Welcome to the forum.
Below in my signature are links to information on your Newmar.
Here is a Brochure
and Owners Guide
1997 oldest we have, this is a AIRE and not a STAR, gas or diesel.
You will find in the QT's links information on older Newmar's 1 & 2 slides, jacks, batteries and # 3 on suspension with a tag axle of that time. Granning tag.
# 3 has a old Newmar section I have saved and 3 also has access to irv2 search engines.
Enjoy the forum and safe travels.