Operator's Manual N ep o ro t fo du r ct io n 21” STEEL DECK WALK MOWERS COMMERCIAL MODELS SERIES 20 Model No. Description 7800764 CRP218520 7800772 CP218520 R ! 7104669 Rev.
Thank You for purchasing this quality-built Snapper product. We’re pleased that you placed your confidence in the Snapper brand. When operated and maintained according to the instructions in this manual, your Snapper product will provide many years of dependable service. This manual contains safety information to make you aware of the hazards and risks associated with the machine and how to avoid them.
Table of Contents Operator Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Features and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 N ep o ro t fo du r ct io n Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Before Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operator Safety ! 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.
Operator Safety Safe Handling of Gasoline (Continued From Previous Page) Operation 13. DO NOT operate mower without the entire grass catcher, or guards in place discharge guard, rear guard or other safety devices in place and working. DO NOT point discharge at people, passing cars, windows or doors. 14. DO NOT discharge material against a wall or obstruction. Material may ricochet back towards the operator. 15. Slow down before turning. 16. Watch out for traffic when near or crossing roadways. 17.
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. F H I J N ep o ro t fo du r ct io n G B A R D C E A. B. C. D. E. 6 Oil Fill Cap and Dipstick Fuel Filler Cap Mulching Cover Rear Height Adjustment Latch (2) Front Height Adjustment Latch (2) F. G. H. I. J. Blade Control Rope Start Handle Ground Speed Control Drive Wheel Control Engine Speed Control www.
Operation Before Starting Starting the Mower 1. Check the guards, deflectors, grass bag, adapter, and covers to make sure all are in place and securely tightened. 2. Check the blade control (A, Figure 1), wheel drive control (B), and ground speed control (C) to insure they work freely. A C B The engine on your mower is equipped with the Briggs & Stratton Ready StartTM System. This features a temperaturecontrolled automatic choke. No additional steps are required to start a cold engine. 1.
Operation Propelling the Mower Handle Height Adjustment 1. Start the mower. 2. Move the ground speed control (A, Figure 4) to the desired speed position. 3. Squeeze the wheel drive control (B) against the handle to engage the wheel drive and propel the mower forward. Forward speed can be adjusted while the mower is moving by changing the position of the ground speed control. For greater operator comfort, the height of the mower handle can be adjusted. 1.
Operation ! ! 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. Cutting Height Adjustment 1. Pull the height adjusting latch (A, Figure 6) outward and move to the desired cutting height.
Operation ! ! 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. Installing the Discharge Deflector N ep o ro t fo du r ct io n 1. Remove the mulching cover. Refer to the Section entitled “Mulching Operation”. 2.
Operation ! WARNING ! B 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. Installing the Mulching Plug 1. Install the mulching plug (A, Figure 11) if mulching is desired after the bag adapter is installed. Install the mulching plug completely and securely into the bag adapter (B).
Maintenance Maintenance - Introduction Check Grease Level in Transmission To retain the quality of the mower, use genuine replacement parts only. Contact a local dealer for parts and service assistance. For the correct part or information for a particular mower, always mention the model and serial number. ! ! 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.
Maintenance ! 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. Blades are extremely sharp and can cause severe injury. Check Transmission Poly-V Belt 1.
Maintenance ! ! WARNING A B 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. Blades are extremely sharp and can cause severe injury.
Maintenance ! ! 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. Wheel Drive Control Adjustment 1.
Maintenance ! ! 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. Drive Spring Repair/Replacement If the drive spring (A, Figure 24) is loose, reconnect. If the spring is broken, replace with a new spring. Note: Use a pair of needle nose pliers to install the drive spring.
Maintenance ! WARNING ! A 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. B Driven Disc Adjustment (Continued) 2. Remove the driven disc spring (A, Figure 26) from the driven disc assembly (B).
Maintenance ! ! 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. Driven Disc Ring Replacement (Continued) NOTE: Be sure to replace the shim washer (D) when reassembling the driven disc assembly. A N ep o ro t fo du r ct io n 2.
Maintenance ! ! 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. Replacing the Bearing On the Pulley End Of the Hex Shaft Engine Drive Belt Replacement (Stretch Type Belts) 1. Empty the fuel tank. 2. Note the belt routing (Figure 33).
Maintenance ! 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. A B C Engine Drive Belt Replacement (Stretch Type Belts - Continued) D IMPORTANT: Drain the fuel tank before tipping the mower. DO NOT tip the machine with the carburetor or spark plug down.
Service Schedule ITEM SERVICE PERFORMED REF.
Troubleshooting PROBLEM PROBABLE CAUSE CORRECTIVE ACTION Engine Will Not Start Using 1. Fuel tank empty. Recoil Starter 2. Spark plug wire disconnected. 1. Fill fuel tank with fresh fuel. Engine Stalls or Stops After 1. Blade control is released or is not being held Running securely against handle. 2. Fuel tank empty. 1. Blade control should be held securely against handle at all times during operation of mower. 2. Fill with fuel to proper level. Engine Loses Power Excessive Vibration 3.
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.
R N ep o ro t fo du r ct io n Notes 24 www.snapper.
N ep o ro t fo du r ct io n R Notes 25
R N ep o ro t fo du r ct io n Notes 26 www.snapper.
N ep o ro t fo du r ct io n R Slope Guide 27
21” STEEL DECK WALK MOWERS COMMERCIAL MODELS SERIES 20 Common Service Parts Deck Size (in) 21 Height of Cut (in) 1.25 - 4.0 Transmission Type Gear Ground Speed (mph) 1.2 - 4.0 Engine Power (gross torque) Engine Displacement (cc) Fuel Tank Capacity (qt) N ep o ro t fo du r ct io n Product Specifications Part Number Cutter Blade (Ninja - Quad) 7026407 Cutter Blade (Standard) 7022691 Drive Belt (Engine) 7046784 Drive Belt (Transmission) 7012354 8.5 190 1.
