3. Open drain valve by using a 7/16" (11 mm) wrench turning counterclockwise. 4. After oil has drained completely, close the drain valve turning clockwise. Use the 7/16" (11 mm) wrench to apply a small amount of torque to keep it closed. Do not over tighten. 5. Remove the drain tube and store in a safe place. 6. Refill engine with oil through oil fill dip- stick tube. Pour slowly. Do not overfill. For approximate capacity see "PROD- UCT SPECIFICATIONS" section of this manual. 5. Reinstall air cleaner cover and secure by tightening knob. Foam Cartridge Pre-Cleaner Knob Nut\ Rubber Seal Cartridge Plate 7. Use gauge on oil fill cap/dipstick for checking level.
For accurate reading, tighten dipstick cap securely onto the tube before removing dipstick. Keep oil at "FULl" line on dipstick. Tighten cap onto the tube securely when finished. CLEAN AIR SCREEN Air screen must be kept free of dirt and chaff to prevent engine damage from overheating. Clean with a wire brush or compressed air to remove dirt and stub- born dried gum fibers. ENGINE OIL FILTER Replace the engine oil filter every season or every other oil change if the tractor is used more than 100 hours in one year. CLEAN AIR INTAKE/COOLING AREAS To insure proper cooling, make sure the grass screen, cooling fins, and other exter- nal surfaces of the engine are kept clean at all times.
AIR FILTER Your engine will not run properly using a dirty air filter. Clean the foam pre-cleaner after every 25 hours of operation or every season. Service paper cartridge every 100 hours of operation or every season, whichever occurs first. Every 100 hours of operation (more often under extremely dusty, dirty conditions), remove the blower housing and other cool- ing shrouds. Clean the cooling fins and external surfaces as necessary. Make sure the cooling shrouds are reinstalled. NOTE: Operating the engine with a blocked grass screen, dirty or plugged cooling fins, and/or cooling shrouds removed will cause engine damage due to overheating.
Service air cleaner more often under dusty conditions. 1. Loosen knob and remove cover. TO SERVICE PRE-CLEANER 2. Slide foam pre-cleaner off cartridge. 3. Wash it in liquid detergent and water. 4. Squeeze it dry in a clean cloth. Allow it to dry. 5. Saturate it in engine oil. Wrap it in clean, absorbent cloth and squeeze to remove excess oil. MUFFLER Inspect and replace corroded muffler and spark arrester (if equipped) as it could cre- ate a fire hazard and/or damage. SPARK PLUG(S) Replace spark plug(s) at the beginning of each mowing season or after every 100 hours of operation, whichever occurs first.
Spark plug type and gap setting are shown in "PRODUCT SPECIFICATIONS" section of this manual. IN-LINE FUEL FILTER TO SERVICE CARTRIDGE Replace a dirty, bent, or damaged car- tridge. NOTE: Do not wash the paper cartridge or use pressurized air, as this will damage the cartridge. 1. Remove nut and cartridge plate. 2. Reinstall the pre-cleaner (cleaned and oiled) over the paper cartridge. 3. Check rubber seal for damage and proper position around stud. Replace if necessary. 4. Reassemble air cleaner, cartridge plate, and nut. The fuel filter should be replaced once each season. If fuel filter becomes clogged, obstructing fuel flow to carbu- retor, replacement is required. 1.
With engine cool, remove filter and plug fuel line sections. 2. Place new fuel filter in position in fuel line with arrow pointing towards carbu- retor. 18