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Operator's Manual
21” STEEL DECK
WALK MOWERS
COMMERCIAL MODELS
SERIES 20
Model No. Description
7800764 CRP218520
7800772 CP218520
!
7104669
Rev. ‘-’
Not for
Reproduction
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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. This machine is designed and intended only for finish cutting of established lawns and is not
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Table of Contents Operator Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Features and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Before Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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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. Each person operating the machine must be of sound mind and body and must
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Operator Safety Safe Handling of Gasoline Operation (Continued From Previous Page) (Continued From Previous Column) 6. DO NOT fill fuel containers inside a vehicle or on a truck 13. DO NOT operate mower without the entire grass catch- or trailer bed with a plastic liner. Always place the contain- er, or guards in place discharge guard, rear guard or other ers on the ground away from the vehicle before filling. safety devices in place and working. DO NOT point dis- 7. Remove gas-powered equipment
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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 G B A D C E A. Oil Fill Cap and Dipstick F. Blade Control B. Fuel Filler Cap G. Rope Start Handle C. Mulching Cover H. Ground Speed Control D. Rear Height Adjustment Latch (2) I. Drive Wheel Control E. Front Height Adjustment Latch (2) J. Engine Speed Control 6 www.snapper.com Not for Reproduct
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Operation Before Starting Starting the Mower 1. Check the guards, deflectors, grass bag, adapter, and The engine on your mower is equipped with the Briggs & TM covers to make sure all are in place and securely Stratton Ready Start System. This features a temperature- tightened. controlled automatic choke. No additional steps are required 2. Check the blade control (A, Figure 1), wheel drive to start a cold engine. control (B), and ground speed control (C) to insure they work freely. 1. Pull the
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Operation Propelling the Mower Handle Height Adjustment 1. Start the mower. For greater operator comfort, the height of the mower handle 2. Move the ground speed control (A, Figure 4) to the can be adjusted. desired speed position. 1. Loosen the lower nuts (A, Figure 5) on each 3. Squeeze the wheel drive control (B) against the handle lower handle. to engage the wheel drive and propel the mower 2. Move the handle assembly (B) up or down until the forward. Forward speed can be adjusted while the
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Operation Mulching (Recycling) Operation WARNING ! ! Note: For best results, cut up to a maximum of 1/3 of grass DO NOT attempt any maintenance, adjustments or service blade length and recycle ONLY when grass is dry. with engine and blade running. STOP engine and blade. 1. Set all wheels in the highest cutting position (Notch 7). Disconnect spark plug wire and secure away from spark Refer to the Section entitled “Cutting Height plug. Engine and components are HOT. Avoid serious Adjustment”. burn
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Operation Installing the Grass Bag Adapter WARNING ! ! (Optional Accessory on Some Models) DO NOT attempt any maintenance, adjustments or service 1. Remove the mulching cover. Refer to the Section enti- with engine and blade running. STOP engine and blade. tled “Mulching Operation”. Disconnect spark plug wire and secure away from spark 2. Install the adapter (A, Figure 10) to the deck in place of plug. Engine and components are HOT. Avoid serious the mulching cover, making sure that: burns, a
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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 A adapter
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Maintenance Check Grease Level in Transmission Maintenance - Introduction 1. Remove the transmission fill plug (A, Figure 15). Roll To retain the quality of the mower, use genuine replacement the machine forward or backward while looking down parts only. Contact a local dealer for parts and service into the plug hole. assistance. For the correct part or information for a 2. If liquid grease is not visible on the input gear (the small particular mower, always mention the model and gear below the
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Maintenance Check Transmission Poly-V Belt WARNING ! ! 1. Visually check the poly-v belt for cracking, fraying, sev- DO NOT attempt any maintenance, adjustments or service ered or exposed belt strands. If worn or damaged, with engine and blade running. STOP engine and blade. replace the belt before operating the mower. Disconnect spark plug wire and secure away from spark plug. Engine and components are HOT. Avoid serious Service - Periodic burns, allow sufficient time for all components to coo
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Maintenance A 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. Wear heavy leather gloves when handling or working around cutting blades. Blades are extremely sharp and can cause severe injury. C Mower Blade Replacement Figure 19: Ninja blade wear limits Standard B
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Maintenance Wheel Drive Control Adjustment WARNING ! ! 1. The wheel drive control is properly adjusted when there DO NOT attempt any maintenance, adjustments or service is 1/16” to 1/8” clearance (G, Figure 22) between the with engine and blade running. STOP engine and blade. inside of the spring hook (E) and the inside of the clutch Disconnect spark plug wire and secure away from spark cable eye (C) with the wheel drive control released. plug. Engine and components are HOT. Avoid serious burns,
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Maintenance Drive Spring Repair/Replacement WARNING ! ! If the drive spring (A, Figure 24) is loose, reconnect. If the DO NOT attempt any maintenance, adjustments or service spring is broken, replace with a new spring. with engine and blade running. STOP engine and blade. Disconnect spark plug wire and secure away from spark Note: Use a pair of needle nose pliers to install the drive plug. Engine and components are HOT. Avoid serious spring. burns, allow sufficient time for all components to coo
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Maintenance A WARNING ! ! DO NOT attempt any maintenance, adjustments or service B 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 Adjustment (Continued) 2. Remove the driven disc spring (A, Figure 26) from the driven disc assembly (B). Also remove the pin and washer (C) from the transfer rod (D), and remove the end of
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Maintenance Driven Disc Bearing Replacement WARNING ! ! If the driven disc bearing requires replacement, replace the DO NOT attempt any maintenance, adjustments or service bearing as follows: with engine and blade running. STOP engine and blade. 1. Remove the driven disc assembly. Refer to the Section Disconnect spark plug wire and secure away from spark entitled “Driven Disc Replacement”. plug. Engine and components are HOT. Avoid serious 2. Remove the snap ring (A, Figure 31) that secures the
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Maintenance Belt Service WARNING ! ! On self-propelled mowers, the engine belt (A, Figure 33) DO NOT attempt any maintenance, adjustments or service transmits power from the engine pulley (B) to the drive disc with engine and blade running. STOP engine and blade. (C). The drive disc powers the poly-v belt, which engages the Disconnect spark plug wire and secure away from spark transmission that powers the rear wheels. Should these belts plug. Engine and components are HOT. Avoid serious become w
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Maintenance WARNING ! ! DO NOT attempt any maintenance, adjustments or service A 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 B burns, allow sufficient time for all components to cool. 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 E down. Oil from the
