Engine - Yamaha EF3000iSE New Model Manual

Engine

Type: MZ175
4-stroke, OHV, Single cylinder, Air cooled,
Lubrication: Splash oil
Displacement: 171 cc
Bore × Stroke: 66.0 × 50.0 mm
New specification:
Valve clearance: 0.2 mm (IN/EX)
Main features:
8 Ignition system with engine speed limiter
8 Oil warning system
8 Auto de-compressor system
8 Valve stem oil seal on intake valve
8 Stellite exhaust valve
Difference from EF2800i
The intake port of the cylinder head is altered to improve engine performance.
The push rod is altered to reduce operating noise of the engine.
EF2800i (7VU)
Steel
MZ175 Engine
EF3000iSE (7WL)
Steel Aluminum
– 16 –
Valve
clearance
Cylinder
head
Air
shroud
ID mark
Steel