Yamaha MX175

Yamaha MX175The Yamaha MX175 is a 171 cc (10.4 cu-in) single-cylinder air-cooled 4-stroke internal combustion general-purpose gasoline engine with horizontal shaft manufactured by Yamaha Motor Co., Ltd.

The Yamaha MX175 engine has an OHV (overhead valve) design; float type carburetor; centrifugal flyweight governor; mechanical splashing lubrication system; Transistor Controlled Ignition (T.C.I.) and recoil or electrical (option) starter. The starter knob position can be adjusted by each 45°. Microwave harden crankshaft and camshaft provide extremely long life. The high-tech exhaust valve (Stellite® coated and tufftride® finished) resists very high temperature.

The cylinder bore is 66.0 mm (2.60 in) and the piston stroke is 50.0 mm (1.97 in), compression ratio rating is 8.5:1. The engine produced 4.9 PS (3.6 kW) at 3,600 rpm of maximum horsepower and 4.1 PS (3.0 kW) at 3,600 rpm of continuous rated power. Maximum torque is 10.5 N·m (1.1 kg·m, 7.74 ft·lb) at 2,400 rpm.

General information

Engine Specifications
ModelMX175
Type4-stroke, OHV, single cylinder
Displacement171 cm 3 (10.4 cu-in)
Max. horsepower4.9 HP (3.6 kW) at 3,600 rpm
Max. torque (crank PTO)10.5 N·m (1.1 kg·m, 7.74 ft·lb) at 2,400 rpm
CarburetorFloat type
Cooling systemForced-air
Ignition systemTransistor Controlled Ignition (T.C.I.)
Lubricating systemMechanical splashing
Starting systemRecoil or Electrical (option)
Fuel usedUnleaded gasoline (octane number 86 or higher)
Fuel tank capacity4.0 L (1.06 US Gal, 0.88 Imp Gal.)
PTO shaft rotationCounterclockwise (from PTO shaft side)

Dimensions and Weight

Yamaha MX175
Length, mm (in)321 (12.6)
Width, mm (in)352 (13.8)
Height, mm (in)386 (15.2)
Dry weight, kg (lb)18.0
(39.6)

Service Information

Valve clearance
Intake valve clearance0.10 mm (0.004 in)
Exhaust valve clearance0.10 mm (0.004 in)
Oil system
Oil typeYamalube 4-stroke or an equivalent (SE or SF)
Recommended oilSAE 10W-30, 10W-40
Oil capacity0.6 L (0.63 US. qt, 0.53 Imp. qt.)
Ignition system
Spark plugNGK: BPR4ES
Spark plug gap0.7-0.8 mm (0.028-0.031 in)
T.C.I. air gap0.4 ± 0.2 (0.016 ± 0.008)
Spark plug tightening torque20 N·m (2.0 kg·m, 14 ft·lb)
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

ATTENTION! Dear visitors, this site is not a trading platform, an official dealer or a spare parts supplier, so we do not have any price lists or spare parts catalogs. We are an information portal and provide the technical specifications of gasoline and diesel engines.

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.

Be the first to comment

Leave a Reply

Your email address will not be published.


*