---

All answers having "Manual" as clue:

3 Character Answers:

---

HOP



4 Character Answers:

---

USER



5 Character Answers:

---

HOWTO

STICK

USERS



6 Character Answers:

---

ALUMNA

OWNERS



8 Character Answers:

---

HANDBOOK

TEXTBOOK



9 Character Answers:

---

HOWTOBOOK