Rear suspension maintenance (Aprilia RS125/3)

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Read 1.2.1 carefully.

The rear suspension is managed by a spring/damper unit that is connected to the frame and to the rear swinging arm through silent-blocks and a linkage system, respectively. To modify vehicle response, the rear shock absorber is fitted with an adjuster nut (1) which controls spring preload (2).

Note. Vehicle geometry may be varied to meet rider's preferences by changing front ride height.

Rear shock absorber adjustment

Factory setting is designed to suit the broadest possible range of riding conditions, meaning low and high speed, whether riding solo or carrying a full load.

(Information is posted on the website: MotoInstruction.ru)

However, rear suspension setting may be modified to suit specific needs in accordance with vehicle usage.

Danger!

• Allow the engine and silencer to cool down completely before working the adjusters.
• Never tighten the adjuster nut any deeper than 25 mm from the beginning of the thread (see figure). Exceeding this dimension will result in sudden jerking whenever you come across any small changes in the road surface.

Work the adjuster nut (1) (shock absorber spring preload adjustment) (see table).

Warning!

• Rotate the adjuster nut (1) gradually one turn at a time.
• Test ride the motorcycle repeatedly until achieving the ideal setting.

Rear shock absorber setting table

Adjuster nut (1)	Tighten	Slacken
Purpose	Increase spring preload	Decrease spring preload
Vehicle response	Stiffer	Softer
Recommended for	Smooth pavement, regular road surface	Uneven or loose road surface
Notes	Riding with a passenger	Riding solo

See this article in russian language

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Article about repair motorcycles «Aprilia RS-series RS 125» (1998-2005): «Rear suspension maintenance»: https://motoinstruction.ru/en/Aprilia/RS/RS125-3/owner/service/112782 <a href="https://motoinstruction.ru/en/Aprilia/RS/RS125-3/owner/service/112782">Rear suspension maintenance</a> - article about repair motorcycles «Aprilia RS-series RS 125» (1998-2005) from section «Maintenance». [url=https://motoinstruction.ru/en/Aprilia/RS/RS125-3/owner/service/112782]Rear suspension maintenance[/url] - article about repair motorcycles «Aprilia RS-series RS 125» (1998-2005) from section «Maintenance».