I can't write the letter for you, however I can give you some tips on how to write a great letter!
- Identify your audience.
- Organize letters to meet your users' needs.
- Start with the main message.
- Letters may need a sympathetic opening.
- After the main message, use an overview sentence.
- Letter headings.
- Use pronouns.
- Choose the right tone for your letters.
You would find it in the warranty section of the manual.
