Comprehensive Lawn Mower Maintenance Guide: Tips for All Types & Yarbo

Introduction

Types of Lawn Mowers and Their Maintenance Needs

• Gas-Powered Mowers: Require oil changes, spark plug replacements, and fuel system care to keep the engine humming.
• Electric Mowers: Focus on battery maintenance, cord checks, and blade sharpening for consistent power.
• Robotic Mowers (e.g., Yarbo): Emphasize sensor cleaning, battery care, and track maintenance for autonomous operation.

Safety Precautions

• For All Mowers:
  • Wear protective gear, including gloves and safety glasses.
  • Work in a well-ventilated area to avoid fumes.
  • Place the mower on a flat, stable surface to prevent tipping.
  • Keep hands and feet away from moving parts or sharp edges.
• For Gas-Powered Mowers:
  • Disconnect the spark plug to avoid accidental starts.
  • Let the engine cool to prevent burns.
  • Store fuel in approved containers, away from heat sources.
• For Electric Mowers:
  • Unplug the mower or remove the battery to eliminate electrical risks.
  • Inspect power cords for frays or cuts.
  • Keep electrical components dry to avoid shocks.
• For Yarbo Lawn Mowers:

Essential Tools and Supplies

• Socket wrench set (for bolts and spark plugs)
• Oil drain pan (for gas mowers)
• Blade sharpening tool (file or grinder)
• Replacement parts (air filters, spark plugs, belts, batteries)
• Cleaning supplies (soft cloth, brush, mild soap)
• WD-40 or rust remover (for corrosion)

• Module Vertical Stand (for deck cleaning)
• Soft brush (for sensors and rain sensor grooves)
• Nylon pad (for rust removal)

Routine Maintenance Tasks

General Maintenance for All Mowers

• • Why: Grass buildup causes rust and reduces cutting efficiency.
  • How:
    • Disconnect the spark plug (gas) or battery (electric/robotic).
    • Tilt the mower safely, ensuring the carburetor faces up (gas mowers).
    • Scrape off grass and debris with a brush or plastic scraper.
    • Rinse the underside with a hose, avoiding the engine or electrical components.
    • Dry thoroughly to prevent rust.
  • Pro Tip: Apply a non-stick spray to the deck to reduce future buildup.

• • Why: Dull blades tear grass, harming your lawn’s health.
  • How:
    • Disconnect power source for safety.
    • Remove the blade using a socket wrench.
    • Sharpen both edges at a 45-degree angle using a file or bench grinder.
    • Check balance by hanging the blade on a nail; grind the heavier side if it tilts.
    • Reinstall securely, ensuring no wobble.
  • Pro Tip: Keep a spare blade to swap out during sharpening.

• • Why: A clean filter ensures proper airflow for engine efficiency.
  • How:
    • Locate the air filter cover (usually on the engine’s side).
    • Remove the filter and inspect for dirt or damage.
    • Clean foam filters with soap and water, then re-oil; replace paper filters if clogged.
    • Reinstall securely.
  • Pro Tip: Check the filter monthly during heavy use.

• • Why: Fresh oil lubricates the engine, reducing wear.
  • How:
    • Run the engine for 2–3 minutes to warm the oil.
    • Place an oil drain pan under the drain plug.
    • Remove the plug and let the oil drain completely.
    • Replace the oil filter if applicable.
    • Refill with the manufacturer-recommended oil (e.g., SAE 30).
    • Check the dipstick to avoid overfilling.
  • Pro Tip: Change oil every 25–50 hours or annually.

• • Why: A worn spark plug causes hard starts or poor performance.
  • How:
    • Locate the spark plug (on the engine’s side or top).
    • Remove it with a socket wrench.
    • Inspect for fouling, corrosion, or wear.
    • Clean with a wire brush or replace with a new plug.
    • Set the gap per the manual (usually 0.030 inches).
    • Reinstall and tighten gently.
  • Pro Tip: Replace spark plugs annually for best results.

• • Why: Worn belts reduce power to blades or wheels.
  • How:
    • Check belts for cracks, fraying, or glazing.
    • Follow the manual to access and remove the belt.
    • Install a new belt, ensuring proper alignment with pulleys.
    • Test the mower for smooth operation.
  • Pro Tip: Keep spare belts on hand for quick replacements.

• • Why: A healthy battery ensures reliable starts.
  • How:
    • Clean terminals with a wire brush and baking soda solution.
    • Store batteries at 50% charge in a cool, dry place.
    • Charge regularly, especially before storage.
    • Replace batteries that no longer hold a charge.
  • Pro Tip: Avoid extreme temperatures to prolong battery life.

Yarbo-Specific Maintenance

• • Why: Prevents grass buildup while protecting Yarbo’s waterproof design.
  • How:
    • Detach the mower module from the universal body.
    • Place on the Module Vertical Stand for easy access.
    • Avoid spraying water directly onto the connection port or two extension ports.
    • Use a hose or damp cloth to clean, focusing on grass between blades.
    • Dry thoroughly before reattaching.

• • Why: Ensures accurate navigation and obstacle detection.
  • How:
    • Use a soft, non-abrasive microfiber cloth.
    • Gently wipe sensors and cameras to remove dust or debris.
    • Avoid water, solvents, or abrasive materials to prevent damage.

• • Why: Keeps Yarbo moving smoothly across your lawn.
  • How:
    • Clean the underside of tracks with a brush to remove mud, weeds, or debris.
    • Inspect for cracks, wear, or loose axles.
    • Contact Yarbo support for professional repairs if damage is found.

• • Why: Ensures Yarbo detects rain and pauses operation.
  • How:
    • Locate the rain sensor at the mower’s front.
    • Use a soft brush to clean grooves, removing dust or debris.
    • Test functionality by sprinkling water on the sensor.

• • Why: Protects Yarbo during long-term storage.
  • How:
    • For storage over three months:
      • Detach the mower from the universal body.
      • Place on the Module Vertical Stand.
      • Clean the underside with a high-pressure hose, avoiding the universal body.
      • Wipe dry with a clean cloth.
      • Store in a dry, well-ventilated area with moisture-proof measures.
    • For rust removal:
      • Apply WD-40 or a rust remover to affected areas.
      • Wait 3 minutes, then scrub with a nylon pad.
      • Reapply WD-40 to prevent further corrosion.
      • Avoid spraying the rain sensor.

Seasonal Maintenance Tips

• Spring Preparation:
  • Clean or replace air filters (gas mowers).
  • Check and replace spark plugs and oil (gas mowers).
  • Sharpen blades for a clean cut.
  • Inspect batteries and belts for wear.
  • For Yarbo, clean sensors and tracks, and test boundary wires.
  • Pro Tip: Start the season with a full tune-up to avoid mid-season breakdowns.
• Summer Upkeep:
  • Clean the mower deck after each use to prevent buildup.
  • Monitor oil levels (gas mowers) and top up if needed.
  • Check tire pressure for even cutting (if applicable).
  • Lubricate moving parts to reduce friction.
  • For Yarbo, ensure the charging station is free of debris.
  • Pro Tip: Mow in the early morning or evening to avoid heat stress on your mower.
• Fall/Winter Storage:
  • Clean the mower thoroughly, removing all grass and debris.
  • Drain fuel or add a stabilizer (gas mowers) to prevent carburetor clogs.
  • Remove and store batteries in a cool, dry place (electric/Yarbo).
  • For Yarbo, follow rust-prevention steps (see Routine Maintenance).

Maintenance Schedule