Suzuki: Odometer, speedometer repair, google search

Question
I have a1987 suzuki samurai my odometer and tripometer dont work , but
my speedometer does. What could be the problem?

Answer
There is a set of gears that drive the odometer and trip odometer.
Usually, a gear breaks.
It may be possible for a speedometer repair specialist to repair it, a used speedo is usually cheaper  There are a couple of suzuki salvage groups you can find with a google search.  One that I know of is Trail Tough in Oregon.