It must be the same type as the unit was purchased. It must have no cracks, stripped threads or other damage to exterior case and all clutch components should be intact, otherwise it will void the credit.
The core legends are as follows:
To avoid season end congestion, we encourage customer to send core returns weekly or at least monthly. Your credit will be processed quicker and immediately applied toward your next purchase. Remember that there is no refund on your open credit, so use your open credit wisely.
No core return will be accepted after 90 days from the date of invoice.