Been flicking through the Haynes manual and it specifies the type of fork oil needed but gives no clue to the amount needed , does anybody know ?

Hi

First you need to know which fork type you've got.

Somewhere in the Haynes it says the airgap for each type (i.e. the distance from top of the leg compressed wothout spring to the oil in the leg).

Recently changed oil on mine, think it was 105mm (rrn fork, damper-rod type)

Kind regards
Martin

It is in the Haynes manual - first page of Chapter 6:

Fork oil capacity
L and N models..........453cc
R models...................408cc

Fork oil level*
L and N models..........105mm
R models...................120mm

*Oil level is measured from the top of the tube with the fork spring removed and the leg fully compressed.

Better get my eyes tested lol