Lawn-Boy 10302 Operator's Manual
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Lawn-Boy 10302 Operator's Manual

Walk-behind power mower
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Walk-Behind
Power Mower
Model No. 10202 – 4900001 & Up
Model No. 10210 – 4900001 & Up
Model No. 10302 – 4900001 & Up
Model No. 10310 – 4900001 & Up
Operator's Manual
Operator's Manual
IMPORTANT: Read this manual carefully. It contains information about your
IMPORTANT: Read this manual carefully. It contains information about your
safety and the safety of others. Also become familiar with the controls and
safety and the safety of others. Also become familiar with the controls and
their proper use before you operate the product.
their proper use before you operate the product.
Silver-Series
FORM NO. 3316–701 EN Rev A

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  • Page 1 FORM NO. 3316–701 EN Rev A Silver-Series Walk-Behind Power Mower Model No. 10202 – 4900001 & Up Model No. 10210 – 4900001 & Up Model No. 10302 – 4900001 & Up Model No. 10310 – 4900001 & Up Operator’s Manual Operator’s Manual IMPORTANT: Read this manual carefully.
  • Page 2 Read this manual carefully to learn how to operate and maintain your product correctly. Reading this All of us at Lawn-Boy want you to be completely manual will help you and others avoid personal injury satisfied with your new product, so feel free to and damage to the product.

  • Page 3: Table Of Contents

    Contents Page Page Maintenance ......Safety ....... . . Recommended Maintenance Schedule .

  • Page 4: Safety

    Safety This machine meets or exceeds CPSC blade safety Note: This engine is NOT equipped with a requirements for walk–behind rotary mowers and spark arrester muffler. Use or operation the B71.1 specifications of the American National of this mower in the State of California Standards Institute, in effect at time of on any forest-covered, brush-covered production.
  • Page 5 If major repairs are ever needed or if assistance is desired, contact your local Authorized Do not run engine indoors. Lawn-Boy Service Dealer. Start the engine carefully according to 14. Stop the engine and wait for all moving parts to instructions and with feet well away from the stop before adjusting the height-of-cut.
  • Page 6 Safety Maintenance Perform only those maintenance instructions described in this manual. If major repairs are ever needed or if assistance is desired, contact your local Authorized Lawn–Boy Service Dealer. Before mower is cleaned, inspected, serviced, or adjusted, stop engine and disconnect wire from spark plug.

  • Page 7: Safety And Instruction Decals

    Safety Safety and Instruction Decals Safety decals and instructions are easily visible to the operator and are located near any area of potential danger. Replace any decal that is damaged or lost. ON MOWER HOUSING ON MOWER HOUSING (Part No. 39–5770) (Part No.

  • Page 8: Assembly

    Assembly Handle Handle Height The handle has two height positions — high and low Assembly (Fig. 2). Select a handle height position that is most comfortable for you. Loosen handle knobs and lift top handle half in an arc until handle halves are in line and nest together (Fig.

  • Page 9: Cover Plate

    Assembly Cover Plate Your mower was shipped with a cover plate (Fig. 4). For side discharge operation the plate must be installed into deck opening. POTENTIAL HAZARD An uncovered discharge opening will allow objects to be thrown in operator’s or bystander’s direction.

  • Page 10: Before Starting

    Before Starting Gasoline Your Lawn–Boy mower is shipped WITHOUT oil in the crankcase. However, a 20 oz. bottle of oil is shipped with your mower. Fill engine crankcase with POTENTIAL HAZARD a maximum of 21 oz. (0.62 liters) of SAE 30 oil. Use In certain conditions gasoline is extremely a high quality detergent oil classified American flammable and highly explosive.
  • Page 11 1. Fuel tank cap 1002 Figure 9 1. Spark plug wire Lawn-Boy recommends that Lawn-Boy 2+4 Fuel Conditioner (Fig. 8) be used regularly during operation and storage. Lawn-Boy 2+4 Fuel Conditioner cleans the engine during operation and prevents gum-like varnish deposits from forming in the engine during storage.

  • Page 12: Lawn Preparation And Mowing

    Never deliberately mow over any object. If an object is struck, or mower starts to vibrate, immediately stop engine, disconnect spark plug wire and examine mower for damage. Replace blade when necessary with an original Lawn-Boy replacement blade. EN-10...

  • Page 13: Operation

    Operation Starting Engine Note: Follow steps in BEFORE STARTING section. Move throttle lever to START/MULCHING ZONE position (Fig. 10). Figure 12 1. Blade control bail 3. Starter handle 2. Upper handle START/ MULCHING ZONE Stopping Engine 1019 Figure 10 1. Throttle lever Move throttle lever to SLOW position (Fig.

  • Page 14: Self-Propelled Drive

    Operation Self–propelled Drive Adjusting Cutting Height (self-propelled models only) Each wheel is adjusted individually with a wheel height adjustment lever. Cutting heights are 1”, To operate self-propelled drive squeeze 1-1/2”, 2”, 2-1/2”, 3” and 3-1/2 inches (25, 38, 51, self-propelled bail against handle and hold 64, 74 and 86 mm).

  • Page 15: Mulching Tips

    Operation Mulching Tips grass blade should be cut off. Cutting below the 2 inch setting is not recommended unless grass is sparse or it is late fall when grass growth General Tips begins to slow down. Follow these instructions whether cutting grass or When cutting grass over six inches tall, you may leaves for the best cutting results and lawn want to first mow using the highest height-of-cut...

  • Page 16: Maintenance

    Check stopping time every 50 hours or at start of each mowing season. Blade must stop within Blade Brake 3 seconds of releasing bail; if not see your Authorized Lawn-Boy Service Dealer for repair. Grease rear height adjustor brackets Lubrication (self-propelled models).

  • Page 17: Air Filter

    Maintenance 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.

  • Page 18: Spark Plug

    Maintenance 1002 1033 Figure 19 Figure 18 1. Spark plug wire 1. Oil fill tube Set spark plug gap at .030 inch (.76 mm) Fill crankcase to FULL line on dipstick with (Fig. 20). fresh oil. See section on Oil in BEFORE STARTING chapter for specifications.

  • Page 19: Clean Mower Housing

    1/8 inch (3.2 mm), the crankshaft cause personal injury or property damage. should be checked for straightness by WHAT CAN HAPPEN your Authorized Lawn-Boy Service Tipping mower may cause fuel leakage Dealer. from carburetor or fuel tank. HOW TO AVOID THE HAZARD Avoid fuel spills by running engine dry or remove gas with hand pump, never siphon.
  • Page 20 Maintenance Blade Removal Blade Sharpening Remove blade nut and mulching fan (Fig. 23) POTENTIAL HAZARD When sharpening blade, pieces of blade could be accidentally thrown. WHAT CAN HAPPEN Thrown objects can cause serious eye injury. HOW TO AVOID THE HAZARD Wear proper eye protection when sharpening blade.

  • Page 21: Lubrication

    Maintenance Blade Balancing Torque blade nut to 560 in.–lbs. (47 ft.–Ibs.) (63 N m). Check the balance of blade by placing the center Note: Blade nut must be replaced after hole of blade over a nail or screwdriver shank installing and removing four (4) times. clamped horizontally in a vise (Fig.

  • Page 22: Self-Propelled Cable

    Maintenance Self-propelled Cable Self-propelled Drive Cleaning (self–propelled models only) (self–propelled models only) Whenever handle height is changed, a new Under certain conditions clippings can collect under self–propelled cable is installed or traction drive belt belt drive cover and in pulley groove. This could slips, adjustment is required.

  • Page 23: Troubleshooting

    Troubleshooting Your mower was designed and built for trouble-free operation. Check the following components and items carefully. If a problem continues, see your Authorized Lawn-Boy Service Dealer. PROBLEM CORRECTIVE ACTION Engine will not start Fill fuel tank with fresh gasoline...
  • Page 24 Troubleshooting PROBLEM CORRECTIVE ACTION Discharge chute plugs Move throttle lever from SLOW to START/MULCHING ZONE position Raise cutting height Allow grass to dry before mowing Clean underside of mower deck Mower will not self-propel Adjust self-propelled cable Clean debris under belt cover EN-22...

  • Page 25: Accessories

    Optional accessories may have been shipped with Remove wing screw that fastens cover plate to your mower or are available from your Authorized housing (Fig. 31). Lawn-Boy Dealer. For proper installation follow these instructions. Rear Grass Catcher POTENTIAL HAZARD An uncovered discharge opening will allow objects to be thrown in operator’s or...
  • Page 26 Accessories Place front corner of chute baffle into deck Two shoulder bolts on the mower housing opening. Rotate chute counterclockwise and protrude through slotted holes in the chute push down into deck opening (Fig. 33). assembly and do not have to be loosened or removed.
  • Page 27 Accessories 15. Grasp bag assembly handle and slide over flange of grass chute (Fig. 38). Push downward on handle until it seats into position. 1011 Figure 36 1010 1. Knob 3. Hanger clamp Figure 38 2. Bolt 4. Bag hanger 11.

  • Page 28: Mulch Plate

    Accessories Mulch Plate Reassemble hanger clamps to handle sections using whichever set of holes best holds bag taut. Using lower holes in hanger clamps tightens bag assembly and upper holes in hanger clamps loosens bag assembly. POTENTIAL HAZARD Note: Under normal use, bag materials are An uncovered discharge opening will allow subject to deterioration and wear.
  • Page 29 Accessories Two shoulder bolts on the housing protrude through slotted holes in the mulch plate and do not have to be loosened or removed (Fig. 41). Mulch plate moves over the shoulder bolt heads. 1008 Figure 41 1. Mulch plate 3.

  • Page 30: Storage

    Allow the engine to cool before storing in any enclosure. We recommend Lawn-Boy 2 + 4 Fuel Conditioner to stabilize fuel for storage (Fig. 43). If possible, the last fuel fill of the year should be treated with Lawn-Boy 2 + 4 Fuel Conditioner.

  • Page 31: Folding Handle

    Storage Folding Handle Removing From Storage Squeeze bottom handle section together and Unfold handle. See handle assembly instructions slide past stops of handle brackets (Fig. 46). in ASSEMBLY section Check and tighten all fasteners. Remove spark plug (Fig. 49) and spin engine rapidly using starter to blow excess oil from the cylinder.

  • Page 32: Warranty

    Customers who have purchased Lawn-Boy products exported from the United States or Canada should contact their Lawn-Boy Distributor (Dealer) to obtain guarantee policies for your country, province, or state. If for any reason you are dissatisfied with your Distributor’s service or have difficulty obtaining guarantee information, contact the Lawn-Boy importer.

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