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Ryobi RY10518 - User Manual

Ryobi RY10518
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Your chain saw has been engineered and manufactured to Ryobi’s high standard for dependability, ease of operation, and
operator safety. When properly cared for, it will give you years of rugged, trouble-free performance.
WARNING: To reduce the risk of injury, the user must read and understand the operator’s manual before using
this product.
Thank you for buying a Ryobi product.
Cette scie à chaîne a été conçue et fabriquée conformément aux
strictes normes de fiabilité, simplicité d’emploi et sécurité d’utilisation
de Ryobi. Correctement entretenue, elle vous donnera des années
de fonctionnement robuste et sans problème.
AVERTISSEMENT : Pour réduire les risques de
blessures, l’utilisateur doit lire et veiller à bien comprendre le
manuel d’utilisation avant d’employer ce produit.
Merci d’avoir acheté un produit
Ryobi.
Su motosierra ha sido diseñada y fabricada de conformidad con las
estrictas normas de Ryobi para brindar fiabilidad, facilidad de uso
y seguridad para el operador. Con el debido cuidado, le brindará
muchos años de sólido y eficiente funcionamiento.
ADVERTENCIA: Para reducir el riesgo de lesiones,
el usuario debe leer y comprender el manual del operador antes
de usar este producto.
Le agradecemos la compra de un producto
Ryobi.
OPERATOR’S MANUAL
RY10520 / 20 in. 46cc Chain Saw
RY10518 / 18 in. 46cc Chain Saw
(ALL VERSIONS)
ENGINE/EVAP. FAMILY: *HCPS.0464AC
CONSERVER CE MANUEL POUR
FUTURE RÉFÉRENCE
GUARDE ESTE MANUAL PARA
FUTURAS CONSULTAS
SAVE THIS MANUAL FOR FUTURE REFERENCE

Table of Contents

Questions and Answers

  • M
    Melody RiceAug 16, 2025
    Why Ryobi RY10518 Chainsaw engine will not start?
    • K
      Kenneth RiosAug 16, 2025
      If your Ryobi Chainsaw engine won't start, it could be due to a few reasons. First, ensure the ignition switch is in the RUN position. Another possible cause is a flooded engine. If there is no spark, clean or replace the spark plug and reset the spark plug gap. If the engine is flooded, turn the ignition switch OFF, remove the spark plug, move the choke lever to the RUN position, and pull the starter cord 15 to 20 times to clear excess fuel. Then, clean and reinstall the spark plug, set the ignition switch to RUN, push and fully release the primer bulb 7 times, and pull the starter three times with the choke lever at RUN. If it still doesn't start, move the choke lever to FULL CHOKE and repeat the normal starting procedure. As a last resort, try again with a new spark plug.
  • K
    Kyle HarveyAug 19, 2025
    Why does my Ryobi RY10518 Chainsaw engine not reach full speed and emit excessive smoke?
    • P
      Paul HallAug 19, 2025
      There are several reasons why your Ryobi Chainsaw engine might not reach full speed or might emit excessive smoke: * The lubricant/fuel mixture might be incorrect. Use fresh fuel and the correct 2-cycle lubricant mix ratio. * The air filter might be dirty. Clean the air filter. * The spark arrestor screen might be dirty. Clean the spark arrestor screen. * The carburetor may require adjustment. Contact an authorized service center for carburetor adjustment.
  • C
    Christine Moore MDAug 22, 2025
    What to do if Ryobi Chainsaw engine will not start?
    • J
      johnny80Aug 22, 2025
      If your Ryobi Chainsaw engine won't start: * Clean or replace the spark plug and reset the spark plug gap. * With the ignition switch OFF, remove the spark plug, move the choke lever to the RUN position, and pull the starter cord 15 to 20 times to clear excess fuel. Then, clean and reinstall the spark plug. * Set the ignition switch to RUN, push and fully release the primer bulb 7 times, and pull the starter cord three times with the choke lever at RUN. If the engine doesn't start, move the choke lever to FULL CHOKE and repeat the normal starting procedure. If it still fails, repeat the procedure with a new spark plug.
  • S
    Shannon WhiteAug 25, 2025
    What to do if Ryobi RY10518 engine starts, runs, and accelerates but will not idle?
    • M
      Michael WhiteAug 26, 2025
      If your Ryobi Chainsaw engine starts, runs, and accelerates but will not idle, and the chain turns at idle, the carburetor may require adjustment to the idle speed. * Turn the idle speed screw “T” clockwise to increase idle speed. * Turn the idle speed screw “T” counterclockwise to decrease speed.
  • S
    Stanley Sanders IIAug 27, 2025
    What to do if Ryobi Chainsaw engine does not reach full speed and/or emits excessive smoke?
    • K
      Kelly HollowayAug 28, 2025
      If your Ryobi Chainsaw engine doesn't reach full speed or emits excessive smoke, several factors could be at play. Begin by ensuring you're using fresh fuel and the correct 2-cycle lubricant mix ratio. Also, a dirty air filter can cause this issue, so clean the air filter. Another potential cause is a dirty spark arrestor screen, which should be cleaned. If these steps don't resolve the problem, the carburetor may require adjustment; in this case, contact an authorized service center.
  • B
    bellzacharyAug 30, 2025
    What to do if Ryobi RY10518 bar and chain running hot and smoking?
    • K
      Kelly WalkerAug 30, 2025
      If the bar and chain of your Ryobi Chainsaw are running hot and smoking: * Ensure the chain oil tank is full; refill it every time you fill the fuel tank. * Check the chain tension and adjust it according to the instructions if it's too tight. * Test the oiler by running the chainsaw at half throttle for 30 to 45 seconds, then check for lubricant dripping from the SAFE-T-TIP® and guide bar. If there's no lubricant, contact an authorized service center.
  • S
    Stephen WilsonSep 2, 2025
    What to do if Ryobi Chainsaw engine starts, then dies?
    • C
      Christina CochranSep 2, 2025
      If your Ryobi Chainsaw engine starts and then dies, the carburetor may require adjustment. Contact an authorized service center for carburetor adjustment.
  • J
    Jamie ShepherdSep 4, 2025
    What to do if Ryobi RY10518 engine starts and runs, but chain is not rotating?
    • A
      Amanda EverettSep 4, 2025
      If your Ryobi Chainsaw engine starts and runs, but the chain is not rotating: * Ensure the chain brake is released. * Check the chain tension and adjust it if it's too tight. * Verify that the guide bar and chain are assembled correctly. * Inspect the guide bar and chain for any damage. * The drive sprocket teeth might be damaged. Contact an authorized service center for drive sprocket replacement.
  • A
    amanda35Sep 7, 2025
    How to fix Ryobi RY10518 Chainsaw chain tensioning dial if it is difficult to turn?
    • V
      Victor LopezSep 7, 2025
      If the chain tensioning dial on your Ryobi Chainsaw is difficult to turn: * Raise the tip of the guide bar while rotating the tension adjustment dial. * Press in the clutch cover lock knob and rotate it counterclockwise to slightly loosen the clutch cover before adjusting the chain tension.
  • J
    Jennifer RobinsonSep 10, 2025
    What to do if Ryobi Chainsaw engine starts but will not accelerate properly?
    • A
      Ashley WallaceSep 10, 2025
      If your Ryobi Chainsaw engine starts but will not accelerate properly, the carburetor may require adjustment. Contact an authorized service center for carburetor adjustment.

Summary

GENERAL SAFETY RULES

READ ALL INSTRUCTIONS

User must read and understand all instructions before operating.

SPECIFIC SAFETY RULES

REFUELING (DO NOT SMOKE!)

Safe refueling procedures, emphasizing fire prevention and avoiding smoke.

KICKBACK

Explanation of kickback and necessary safety precautions to prevent injury.

FEATURES

ASSEMBLY

OPERATION

FUEL AND REFUELING

Safe fuel handling and refueling procedures, including fuel mixing instructions.

MIXING THE FUEL

Instructions for correctly mixing gasoline and 2-cycle lubricant for the engine.

STARTING THE ENGINE

Steps for starting a cold or warm engine, including essential safety precautions.

STARTING THE ENGINE (continued)

Continued engine starting instructions, including temperature and cautionary notes.

To Start a Warm Engine

Procedure for starting a warm engine, including choke lever operation details.

STOPPING THE ENGINE

Instructions for safely stopping the engine using the ignition switch or choke lever.

WARNING: THE SAW CHAIN SHOULD NEVER TURN AT IDLE.

WARNING: KICKBACK occurs when the moving chain...

Detailed explanation of kickback causes, effects, and the necessity of safety precautions.

KICKBACK PRECAUTIONS

Information on rotational kickback and how to avoid it using proper techniques.

PROPER GRIP ON HANDLES

WARNING: NEVER USE A LEFT-HANDED (CROSS-HANDED) GRIP...

Warning against improper grip stances that can lead to loss of saw control.

PROPER CUTTING STANCE

BASIC OPERATING;CUTTING PROCEDURES

FELLING TREES

Essential warnings and procedures for safely felling trees under hazardous conditions.

PROPER PROCEDURE FOR TREE FELLING

Detailed steps for felling a tree, including escape routes, wind, and lean.

Tree Felling Notch and Back Cut

Instructions on making notch and back cut, using hinge wood for controlled felling.

BUCKING

BUCKING LOGS UNDER STRESS

LIMBING AND PRUNING

WARNING: NEVER CLIMB INTO A TREE TO LIMB OR PRUNE.

Critical warning against climbing trees or using unstable platforms for pruning.

CUTTING SPRINGPOLES

MAINTENANCE

WARNING: WHEN SERVICING, USE ONLY IDENTICAL REPLACEMENT PARTS.

REPLACING THE GUIDE BAR AND CHAIN

Replacing Guide Bar and Chain Steps

Adjusting Chain Tension

Instructions on properly tensioning the saw chain using the tensioning screw.

ADJUSTING THE CHAIN TENSION

Procedures for adjusting chain tension, including cold and warm chain considerations.

CHAIN MAINTENANCE

CAUTION: Check that the switch is in the STOP O position before you work on the saw.

SHARPENING THE CUTTERS

Guide on sharpening chain cutters to specified angles for optimal cutting performance.

CAUTION: A dull or improperly sharpened chain can cause excessive engine speed...

TOP PLATE FILING ANGLE

SIDE PLATE ANGLE

MAINTAINING DEPTH GAUGE CLEARANCE

CLEANING THE AIR FILTER

CAUTION: Make sure the air filter is correctly placed...

ADJUSTING THE CARBURETOR

Guide on adjusting the carburetor for proper engine idle speed.

WARNING: THE SAW CHAIN SHOULD NEVER TURN AT IDLE.

Warning that the saw chain must not turn at idle, emphasizing safety.

INSPECTING AND CLEANING CHAIN BRAKE

TROUBLESHOOTING

Engine will not start

Possible causes and solutions for engine failure to start.

Engine starts, runs, and accelerates but will not idle

Engine starts but will not accelerate properly

Chain turns at idle

Solutions for when the saw chain rotates while the engine is idling.

Engine starts, then dies

Engine starts and runs, but chain is not rotating

Diagnosing why the engine runs but the chain remains stationary.

Engine starts but will not run properly at high speed

Engine does not reach full speed and;or emits excessive smoke

WARRANTY

Ryobi RY10518 Specifications

General IconGeneral
Bar Length18 in
Weight13 lbs
TypeChainsaw
Chain Pitch3/8 inch
Chain Gauge.050 inch

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