore is 68.0 mm (2.67 in) and the piston stroke is 49.0 mm (1.89 in), compression ratio rating is 8.5:1. The engine produced 4.5 PS (3.4 kW) at 3,600 rpm of maximum horsepower. Maximum torque is 10.0 N·m (1.02 kg·m, 7.38 ft·lb) at 2,400 rpm.
|Type||4-stroke, OHV, single cylinder|
|Displacement||174 cm 3 (10.6 cu-in)|
|Max. horsepower||4.5 PS (3.4 kW) at 3,600 rpm|
|Max. torque (crank PTO)||10.0 N·m (1.02 kg·m, 7.38 ft·lb) at 2,400 rpm|
|Ignition system||Transitorized (T.C.I.)|
|Lubricating system||Mechanical splashing|
|Fuel used||Unleaded gasoline (octane number 86 or higher)|
|Fuel tank capacity||1.2 L|
|PTO shaft rotation||Counterclockwise (from PTO shaft side)|
Dimensions and Weight
|Length, mm (in)||415 (16.3)|
|Width, mm (in)||360 (14.2)|
|Height, mm (in)||270 (10.6)|
|Dry weight, kg (lb)||12.5 (27.6)|
|Oil type||Yamalube 4-stroke or an equivalent (SE or SF)|
|Recommended oil||SAE 10W-30, 10W-40|
|Oil capacity||0.5 L (0.53 US. qt)|
|Spark plug||NGK: BPR7HS|
|Spark plug gap||0.7-0.8 mm (0.028-0.031 in)|
|Spark plug tightening torque||20 N·m (2.0 kg·m, 14 ft·lb)|
We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.
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