Pedersoli made a Kodiak & Safari Express double rifle. There is basically just the one same Pedersoli Manual that covers all of their models. The manual contains less than 1.5 written pages that are dedicated to the Kodiak Express, and even some of what that includes isn't very specific.
The appendix has load information for all of their guns.
The Kodiak page refers folks to other generic sections in the manual for questions about cleaning, double triggers, etc....
Some Pedersoli guns do come with a separate parts diagram which isn't part of the manual.
Maybe there's a way to request a copy of the parts diagram from Pedersoli.
One small Kodiak section is about the sights which may not even apply to your model since the Kodiak Express sights underwent some changes over time.
I can send you photos of the few relevant Kodiak pages to your email address if you send it to me in a PM.