YAMAHA MZ175 Engine

YAMAHA MZ175 Description

MULTIPURPOSE PERFORMER: Successfully tested performance on a variety of applications from medium to heavy-duty mowers, medium to high performance pumps, and a variety of generators, skids, air compressors and many other applications.

Features:

• Overhead Valve.
• Automatic Low Oil Level Protection.
• Maintenance Free Transistor Ignition.
• 4,5 liter Fuel Tank.

When stopping/starting the engine::

1) The decomp weight pushes up the pin to push the lifter.
2) The exhaust valve is not opened or closed as the camshaft turns but forced to open.

When operating engine::

1. The centrifugal force causes the decomp weight to open, and this movement lowers the pin.
2. The lifter is not forced to be pushed up but normally moves as the camshaft turns.
3. The exhaust valve is not opened and closed with the normal timing. | Sleeve: Spiny sleeve is used. Since the engine block is aluminum, cast iron sleeve is fitted for more durability and less worn out. This sleeve is called spiny sleeve that has special shape. When aluminum and steel expands by heat, their expand rate is different(aluminum is more than steel). This difference will create air pockets but with spiny sleeve is keeps this level is very small. Spiny sleeve is shaped liked jigsaw puzzle and even if aluminum and steel expands in different ratio, the air pocket will not occur

Technical Specification