Francis, I believe you have a hydraulic clutch setup, in which case the fork, spring bearing are all inside the bellhousing. You may be able to unbolt the clutch slave cylinder from the bellhousing and remove the cylinder and push gently on the fork with the end of a pencil. There should not be excessive movement. I can't tell you if the slave cylinder has any adjustment, but hopefully this will get you headed in the right direction

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Jeff L
1987 300e
1989 300e
1987 BMW 325