Toro 16775, 16575 Toro Walk Behind Mowers Assembly Guide, 1990 - Enlarge page 1 
From inside (document excerpt):
FORM NO. 3313-314, Rev. A / MODEL NO. 16775-8000001 thru 9000001 & UP MODEL NO. 16575-8000001 thru 9000001 & UP OPERATOR’S MANUAL 21 ” (0.53 ml HP 8r SP SIDE DISCHARGE FINGERTIP START A SAFETY INSTRUCTIONS This mower “meets or exceeds CPSC blade safety requirements for walk behind rotary mowers, ” and the B71.1-1986 specifications of the American National Standards Institute. However, improper use or maintenance by the operator or owner can result in injury. To reduce the potential for injury, comply with these safety instructions and always pay attention to the safety alert symbol.
Failure to comply with the instructions may result in personal injury. BEFORE OPERATING 1. Read this manual carefully before operating the mower. Become familiar with the controls and proper use of the mower. Never allow children to operate the mower or adults to operate it without proper instructions. 2. Keep everyone, especially children and pets, away from the area of operation. Thoroughly inspect area where mower will be used. Remove sticks, stones, wire and debris. 3. Wear long pants and substantial shoes. Do not operate mower while wearing open sandals or when barefoot. 4. Check fuel level before starting engine. Do not fill fuel tank indoors, when the engine is running, or until engine cools for several minutes after running. Wipe up spilled gasoline before starting engine. 5. Keep all guards, shields and safety devices in place. Repair or replace defective or damaged parts.