www.clarks-garage.com
On the left there is a navigation table. Clcik on the "Garage Shop Manual." Everything is in alphabetical order there. READ the whole site. You'll be amazed at the things you can fix on your car! Both the motor mounts and the odometer are in there. There is a lot of great reading in there.
The odometer is a plastic gear. It's often times broken by resetting the trip odometer when the car is moving. ONLY reset it when the car is NOT in motion, otherwise you'll break it and loose the odometer till you fix it. They sell the plastic gear on this website under the parts section. You have to take the gauage cluster out to do the gear. Taking the steering wheel off will make it easier, but it is possible to do the job with the steering wheel in the car. Just take your time putting it back together.
While you are doing the gear you can upgrade your dash lights too. They are prob pretty dim unless the PO changed them already. Upgrade the 3 2W bulbs to the 3.8W blubs. They will be bright enough and you will not melt the blub sockets.
When was your timing belt, balance belt, and water pump changed?