Polaris Predator 9920779

Questions and Answers

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Jennifer LesterJul 28, 2025
What to do if my Polaris Predator 9920779 Offroad Vehicle engine turns over but fails to start?
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  darrellhuangJul 29, 2025
  If your Polaris Offroad Vehicle engine turns over but doesn't start, several factors could be the cause. First, ensure you have fuel by turning the fuel valve to reserve and refueling if necessary. Check for a clogged fuel valve, and clean or replace it if needed. Drain the fuel system and refuel if water is present in the fuel. Make sure the fuel valve is turned on and that you're using new, recommended fuel. Inspect the spark plug for fouling or defects, replacing it if necessary, and verify the stop switch is on. Also, check the battery voltage and recharge to 12.8 VDC if low. Adjust throttle freeplay in case of throttle ETC switch malfunction. If the problem persists, it may be a mechanical failure, and you should seek assistance from your Polaris dealer.
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Tracy ClarkAug 2, 2025
Why does my Polaris Offroad Vehicle engine run irregularly, stall, or misfire?
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  Andrew EatonAug 2, 2025
  Irregular engine performance in your Polaris Offroad Vehicle can stem from several causes. Start by inspecting the spark plug for fouling or defects, and clean or replace it if necessary; also check the spark plug gap or heat range and set gap to specs or replace plugs. Check all ignition connections and tighten any loose ones. Replace the fuel if water is present or if it's old, poor, or non-recommended. Inspect and clean or replace a clogged air filter. Ensure the fuel tank vent line isn't kinked or plugged. Recharge or replace the battery if the voltage is low (12.8 VDC). For worn or defective spark plug wire, electronic throttle control malfunction, or other mechanical failure, consult your Polaris dealer.
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Frank OdomAug 6, 2025
How to fix an engine that doesn't turn over on my Polaris Offroad Vehicle?
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  Melissa BryanAug 6, 2025
  If your Polaris Offroad Vehicle engine doesn't turn over, begin by checking the battery connections and tightening any that are loose. Also, check the solenoid connections and tighten them if necessary. Recharge the battery to 12.8 VDC if the voltage is low. If these steps don't resolve the issue, the fuseable link may be the problem, and you should see a Polaris dealer for replacement.
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kdavisAug 11, 2025
What to do if my Polaris Offroad Vehicle engine stops or loses power?
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  Kimberly GomezAug 11, 2025
  If your Polaris Offroad Vehicle engine stops or loses power, first ensure you have enough fuel by turning the fuel valve to reserve and refueling. Inspect and replace a kinked or plugged fuel vent line. Replace the fuel if water is present or if it's old, poor, or non-recommended. Inspect, clean and/or replace spark plugs if there was overuse of choke, or if they are fouled or defective; also, set gap to specs or replace plugs if the spark plug gap or heat range is incorrect. Check all ignition connections and tighten any loose ones. Recharge or replace the battery if the voltage is low (12.8 VDC). For worn or defective spark plug wire, consult your Polaris dealer.
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nguyenmargaretAug 15, 2025
Why is my Polaris Predator 9920779 engine backfiring?
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  Mary JohnsonAug 15, 2025
  An engine backfire in your Polaris Offroad Vehicle can be attributed to several factors. Begin by inspecting the spark plugs for any signs of being weak, fouled, or defective; clean and/or replace them as needed. Ensure the spark plug gap and heat range are correct, and adjust or replace the plugs accordingly. If you're using old, poor, or non-recommended fuel, replace it with new fuel. For issues such as an incorrectly installed spark plug wire, incorrect ignition timing, or mechanical failure, it's recommended to consult your Polaris dealer.
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Lori DrakeAug 25, 2025
What causes my Polaris Predator 9920779 Offroad Vehicle engine to overheat and how do I fix it?
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  Charles GreerAug 25, 2025
  If your Polaris Offroad Vehicle engine is overheating, check for debris lodged in the screen and remove it to clean the screen. Also, inspect the radiator for any blockages; use a garden hose to flush any debris from the radiator fins. Be careful, high pressure washers can deform the radiator fins and reduce cooling efficiency.
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stewartalejandroSep 10, 2025
How do I stop my Polaris Predator 9920779 engine from pinging or knocking?
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  Melinda RiveraSep 12, 2025
  To address pinging or knocking in your Polaris Offroad Vehicle engine, start by replacing any poor quality or low octane fuel with the recommended fuel type. Also, set gap to specs or replace plugs if the spark plug gap or heat range is incorrect. If the issue persists, it may be due to incorrect ignition timing, which requires attention from your Polaris dealer.

Summary

KNOW YOUR VEHICLE

Vehicle Identification Numbers

Record ATV identification numbers and key number for reference.

SAFETY

Safety Decals and Locations

Information on the location and purpose of warning decals on the ATV.

Safe Riding Gear Recommendations

Recommendations for essential protective gear, including helmet, eye protection, gloves, clothing, and boots.

Operator Safety Guidelines and Warnings

Guidelines and warnings for safe operation, including age restrictions and training.

FEATURES AND CONTROLS

Engine Electrical Switch Functions

Description of start, stop, and key switches for engine operation.

Lights and Indicators

Identification of lights and indicator lamps on the ATV.

Throttle and Clutch Controls

Description of throttle lever, ETC, and clutch lever operations.

Brake System Controls

Description of foot brake, lever, master cylinder, and parking brake controls.

Fuel System Controls

Information on fuel valve, tank, and choke operation.

Manual Shift System

Explanation of the gear shift pedal and shifting procedures.

OPERATION

Fuel Safety Precautions

Safety precautions for handling gasoline and refueling.

Break-In Period Procedures

Importance and procedures for the engine and transmission break-in period.

Pre-Ride Inspection Checklist

Importance of performing a pre-ride inspection for safe operation.

Engine Starting Procedures

Step-by-step procedures for starting cold and warm engines.

Safe Driving Procedures and Precautions

General procedures and precautions for safe driving in various conditions.

EMISSION CONTROL SYSTEMS

Noise Emission Control System

Information about noise emission control and modifications.

Operation on Public Lands

Regulations for operating off-road vehicles on public lands in the USA.

Crankcase and Exhaust Systems

Explanation of crankcase and exhaust emission control systems.

MAINTENANCE AND LUBRICATION

Periodic Maintenance Overview

Introduction to periodic maintenance, schedules, charts, and tool kit.

Engine Oil Level and Filter Change

Procedures for checking engine oil level and performing oil/filter changes.

Air Filter and Cooling System Maintenance

Maintenance for air filter systems and engine cooling system.

Spark Plug and Battery Maintenance

Service procedures for spark plugs and the vehicle battery.

Tire and Wheel Service

Information on tire tread depth, wheel removal, and installation.

ADJUSTMENTS

Brake System Checks and Adjustments

Checks for fluid leaks, travel, pads, and disc condition.

Chassis Alignment and Tension

Procedures for toe alignment and chain tension adjustment.

Suspension System Adjustments

Adjusting front and rear suspension settings, including preload and damping.

Lever and Handlebar Adjustments

Adjusting clutch lever, throttle cable freeplay, and handlebars.

CLEANING AND STORAGE

Vehicle Washing and Polishing

Procedures and tips for washing and polishing the vehicle.

Vehicle Storage Procedures

General recommendations for storing the vehicle, including fuel, oil, battery, and fogging.

Transporting the ATV

Procedures for safely transporting the ATV.

TROUBLESHOOTING

Engine Starting and Performance Troubleshooting

Troubleshooting for starting, running, stalling, and power loss issues.

Engine Overheating Troubleshooting

Troubleshooting for engine overheating issues.

SPECIFICATIONS

Predator 500 Technical Data

Technical specifications for the Predator 500 model, including dimensions and capacities.

Carburetor Jetting Chart

Chart for carburetor jetting based on altitude and temperature.

WARRANTY

Warranty Coverage and Exclusions

Details of limited warranty, exclusions, and coverage limitations.

Warranty Service Procedures

Instructions on how to get warranty service from a Polaris dealer.

Exported Vehicles and Emissions Warranty Policy

Policies for exported vehicles and the U.S.A. EPA Emissions Limited Warranty.

MAINTENANCE LOG

Periodic Maintenance Record Keeping

A chart to record periodic maintenance performed on the vehicle.