The 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).
4-stroke, Hemi-head OHV, single cylinder
358 cm3 (21.8 cu-in)
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
Transistor Controlled Ignition (T.C.I.)
Recoil or Electrical (option)
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
Length, mm (in)
Width, mm (in)
Height, mm (in)
Dry weight, kg (lb)
Intake valve clearance
0.10 mm (0.004 in)
Exhaust valve clearance
0.10 mm (0.004 in)
Yamalube 4-stroke or an equivalent (SE or SF)
SAE 10W-30, 10W-40
1.1 L (1.16 US. qt, 0.97 Imp. qt.)
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)
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