From inside (document excerpt):
FORM NO. 3320-756 MODEL NO. 16403 – 2000001 & UP MODEL NO. 16404 – 2000001 & UP 21 ” (O.53 M) SIDE DISCHARGE MOWER A SAFETY INSTRUCTIONS WARNING: Engine exhaust contains carbon monoxide which is an odorless, deadly poison. Carbon monoxide is also known to the State of California to cause birth defects. Do not run engine indoors or in an enclosed area. 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.
Lawn Mower User Manual Free Download. Walk Behind Mowers Operator’s Manual. Power Mower Free Instruction Manual Download PDF. Years covered by this manual: 1992.
2. Keep everyone, especially children and pets, away from area of operation. Thoroughly inspect area where mower will be used and remove sticks, stones, wire, and debris. 3. Wear long pants and substantial shoes. Do not operate mower while wearing open sandals, jewelry, loose clothing or when barefoot. 4. Always wear safety glasses or eye shields during operation to protect eyes from foreign objects that may be thrown from the machine. 5. 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. 6. Keep all guards, shields and safety devices in place. Repair or replace damaged parts, inclUding decals. Check all safety devices before each use. 7. Engine and blade are designed to stop when engine kill control bar is released. Ensure engine kill control bar and brake function properly before each use of mower. WHILE OPERATING
Wikipedia’s page for Toro Company
Company Web Site: www.toro.com