This comprehensive John Deere OMUC18439 Operation and Maintenance manual is the perfect resource to help you maintain your John Deere Z915E Z920M Z930M 2945M EFI Z955M EFI 2950M Z960M Z930R Z950R Z955R Z970R ZTRAK Pro Series Gas Mowers. It provides all the details necessary to operate and maintain your machine safely and efficiently. It is compatible with all Windows and Mac versions, and can be easily viewed on your mobile phone, iPad, computer, or other device. Plus, you can print unlimited copies of the manual. Learn More