Simplicity 7800547 Operator's Manual
Simplicity 7800547 Operator's Manual

Simplicity 7800547 Operator's Manual

21” variable speed rear discharge walk behind mowers

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NOTE: Specifications are correct at time of printing and are subject to change without notice.
* Actual sustained engine power will likely be lower due to operating limitations and environmental factors. Please refer to 'Engine Power Rating Information' for
further details.
Port Washington, WI 63074
Operator's Manual
21" VARIABLE SPEED
REAR DISCHARGE
WALK BEHIND
Model No.
7800547
7800548
Manual No. 7103372 (Rev. '-', 8/28/2009)
MOWERS
Description
SMISPVH21700
SMISPVH21775E

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June 18, 2025

Where does the governor spring connect

Summary of Contents for Simplicity 7800547

  • Page 1 REAR DISCHARGE WALK BEHIND MOWERS Model No. Description 7800547 SMISPVH21700 7800548 SMISPVH21775E NOTE: Specifications are correct at time of printing and are subject to change without notice. * Actual sustained engine power will likely be lower due to operating limitations and environmental factors. Please refer to ‘Engine Power Rating Information’ for further details.
  • Page 2 Thank You for purchasing this quality-built Simplicity mower. We’re pleased that you placed your confidence in the Simplicity brand. When operated and maintained according to the instructions in this manual, your Simplicity mower will provide many years of dependable service.
  • Page 3: Table Of Contents

    Table of Contents Operator Safety ..........4 Important Operator Safety Instructions .
  • Page 4: Operator Safety

    IMPORTANT OPERATOR SAFETY INSTRUCTIONS WARNING: This powerful cutting machine is capable of amputating hands and feet and can throw objects that can cause injury and damage! Failure to comply with the following SAFETY instructions could result in serious injury or death to the operator or other persons. The owner of the machine must understand these instructions and must allow only persons who understand these instructions to operate machine.
  • Page 5 IMPORTANT OPERATOR SAFETY INSTRUCTIONS (Continued) SAFE HANDLING OF GASOLINE OPERATION (Continued From Previous Page) (Continued From Previous Column) 7. Remove gas-powered equipment from the vehicle or 14. DO NOT discharge material against a wall or trailer and refuel it on the ground. If this is not possible, obstruction.
  • Page 6: Features And Controls

    IMPORTANT The figures and illustrations in this manual are provided for reference only and may differ from your specific model. Contact your dealer if you have questions. Features and Controls Oil Fill Cap and Dipstick Rope Start Handle Fuel Filler Cap Drive Handle Recycling Cover Drive Handle Lock Lever...
  • Page 7: Operation

    Pre-Start Check List Starting and Operation Make the following checks and perform the service required Engine and Blade before each start-up. The engine on your mower is equipped with the Briggs & 1. Check the guards, deflectors, grass bag, and covers to Stratton Ready Start System.
  • Page 8: Propelling Mower

    Starting and Operation (Continued) Handle Height Adjustment Propelling the Mower The height of the mower handle can be adjusted as follows: 1. Remove the handle knobs, washers and carriage bolts 1. Start the engine. Refer to the Section entitled “Starting from the lower handle (A, Figure 5).
  • Page 9: Cutting Height Adjustment

    WARNING DO NOT attempt any maintenance, adjustments or service with engine and blade running. STOP engine and blade. Disconnect spark plug wire and secure away from spark plug. Engine and components are HOT. Avoid serious burns, allow sufficient time for all components to cool. 1.25 in 4.00 in Cutting Height Adjustment...
  • Page 10: Installing The Discharge Deflector

    Installing the Grass Bag WARNING 1. Raise the rear discharge door (A, Figure 11). DO NOT attempt any maintenance, adjustments or service 2. Remove the recycling plug. Refer to the section entitled with engine and blade running. STOP engine and blade. “Removing the Recycling Plug”.
  • Page 11: Maintenance

    Maintenance - Introduction Check Mower Blade 1. Disconnect the spark plug wire and secure the end away To retain the quality of the mower, use genuine replacement from the plug. parts only. Contact a local dealer for parts and service 2.
  • Page 12: Wheel Drive Components

    WARNING DO NOT attempt any maintenance, adjustments or service with engine and blade running. STOP engine and blade. Disconnect spark plug wire and secure away from spark plug. Engine and components are HOT. Avoid serious burns, allow sufficient time for all components to cool. Wear heavy leather gloves when handling or working around cutting blades.
  • Page 13: Mower Blade Replacement

    3. Remove the blade (B, Figure 16). WARNING DO NOT attempt any maintenance, adjustments or service Make sure that with engine and blade running. STOP engine and blade. blade hub is seated Disconnect spark plug wire and secure away from spark between flanges plug.
  • Page 14: Wheel Drive Control Adjustment

    3. Push the drive lever fully forward, and measure the WARNING length of the extended spring. The overall spring length DO NOT attempt any maintenance, adjustments or service should increase by 0.020 – 0.025”. with engine and blade running. STOP engine and blade. 4.
  • Page 15: Belt Service

    Engine Drive Belt Replacement WARNING 1. Empty the fuel tank. DO NOT attempt any maintenance, adjustments or service 2. Remove the blade (A, Figure 21). Refer to the Section with engine and blade running. STOP engine and blade. entitled “Blade Sharpening”. Disconnect spark plug wire and secure away from spark 3.
  • Page 16: Charging The Battery

    To Charge the Battery WARNING 1. Unplug the battery connector (B, Figure 23) from the DO NOT attempt any maintenance, adjustments or service main harness connector (A). with engine and blade running. STOP engine and blade. Note: Grasp the connectors; do not pull on the Disconnect spark plug wire and secure away from spark harness wires.
  • Page 17: Rear Cover Removal & Installation

    WARNING DO NOT attempt any maintenance, adjustments or service with engine and blade running. STOP engine and blade. Disconnect spark plug wire and secure away from spark plug. Engine and components are HOT. Avoid serious burns, allow sufficient time for all components to cool. Rear Cover Removal and Installation To Remove the Rear Cover 1.
  • Page 18: Maintenance Schedule

    Maintenance Schedule ITEM MAINTENANCE MAINTENANCE EACH USE PERFORMED REFERENCE HRS OR YEARLY Engine Oil Check Oil Level Page 7 Drive Belt Check for Wear and Damage Page 11, 15 Mower Blade Check for wear and Damage Page 11, 13 Mower Deck Clean Debris Accumulation Page 7 Wheel Drive Components Clean Debris Accumulation;...
  • Page 19: Troubleshooting

    Troubleshooting PROBLEM PROBABLE CAUSE CORRECTIVE ACTION Engine Will Not Start 1. Fuel tank empty. 1. Fill fuel tank with fresh fuel. Using Recoil Starter 2. Engine needs priming. 2. Prime. Check Engine Manual for Instructions. 3. Spark plug wire disconnected. 3.
  • Page 20: Warranty

    BRIGGS & STRATTON POWER PRODUCTS GROUP, L.L.C. OWNER WARRANTY POLICY LIMITED WARRANTY Briggs & Stratton Power Products Group, LLC will repair and/or replace, free of charge, any part(s) of the equipment that is defective in material or workmanship or both. Briggs & Stratton Corporation will repair and/or replace, free of charge, any part(s) of the Briggs and Stratton engine* (if equipped) that is defective in material or workmanship or both.
  • Page 21: Slope Guide

    Slope Guide...
  • Page 22 Notes www.simplicitymfg.com...
  • Page 23 Notes...
  • Page 24 (temperature, humidity, altitude), and engine-to-engine variability. Due to manufacturing and capacity limitations, Briggs & Stratton may substitute an engine of higher rated power for this Series engine. Simplicity Manufacturing, Inc. PO Box 997 500 N. Spring Street...

This manual is also suitable for:

7800548Smispvh21700Smispvh21775e

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