FORM NO. 3319–678GB 53cm Walk-behind Power Mower Model No. 20713 — 8900001 & Up Model No.
Figures 1 3 3 1 2 m-3156 1. Model and serial number decal 1026 1. Low setting 2. High setting 3. Cable anchor – self-propelled model 2 4 2 1 1 m–2876 1002 1. Knob i 2. Top handle half 1.
Figures 5 7 2 1 2 1 1756 1754 1. Cover plate 2. Screw 1. Guard plate 2. Bolt and nut 6 8 1 1031/m–2877 995 1. Shoulder bolt 1.
Figures 9 12 2 3 1 1 m–2877 981 1. Blade control bail 2. Upper handle 1. Fuel tank cap 1 10 3. Starter handle 13 1019 1060 1. Throttle lever 1. Blade control bail 11 14 1 1 1. Primer iii m–2878 1017 1.
Figures 15 17 1 ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ 1 1016 1. Self-propelled bail 16 1 2 m–2879 1. Cover 2. Filter 18 1021 1. Wheel height adjustment lever 1 m–2880 1.
Figures 19 21 .030 in. (.76 mm) 986 1005 20 22 6 5 1128 3 4 2 1 M–2910 1. Blade bolt 2. Split lockwasher 3. Spacer v 4. Blade 5. Blade driver 6.
Figures 23 25 2” (51 mm) 5” (127 mm) 990 1025 24 26 1 1018 1007 1.
Figures 27 30 6 1 2 3 5 4 1. 1 to 1!/2 in. (25 to 38 mm) 2. Self -propel control 3. Cable jacket M–2941 4. Cable support 5. Nut 6. Blade brake control 1039 28 1 2 31 1040 1. Belt cover 2.
Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Training . . . . . . . . . . . . . . . . . . . . . . . . . . . Preparation . . . . . . . . . . . . . . . . . . . . . . . . . Operation . . . . . . . . . . . . . . . . . . . . . . . . . . Maintenance And Storage . . . . . . . . . . . . . Sound Pressure Level . . . . . . . . . . . . . . . . . Sound Power Level . . . . . . . . . . . . . . . . . .
DANGER signals an extreme hazard that will cause serious injury or death if the recommended precautions are not followed. Preparation 1. WARNING signals a hazard that may cause serious injury or death if the recommended precautions are not followed. While mowing, always wear substantial footwear and long trousers. Do not operate the equipment when barefoot or wearing open sandals. 2. CAUTION signals a hazard that may cause minor or moderate injury if the recommended precautions are not followed.
4. Always be sure of your footing on slopes. 5. Walk, never run. • before clearing blockages or unclogging chute; 6. For wheeled rotary machines, mow across the face of slopes, never up and down. • before checking, cleaning or working on the lawnmower; Exercise extreme caution when changing direction on slopes. • after striking a foreign object.
Sound Pressure Level Sound Power Level This unit has an equivalent continuous A-weighted sound pressure at the operator ear of: 88.5 dB(A), based on measurements of identical machines per ANSI B71.5-1984 procedures. This unit has a sound power level of: 100 dB(A)/1 pW, based on measurements of identical machines per Directive 84/538/EEC and amendments. Vibration Level This unit has a maximum hand-arm vibration level of 10.51 m/s@, based on measurement of identical machines per ISO 5349 procedures.
Throw or flying objects — Whole body exposure Engage Thrown or flying objects — Rotary side-mounted mower. Keep deflector shield in place. Disengage Stop engine before leaving operator position.
Engine stop Cutting element — height adjustment Choke Pull rope. Primer (start aid) Wheel Push primer three times. Wheel traction Properly dispose of batteries. Lower control bar. Insert key in ignition switch. Raise control bar. Turn key in ignition switch. Raise/lower control bar. Move control. Raise/lower control bar.
Raise control bar. Raise control bar. Lower control bar. Assembly Note: Handle 2. Assembly 1. Loosen handle knobs and lift top handle half in an arc until handle halves are in line and nest together (Fig. 2). Note: 2. Use care to prevent pinching or stretching of cables. Tighten knobs securely. Note: Belt cover may need to be loosened and slightly moved out of the way to make enough room to place handle in high height setting. Adjust self–propelled cable. See Maintenance section.
2. Remove screw that fastens cover plate to the housing (Fig. 5). 3. Two shoulder bolts on the housing protrude through slotted holes in the cover plate and do not have to be loosened or removed. Cover plate moves over the shoulder bolt heads (Fig. 6). 4. Slide cover plate clockwise to install or counterclockwise to remove. Gasoline POTENTIAL HAZARD • In certain conditions gasoline is extremely flammable and highly explosive. WHAT CAN HAPPEN 5. Secure with screw.
clean the engine during operation and prevent gum-like varnish deposits from forming in the engine during periods of storage. IMPORTANT: Some fuels, called oxygenated or reformulated gasolines, are gasolines blended with alcohols or ethers. Excessive amounts of these blends can damage the fuel system or cause performance problems. Never use methanol, gasoline containing methanol, gasohol containing more than 10% ethanol or white gas because engine fuel system damage could result.
Adjusting Cutting Height To Restart Engine 1. Repeat STARTING ENGINE procedure with throttle lever in 2. 3. (FAST) position. If engine fails to start after three (3) pulls, repeat steps 2–4 in STARTING ENGINE procedure. Note: Do not use primer to restart a warm engine after a short shutdown. POTENTIAL HAZARD • Adjusting height-of-cut levers could bring hands into contact with moving blade. Self–propelled Drive (self-propelled models only) 1. 2. serious injury.
Maintenance Continued safe and dependable operation requires routine maintenance. Recommended Maintenance Schedule Service Item Service Operation 5 Hours 25 Hours 50 Hours 100 Hours Fasteners Check blade and engine mounting fasteners frequently. Keep all nuts, bolts and screws tight to ensure safe operation. Air Filter Replace each mowing season or every 25 hours. Clean more frequently if operating conditions are dusty. X Housing Clean built-up grass clippings and dirt.
POTENTIAL HAZARD • If you leave the wire on the spark plug, someone could start the engine. WHAT CAN HAPPEN • Accidental starting of engine could seriously injure you or other bystanders. HOW TO AVOID THE HAZARD • Pull wire off spark plug before you do any maintenance. Also push wire aside so it does not accidentally contact spark plug. Air Filter plug. Start the engine and let it run until it runs out of fuel. Briefly running the engine will warm up the oil.
2. Remove cap from fuel tank (Fig. 9) and use a pump-type siphon to drain fuel into clean gas can. Note: 3. 4. POTENTIAL HAZARD • Gasoline is extremely flammable, highly explosive and under certain conditions can cause personal injury or property damage. This is the only procedure recommended for draining fuel. Reconnect spark plug wire. WHAT CAN HAPPEN • Tipping mower may cause fuel leakage Run engine until it dies. Try starting engine once more to make sure gas is out of carburetor.
Note: If measurements are not within 1/8 inch (3.2 mm), blade should be replaced. If, after blade replacement, the measurements are still not within 1/8 inch (3.2 mm), the crankshaft should be checked for straightness by your Authorized Toro Service Dealer. Note: Blade Balancing 1. Check the balance of blade by placing the center hole of blade over a nail or screwdriver shank clamped horizontally in a vise (Fig. 24). 2.
Self-propelled Cable Note: (self–propelled models only) Cable must be loose with bail in released position or mower may creep when bail is disengaged. Whenever handle height is changed, a new self–propelled cable is installed or traction drive belt slips, adjustment is required. Self-propelled Drive Cleaning Self–propelled cable is adjusted on the handle by moving cable jacket held by cable support. Under certain conditions clippings can collect under belt drive cover and in pulley groove.
PROBLEM Engine runs rough Mower or engine vibrates excessively Uneven cutting pattern Discharge chute plugs Mower will not self-propel 16 CORRECTIVE ACTION 1. Connect spark plug wire 2. Clean spark plug, check spark plug gap, replace if damaged 3. Move throttle lever from SLOW to FAST position 4. Replace air filter element 1. Balance blade 2. Tighten blade bolt 3. Clean mower discharge chute 4. Clean underside of mower deck 5. Tighten engine mounting bolts 1.
Accessories For special conditions, the following accessories may be purchased at your local Authorized Toro Service Dealer. • procedure two more times to ensure all gas is removed from the engine. If gasoline is not drained and a fuel stabilizer is not added, gum–like varnish deposits will form and cause poor engine operation, even starting problems. Note: Rear Bag Kit, Model No. 59187 Storage To prepare lawn mower for off-season storage perform recommended maintenance procedures.
3. 4. 18 Remove spark plug (Fig. 4) and spin engine rapidly using starter to blow excess oil from the cylinder. Clean spark plug or replace if cracked, broken or electrodes are worn. Install spark plug and torque to 180 in.-lbs. (15 ft.-lbs.) (20 N m). 5. Perform recommended maintenance procedures. See MAINTENANCE section. 6. Fill fuel tank (Fig. 9) with fresh, clean gasoline mix. 7. Check engine oil level. 8. Reconnect spark plug wire (Fig. 4).
