Speedometer Indicates Too High Or Too Low

Over a known distance, compare odometer reading with distance traveled. If odometer is not accurate, remove speed sensor from transaxle, and verify correct driven gear is installed for vehicle transaxle/tire combination. If parts are not correct, replace as necessary.
If all parts are correct, check if correct drive gear is installed on transaxle output shaft. If gear is correct, replace cluster. If gear is not correct, install correct gear.