Haynes has a classic print error on the distributor leads for my car. Its like 4 1 3 2 instead of 2 3 1 4 (its right they just got the orientation backwards) which leads to many a forum thread.
The answer to car manuals is like reading history. Make sure you get two different source materials. Haynes did their own tear downs and write ups. Pair that with the OEM manuals, and service bulletins, forums and you get a good picture. The reference book for saab 900 is the Bentley Bible. Its a fantastic resource but the Haynes has a transmisson teardown and rebuild and better info on older trims. Pair that with the service manuals from Saab and the forums and you're rocking
IIRC the Suzuki Sidekick manual has a bunch of inaccurate torque specifications, on the very high side. I was lucky to learn about that before I did any work.
Possibly a metric-imperial units mixup? Values originally in Nm mistaken as ft-lbs would mean they're around 1.356x what they should be --- which is dangerous because they're not absurdly out of range.