Yamaha MZ360

Yamaha MZ360The Yamaha MZ360 is a 358 cc (21.8 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 MZ360 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 Yamaha MZ360 used aluminum cylinder block with a spiny cast-iron sleeve. For exhaust valve used high heat resistant SUH3 steel. The MZ360 engine has one balancer on 360. Big capacity single-cylinder engine is able to get larger vibration. In order to cure this, the balancer is needed.

An 85.0 mm (3.35 in) cylinder bore and 63.2 mm (2.48 in) piston stroke give the engine a total of 358 cc of displacement. Compression ratio rating is 8.1:1. The engine produced 10.4 PS (7.6 kW) at 3,600 rpm of maximum horsepower and 8.6 PS (6.3 kW) at 3,600 rpm of continuous rated power. Maximum torque is 23.9 N·m (2.43 kg·m, 17.6 ft·lb) at 2,400 rpm and 47.8 N·m (4.87 kg·m, 35.2 ft·lb) at 1,200 of torque for MZ360R model (Reduction Type).

General information

Engine Specifications
Model MZ360
Type 4-stroke, Hemi-head OHV, single cylinder
Displacement 358 cm3 (21.8 cu-in)
Max. horsepower 10.4 PS (7.6 kW) at 3,600 rpm
Max. torque (crank PTO) 23.9 N·m (2.43 kg·m, 17.6 ft·lb) at 2,400 rpm
Carburetor Float type
Cooling system Forced-air
Ignition system Transistor Controlled Ignition (T.C.I.)
Lubricating system Mechanical splashing
Starting system Recoil or Electrical (option)
Fuel used Unleaded gasoline (octane number 86 or higher)
Fuel tank capacity 6.1 L (1.61 US Gal, 1.34 Imp Gal.)
PTO shaft rotation Counterclockwise (from PTO shaft side)

Dimensions and Weight

Yamaha MZ360
Length, mm (in) 399 (15.7)
Width, mm (in) 451 (17.7)
Height, mm (in) 444 (17.5)
Dry weight, kg (lb) 33.0 (72.7)

Service Information

Valve clearance
Intake valve clearance 0.10 mm (0.004 in)
Exhaust valve clearance 0.10 mm (0.004 in)
Oil system
Oil type Yamalube 4-stroke or an equivalent (SE or SF)
Recommended oil SAE 10W-30, 10W-40
Oil capacity 1.1 L (1.16 US. qt, 0.97 Imp. qt.)
Ignition system
Spark plug NGK: BPR4ES
Spark plug gap 0.7-0.8 mm (0.028-0.031 in)
T.C.I. air gap 0.4 ± 0.2 (0.016 ± 0.008)
Spark plug tightening torque 20 N·m (2.0 kg·m, 14 ft·lb)
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.

1 Comment

  1. Hi!
    Perhaps you can please help me here,
    I have the MZ360 engine powering a Yamaha IND 75 grasscutter.
    The engine starts missing and eventually dies after about 3-5 minutes under load.
    I being the only driver had a situations where I had hit some strong grass that almost stalled the engine but the engine recovered and went on until recently after the last almost stall then then after runs for 5 and dies, Let it cool down and it starts easily and dies again ??? I have down all the basics ie. plug, fuel, air. The reason I was on this site is I was looking for the valve clearance which could possibly tell me if I has bent a push rod? KInd regards,
    Ray 0824442828

Leave a Reply

Your email address will not be published.