Yamaha MRX-70 Owner's Manual download pdf (Page 86)

MOTORBIKE DESCRIPTION

This motorbike incorporates a YAMAHA single-cylinder, 4-stroke, air-cooled, electrical starting engine.

Engine size is 123,7 cubic centimetres, with a 54 mm piston diameter and 54 mm travel.

Ignition uses an ac magneto generator.

Multiple steel disc in oil bath clutch.

The engine is fixed to a perimeter-type chassis, made of high-strength rectangular section tubing, with

conical steering bearings.

The front suspension consists of a telescopic fork with 36-mm bars. The rear suspension consists of a shock

absorber anchored to a (Progressive Racing System), which provides excellent driving smoothness.

The stainless steel front disc brake has a 260-mm diameter, with a floating, double-piston clip.

The rear brake has a 200-mm diameter.

Manual MRX-SMX 125-ING v4.qxp 24/04/2006 18:17 Página 4

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Yamaha MRX-70 Owner's Manual Page 86