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Makita EA7900P - User Manual

Makita EA7900P
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EA7300P
EA7900P
Operator’s and Safety Manual
for Gasoline Chain Saws (page 2 - 38)
Manuel d’emploi et de sécurité
de tronçonneuses thermiques (page 39 - 75)
WARNING!
Read and understand this Manual. Always follow safety precautions in the Operator’s and Safety Manual. Improper use can cause serious injury! Preserve this Manual carefully!
WARNING!
FUELS WITH MORE THAN 10% ETHANOL ARE NOT APPROVED FOR USE IN MAKITA 2-STROKE ENGINES!
Use of alternative fuels, such as E-20 (20% ethanol), E-85 (85% ethanol) or any fuels not meeting MAKITA requirements are not approved for use in MAKITA 2-stroke gasoline engines!
USE OF ALTERNATIVE FUELS CAN CAUSE THE FOLLOWING PROBLEMS:
Poor engine performance, loss of power, overheating, fuel vapor lock, improper clutch engagement, premature deterioration of fuel lines, premature deterioration of gaskets,
premature deterioration of carburetors.
USING ALTERNATIVE FUELS AND/OR 2-STROKE OILS NOT ACCORDING TO JASO FC OR ISO-L-EGD IN MAKITA 2-STROKE ENGINES WILL VOID YOUR ENGINE WARRANTY!
ATTENTION!
Suivez toujours les conseils de sécurité du présent manuel d’emploi et de sécurité. Une utilisation incorrecte de la tronçonneuse peut entraîner des blessures graves!
Lisez et comprenez ce manuel. Conservez avec soin ce manuel!
ATTENTION!
LES CARBURANTS CONTENANT PLUS DE 10 % D’ÉTHANOL NE SONT PAS AUTORISÉS POUR L’UTILISATION DANS LES MOTEURS 2 TEMPS!
Les carburants alternatifs, tels que E-20 (20 % d‘éthanol), E-85 (85 % d’éthanol) ou tout autre carburant n’étant pas conformes aux exigences MAKITA ne sont pas autorisés
pour l’utilisation dans les moteurs essence à 2 temps MAKITA!
L’UTILISATION DE CARBURANTS ALTERNATIFS PEUT CAUSER LES PROBLÈMES SUIVANTS:
Faible performance moteur, Perte de puissance, Surchauffe, Bouchons de vapeur dans la conduite d’essence, Embrayage incorrect, Détérioration prématurée des conduites
d’essence, Détérioration prématurée des joints d’étanchéité, Détérioration prématurée des carburateurs.
L’UTILISATION DE CARBURANTS ALTERNATIFS ET/OU D’HUILES 2 TEMPS NON-CONFORMES À LA NORME JASO FC OU ISO-L-EGD DANS LES MOTEURS À 2 TEMPS
MAKITA ANNULERA VOTRE GARANTIE MOTEUR!

Table of Contents

Questions and Answers

  • E
    Eugene MorrisonAug 18, 2025
    Why is my Makita Chainsaw engine not starting?
    • C
      Catherine BryantAug 18, 2025
      There could be several reasons why your Makita Chainsaw engine won't start or starts with difficulty: a malfunction in the fuel supply, compression, or a mechanical issue. Check the ignition spark, fuel tank, wiring, and switch. Other potential causes include an incorrect choke position, a defective carburetor, a dirty fuel filter, or a bent/interrupted fuel line. Adjust the choke and inspect the carburetor, fuel filter, and fuel line. Also, inspect and replace packing rings or the cylinder if you find a defective cylinder base packing ring, defective radial shaft packings, or defective cylinder or piston rings. Finally, check the spark plug, starter spring, or other engine parts, and repair or replace them as necessary.
  • N
    nicholasgarnerAug 21, 2025
    Why won't my Makita EA7900P Chainsaw engine start?
    • D
      Daniel LoganAug 21, 2025
      If your Makita Chainsaw engine doesn't start easily or at all, there may be a malfunction in the fuel supply, compression system, or a mechanical issue. You should check the ignition spark, fuel supply, and ensure the starter engages properly. Also, correct the carburetor position and inspect for any defective components.
  • K
    Karen DuncanAug 23, 2025
    Why is my Makita EA7900P Chainsaw engine hard to start?
    • A
      Ashley LeeAug 25, 2025
      If your Makita Chainsaw engine doesn't start easily, it could stem from issues within the fuel supply, compression, or mechanical components. Check the STOP switch position and inspect for wiring faults, a defective plug cap or spark plug. Ensure the choke is correctly positioned, the carburetor isn't defective, the suction head is clean, and the fuel line is free from bends or interruptions. Also, examine the cylinder base packing ring, radial shaft packings, cylinder or piston rings, and the spark plug seal. Finally, verify the starter spring and internal engine parts are intact.
  • A
    Amanda CookAug 26, 2025
    How to troubleshoot insufficient power in my Makita EA7900P?
    • C
      Casey OconnellAug 26, 2025
      If your Makita Chainsaw lacks power, several factors could be responsible: * A dirty air filter. * Incorrect carburetor adjustment. * A clogged muffler. * A blocked exhaust channel in the cylinder. * A clogged spark arrester screen. Check each of these components to restore optimal performance.
  • D
    David MelendezAug 28, 2025
    Why is my Makita Chainsaw not lubricating the chain?
    • M
      michael78Aug 28, 2025
      If your Makita Chainsaw chain isn't being lubricated, the oil tank might be empty. Also, the oil guide groove might be dirty. Check these two things to ensure proper chain lubrication.
  • J
    Jasmine SmallAug 30, 2025
    Why is my Makita EA7900P Chainsaw difficult to start when warm?
    • T
      Taylor LarsonAug 30, 2025
      If you're having trouble starting your warm Makita Chainsaw, the carburetor adjustment might be incorrect. You should check it.
  • S
    Sean KelleySep 1, 2025
    What to do if the chain on my Makita EA7900P does not run?
    • A
      Angela BrownSep 1, 2025
      If the chain on your Makita Chainsaw isn't running, it's possible that the chain brake is engaged. Please, check the chain brake.
  • T
    Tiffany SmithSep 4, 2025
    What to do if my Makita EA7900P engine starts, but dies immediately?
    • A
      Angela LiSep 4, 2025
      If your Makita Chainsaw starts but dies immediately, the idling adjustment might be wrong, or the fuel filter or carburetor might be dirty. Try adjusting the idling and cleaning or replacing the fuel filter and carburetor. Other possible reasons are defective tank venting, an interrupted fuel line, a defective cable, or a defective STOP switch. Check the tank venting, fuel line, cable, and STOP switch. Also, the decompression valve might be dirty, so clean the decompression valve.
  • H
    Heather MartinezSep 6, 2025
    Why is there no chain lubrication on my Makita EA7900P?
    • A
      Alyssa SchwartzSep 6, 2025
      If there is no chain lubrication on your Makita Chainsaw, the oil tank might be empty. Refill the oil tank. Alternatively, the oil guide groove might be dirty, so clean it. Another possibility is that the oil pump adjusting screw is incorrectly adjusted, so adjust the oil pump adjusting screw.
  • D
    danielthompsonSep 8, 2025
    How to increase the power of my Makita EA7900P?
    • S
      Stacey DonovanSep 8, 2025
      If your Makita Chainsaw has insufficient power, the air filter might be dirty, the carburetor might be wrongly adjusted, the muffler could be clogged, the exhaust channel in the cylinder might be blocked, or the spark arrester screen could be clogged. Try cleaning or replacing the air filter, adjusting the carburetor, and clearing any clogs in the muffler and exhaust.

Summary

FEDERAL (USEPA) and;or CALIFORNIA EMISSION CONTROL WARRANTY STATEMENT

YOUR WARRANTY RIGHTS AND OBLIGATIONS

Outlines owner and manufacturer responsibilities for emissions control system warranty.

MANUFACTURERS WARRANTY COVERAGE

Details MAKITA's warranty for the emissions control system.

OWNERS WARRANTY RESPONSIBILITIES

Specifies owner's duties for maintenance and presenting the engine for repair.

DEFECTS WARRANTY REQUIREMENTS

Explains when the warranty period begins and its duration.

GENERAL EMISSIONS WARRANTY COVERAGE

Covers MAKITA's warranty for emission-related parts and conditions.

WARRANTED PARTS LIST (EVAPORATIVE)

WARRANTED PARTS LIST (EXHAUST)

Delivery inventory

Symbols

Safety precautions for chain saw operators

Additional safety precautions

General Safety Precautions

The operator

Details physical and mental requirements for operating the chain saw safely.

Proper clothing

The saw

The use of the saw

Instructions on how to use the saw, including transport.

Chain saw operating instructions

Fueling

Proper procedure for fueling the chain saw with the correct mixture.

Starting

Step-by-step guide to safely start the chain saw engine.

Important adjustments

Working conditions

Cutting instructions

Reactive forces during the cut, including kickback

Kickback

Details the cause, effect, and danger of kickback.

Devices for reducing the risk of kickback injury

To avoid kickback

Provides practical steps and precautions to prevent kickback.

Cutting techniques

Felling

Detailed instructions and safety for cutting down trees.

Bucking

Limbing

Maintenance and Repair

Maintaining and storing the saw

Instructions for proper upkeep and storage of the chain saw.

Denomination of components

Identification plate

Location and purpose of the saw's identification plate.

Technical data

PUTTING INTO OPERATION

Mounting the guide bar and saw chain

Step-by-step instructions for attaching the guide bar and chain.

Tightening the saw chain

Checking the chain tension

Chain brake

Fuel

Fuel mixture

Details the correct ratio of gasoline and oil for the fuel mix.

Storage

Guidelines for safe storage of fuel and fuel mixtures.

Chain oil

Important note on bio-degradable chain oils

Recommendations for using and storing bio-degradable chain oil.

Refuelling

Lubricating the chain

Guidance on ensuring sufficient chain oil during operation.

Checking the chain lubrication

Adjusting the chain lubrication

Starting the engine

Stopping the engine

Procedures for safely shutting down the chain saw engine.

Checking the chain brake

Adjusting the carburetor

Working in winter

MAINTENANCE

Sharpening the saw chain

How to properly sharpen the saw chain for optimal cutting.

Files and how to work with them

Cleaning the brake band and sprocket interior

Cleaning the guide bar

Replacing the saw chain

Replacing the fuel filter

Cleaning the air filter

Choosing the right filter

Guidance on selecting the correct air filter for different conditions.

Replacing the spark plug

Checking the ignition spark

Checking the muffler screws

Replacing the starter cable; Replacing the return spring

Mounting the fan housing

Cleaning the cylinder area

Replacing;cleaning the spark arrester screen

Instructions for periodic maintenance

Spare parts

Guarantee

Troubleshooting

Extract from the spare parts list

Makita EA7900P Specifications

General IconGeneral
BrandMakita
ModelEA7900P
CategoryChainsaw
LanguageEnglish

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