Stihl RZ 900 Series Instruction Manual - Page 30

Maintenance Procedures Checking/Adding Fuel Service and Maintenance Safety WARNING Amputation and crushing hazard Specific steps must be taken in order to perform service and maintenance procedures safely. Read and follow all the applicable safety and instructional messages in this manual. Always disengage the mower blades, set the parking brake, turn the engine OFF, remove the ignition key, and wait for all movement to stop prior to performing service and maintenance procedures. Always disconnect the spark plug wire(s) and fasten it away from the plug before beginning any maintenance or service procedures in order to prevent accidental ignition. Wear appropriate personal protective equipment such as safety shoes, safety glasses, gloves, and ear protection. Long hair, loose clothing or jewelry may get tangled in moving parts. Use of parts that are not authorized or approved by STIHL may cause serious or fatal injury or property damage. • STIHL recommends that only authorized STIHL replacement parts be used for repair or maintenance. WARNING Fuel and its vapors are extremely flammable and explosive. Fire or explosion can cause severe burns or death. When Adding Fuel • Turn engine off and let engine cool at least 3 minutes before removing the fuel cap. • Extinguish all cigarettes, cigars, pipes, and other sources of ignition. • Fill fuel tank outdoors or in a well-ventilated area. • Do not overfill fuel tank. To allow for expansion of the fuel, do not fill above the bottom of the fuel tank neck. • Keep fuel away from sparks, open flames, pilot lights, heat, and other ignition sources. • Check fuel lines, tank, cap, and fittings frequently for cracks or leaks. Replace if necessary. • If fuel spills, wait until it evaporates before starting engine. To add fuel: 1. Remove the fuel cap (A, Figure 25). 25 Before Maintaining Your Unit Units Equipped with Electronic Fuel Injected Engines: If electric welding on vehicle, remove battery negative cable (black) from battery negative (-) terminal, and disconnect the ECM electrical connector(s). If welding on the muffler, also disconnect the O2 sensor electrical connector and remove the O2 sensor from the muffler. 2. Fill the fuel tank to the bottom of the filler neck. This will allow for fuel expansion. 3. Install and hand tighten the fuel cap. 4. If your unit is equipped with two fuel tanks, repeat this process to fill the other fuel tank. NOTICE Refer to your engine operator's manual for specific fuel recommendations. 30 stihlusa.com