Here goes...
"8. Tighten the rack guide screw to 25N-m (2.5kgf-m, 18lbf-ft) then loosen it.
9. Retighten the rack guide screw to 8N-m (0.8kgf-m, 6lbf-ft) then back it off to the specified angle.
Specified return angle: 15 degrees max.
10. Hold the rack guide screw stationary with a wrench and tighten the locknut by hand until it is fully seated.
11. Install the special tool on the locknut and hold the rack guide screw stationary with a wrench. Tighten the locknut an additional 30 degrees with the special tool"
Not being very mechanically knowledgable, I hope that is the pre-load adjustment you are talking about :-k