Polaris 2003 Universal Snowmobiles - Manual (Page 149)

147
MAINTENANCE
General Maintenance
Accessory Reverse Kit
If you’ve had a reverse kit installed on your snowmobile, some
maintenance will be required. Follow these recommendations:
Chain Tension
Maintain the proper chain tension as outlined on page 133.
Oil Level
Maintain the oil level between the safe marks as indicated on the oil
bottle (see page 94).