Lawn-Boy Gold Series Operator's Manual
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Lawn-Boy Gold Series Operator's Manual

Lawn-Boy Gold Series Operator's Manual

Walk-behind power mower
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FORM NO. 3321–556 EN
Gold-Series
Walk-Behind
Power Mower
Model No. 10401C – 8900001 & Up
Operator's Manual
IMPORTANT: Read this manual carefully. It contains information about your
safety and the safety of others. Also become familiar with the controls and
their proper use before you operate the product.

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Summary of Contents for Lawn-Boy Gold Series

  • Page 1 FORM NO. 3321–556 EN Gold-Series Walk-Behind Power Mower Model No. 10401C – 8900001 & Up Operator’s Manual IMPORTANT: Read this manual carefully. It contains information about your safety and the safety of others. Also become familiar with the controls and their proper use before you operate the product.
  • 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 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 THROTTLE ON MOWER HOUSING (Part No. 93–4136) (Part No.

  • Page 8: Assembly

    Assembly Handle Assembly Loosen handle knobs and lift top handle half in an arc until handle halves are in line and nest together (Fig. 1). Note: Use care to prevent pinching or stretching of cables. 1384 Figure 2 1. Low setting 2.

  • Page 9: Cover Plate

    Assembly Cover Plate Your mower was shipped with a cover plate (Fig. 5). 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

    NEVER USE AUTOMOTIVE OIL (i.e. SAE 30, 10W30 etc.), OR THE WRONG MIX RATIO BECAUSE Your Lawn-Boy mower is powered by a 2-cycle ENGINE DAMAGE MAY OCCUR. If engine which requires a mixture of gasoline and oil; engine failure occurs and it has been 32:1 with Lawn-Boy 2-CYCLE ASHLESS OIL.

  • Page 11: Mixing Gasoline And Oil

    (6.5 mm) of top of tank, not into filler neck. For simplicity and best engine performance, mix DO NOT OVER-FILL TANK. Replace fuel cap 8 ounces of Lawn-Boy 2-CYCLE ASHLESS OIL securely and wipe up any spilled fuel. with two gallons of fresh, unleaded regular gasoline.

  • Page 12: Lawn Preparation And Mowing

    DO NOT USE FUEL ADDITIVES OTHER THAN THOSE MANUFACTURED FOR FUEL STABILIZATION DURING STORAGE, SUCH Review SAFETY INSTRUCTIONS and read AS LAWN-BOY 2+4 FUEL CONDITIONER. this manual carefully before operating mower. LAWN-BOY DOES NOT RECOMMEND STABILIZERS WITH AN ALCOHOL BASE Clear area of sticks, stones, wire, branches and SUCH AS ETHANOL OR METHANOL.

  • Page 13: Operation

    Operation Starting Engine Note: Follow steps in BEFORE STARTING section. Open fuel shut off valve (Fig. 12). 1580 Figure 14 1. Primer Hold blade control bail against upper handle Figure 12 (Fig. 15). 1. Fuel shut off valve Pull starter handle (Fig. 15) lightly until resistance is felt, then pull sharply.

  • Page 14: Stopping Engine

    Operation Stopping Engine Adjusting Cutting Height Release blade control bail (Fig. 16). Both the Each wheel is adjusted individually with a wheel engine and blade will stop. See your dealer height adjustment lever. Cutting heights are 1”, immediately if they do not. 1–1/2”, 2”, 2–1/2”, 3”...

  • 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 Blade Brake stop within 3 seconds of releasing bail; if not see your Authorized Lawn-Boy Service Dealer for repair. Clean every 50 hours or at least once Exhaust Ports each mowing season.

  • 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 Spark Plug Reconnect spark plug wire when maintenance is completed (Fig. 22). A spark plug that is dirty, pitted, carbon-covered or has worn electrodes may cause hard starting and poor Clean Mower Housing operation. Replace spark plug once a season or clean every 25 A clean mower housing provides the best cutting hours, whichever occurs first.

  • Page 19: Blade

    Maintenance Blade Blade Removal Remove blade nut from crankshaft (Fig. 25). A straight, sharp blade provides maximum cutting performance. Regularly inspect and sharpen blade. POTENTIAL HAZARD Blade is sharp. WHAT CAN HAPPEN Contact with sharp blade can cause serious personal injury. HOW TO AVOID THE HAZARD Wear gloves or wrap sharp edges of the blade with a rag.
  • Page 20 Maintenance Blade Sharpening 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 1007 Wear proper eye protection when Figure 27 sharpening blade. Blade Installation Sharpen only the leading edge of blade with a file or grinder.

  • Page 21: Exhaust Ports

    Maintenance Exhaust Ports Rotate crankshaft slowly until piston covers exhaust ports (Fig. 31). Carbon deposit build–up causes excessive wear and loss of power. Check and clean if necessary. Remove spark plug and tip mower on its right side. See SPARK PLUG. Remove blade nut and blade.
  • Page 22 Maintenance Clean carbon deposits from muffler and tube 11. Torque muffler bolts to 155 in.–lbs. (13 ft.–lbs.) with wire brush and wood dowel (Fig. 33). Wipe (18 Nm). muffler clean with paper towel or rag. 12. Attach blade driver and blade with blade nut. See BLADE INSTALLATION.

  • 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/oil mix...
  • Page 24 Troubleshooting PROBLEM CORRECTIVE ACTION Uneven cutting pattern Place all four (4) wheels at same height Sharpen and balance blade Change mowing pattern Clean underside of mower deck Discharge chute plugs Move throttle lever from SLOW to FAST position Raise cutting height Allow grass to dry before mowing Clean underside of mower deck EN-22...

  • Page 25: Accessories

    Accessories Optional accessories may have been shipped with your mower or are available from your Authorized Lawn–Boy Dealer. For proper installation follow these instructions. Mulch Plate POTENTIAL HAZARD An uncovered discharge opening will allow 1123 objects to be thrown in operator’s or Figure 35 bystander’s direction.
  • Page 26 Accessories Secure with wing screw (Fig. 36). Reconnect spark plug wire. Note: Use only Lawn-Boy original equipment or Lawn-Boy replacement cutting blade. Other blades may strike mulch plate when engine is started and run. Mulching Operation Set engine speed control to FAST .

  • Page 27: Storage

    (Fig. 39). any enclosure. We recommend Lawn-Boy 2 + 4 Fuel Conditioner to stabilize fuel for storage (Fig. 37). If possible, the last fuel fill of the year should be treated with Lawn-Boy 2 + 4 Fuel Conditioner. 1179 Figure 39 1.

  • Page 28: Folding Handle

    Storage Folding Handle Removing From Storage Squeeze bottom handle section together and Unfold handle. See ASSEMBLY chapter, slide past stops of handle brackets (Fig. 40). Handle section. Check and tighten all fasteners. Remove spark plug (Fig. 42) and spin engine rapidly using starter to blow excess oil from the cylinder.

This manual is also suitable for:

10401c

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