Ryobi 780r manual Troubleshooting, Problem Cause Action

Page 28

TROUBLESHOOTING

PROBLEM

CAUSE

ACTION

Engine will not start

Ignition switch is OFF

Turn switch to ON

 

Empty fuel tank

Fill fuel tank

 

Primer bulb wasn't pressed

Press primer bulb fully and slowly

 

enough

5-7 times

 

Engine flooded

Use starting procedure with choke

 

 

lever in the RUN position Pg. 16

 

Old or Improperly Mixed Fuel

Drain fuel tank / Add fresh fuel

 

 

mixture

 

Fouled spark plug

Replace or clean the spark plug

 

 

 

 

Engine will not idle

Air Filter is Plugged

Replace or clean the air filter

 

Old or Improperly Mixed Fuel

Drain fuel tank / Add fresh fuel

 

 

mixture

Low idle speed

Improper carburetor

Adjust per instruction Pg. 25

 

adjustment

 

 

 

 

 

Engine will not accelerate

Old or Improperly Mixed Fuel

Drain fuel tank / Add fresh fuel

 

 

mixture

 

Improper carburetor

Take to an authorized service

 

adjustment

dealer for carburetor adjustment

 

 

 

 

Engine lacks power or

Cutting head bound with grass

Stop the engine and clean the

stalls when cutting

 

cutting attachment

 

Dirty air filter

Clean or replace the air filter

 

Old or Improperly Mixed Fuel

Drain fuel tank / Add fresh fuel

 

 

mixture

 

Improper carburetor

Take to an authorized service

 

adjustment

dealer for carburetor adjustment

 

 

 

 

Cutting head will not

Cutting head bound with grass

Stop the engine and clean cutting

advance line

 

attachment

 

 

 

Cutting head out of line

Refill with new line

 

Inner reel bound up

Replace the inner reel

 

Cutting head dirty

Clean inner reel and outer spool

 

Line welded

Disassemble, remove the welded

 

 

section and rewind the line

 

Line twisted when refilled

Disassemble and rewind the line

 

Not enough line is exposed

Push the Bump Knob and pull out

 

 

line until 4 in. (102 mm.) of line is

 

 

outside of the cutting attachment

 

 

 

 

28

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Contents OPERATOR’S Manual Table of Contents IntroductionCalifornia Emission Regulations Spark ArrestorSymbol Meaning Rules for Safe OperationWhile Operating While Operating with Cutting Blade Safety and International Symbols Symbol Meaning Safety Alert SymbolFor Service INFORMATION, Call Unleaded FuelTRIMMER/BRUSHCUTTER Safety HOT Surface WarningBrushcutters Replace dull blade Choke ControlKnow Your Unit ApplicationsFuel Cap Starter RopeAssembly Instructions Installing and Adjusting the J-HANDLEHandle Screws Top Clamp Middle Clamp Bottom Clamp Nuts DecalInstalling the Harness Removing and Installing Cutting Attachment ShieldRemove the Cutting Attachment Shield Install the Cutting BladeRemove the Cutting Attachment Counterclockwise 1/2 turn CounterclockwiseRemove the Cutting Blade and Install the Cutting Attachment Install the Cutting AttachmentRemove the Cutting Blade ClockwiseUsing Blended Fuels Using Fuel AdditivesOIL and Fuel Information OIL and Fuel Mixing InstructionsSTARTING/STOPPING Instructions On/Off Stop ControlPartial Choke Position B Full Choke Run Choke Lever Primer BulbInstalling the Cutting Attachment or Add-Ons Operating InstructionsOperating the CLICK-LINK System Model 790rHolding the Trimmer Adjusting Trimming Line Length Each time the head is bumped, about 1Decorative Trimming Tips for Best Trimming Results Using the Cutting BladeCutting Blade Operating Tips Maintenance Schedule Maintenance and Repair InstructionsFrequency Maintenance Required Refer to Line Installation Winding the Existing Inner ReelOuter Spool Spring Inner Reel Bump Knob Indexing TeethHolding Slots Installing a Prewound Reel AIR Filter MaintenanceRemoving the Air Filter/Muffler Cover Choke Lever Partial Choke Position B ScrewsReinstalling the Air Filter/Muffler Cover Cleaning the Air FilterAir Filter Carburetor Adjustment Clean Air FilterAdjust Idle Speed Screw Check Fuel MixtureACCESSORIES/REPLACEMENT Parts Replacing the Spark Plug110-120 in.lb .3-13.5 Nm 020Cleaning and Storage CleaningStorage Long Term StorageTroubleshooting Problem Cause ActionEngine SpecificationsDrive Shaft & Cutting Attachment Page Owners Warranty Responsibilities Ryobi Outdoor Products Ryobi Canada INC

780r specifications

The Ryobi 780R is a powerful and reliable gas-powered string trimmer known for its exceptional performance and user-friendly features. Designed for both professionals and homeowners, this tool offers versatility and efficiency for tackling tough trimming jobs around the yard.

One of the standout features of the Ryobi 780R is its robust 30cc 2-cycle engine. This engine provides ample power to handle thick weeds and overgrown grass, ensuring a clean and precise cut with every pass. The lightweight design of the trimmer enhances maneuverability, making it easy to navigate around obstacles such as trees, flower beds, and garden furniture.

The trimmer is equipped with a premium 18-inch cutting swath, allowing for a wider range to be covered in a single pass. This feature can significantly reduce the time required to complete larger trimming tasks. Additionally, the variable speed throttle gives users the flexibility to adjust the cutting power based on the density of the vegetation, offering greater control.

One of the notable technologies in the Ryobi 780R is its Easy Start technology, which simplifies the starting process, reducing the effort required to get the engine running. This is particularly beneficial for users who may struggle with traditional pull-start mechanisms. The trimmer also features an automatic choke system, ensuring optimal engine performance in various conditions.

Another important characteristic is its dual-line feed system. The Ryobi 780R uses a bump head for easy line advancement; simply bump the head on the ground to extend the line as needed. This functionality minimizes downtime and allows users to focus on the task at hand. The dual-line setup also enhances cutting efficiency, making it a great choice for tougher vegetation.

In terms of comfort, the Ryobi 780R incorporates ergonomic handle designs that reduce user fatigue during extended use. The adjustable shaft allows for personalized length settings, catering to users of varying heights, further enhancing comfort and control. With built-in safety features such as a protective shield, users can operate the trimmer with peace of mind.

The Ryobi 780R is not just a powerful trimmer but also a thoughtfully designed tool that combines performance with user convenience. Whether you are maintaining a small garden or handling larger landscaping tasks, this trimmer offers the reliability and efficiency needed to achieve a well-kept lawn. Its blend of innovation and practical features makes it a favored choice among gardening enthusiasts and professionals alike.