Makita EN4950H User Manual (English)

Other manuals for Makita EN4950H

Technical Manual18 pages

Instruction Manual244 pages

Questions and Answers:

A
Ashley GreenAug 25, 2025
Why my Makita Trimmer engine does not start?
- A
  atylerAug 26, 2025
  If your Makita Trimmer's engine won't start, several factors could be at play. First, ensure you've primed the pump adequately by pushing it 7 to 10 times. Check that you're pulling the starter rope strongly enough. Verify that there's sufficient fuel and that the fuel filter isn't clogged. Also, inspect the fuel tube for any breaks and ensure the fuel isn't old (replace fuel older than 1 month). Other potential causes include a detached plug cap, a contaminated or improperly gapped spark plug, or excessive fuel suction. If the issue persists, it may be due to an abnormal carburetor, a starter rope that can't be pulled, or an abnormal drive system, requiring professional inspection.
F
fuentesjonathanAug 26, 2025
What to do if the cutting blades on my Makita EN4950H won't stop?
- B
  blake01Aug 27, 2025
  If the cutting blades of your Makita Trimmer do not stop immediately, it could be due to high idling rotation, which requires adjustment. Another potential cause is a detached throttle wire; ensure it is securely attached. If neither of these solutions resolves the issue, the drive system may be abnormal, necessitating professional inspection and maintenance.
F
foleysaraAug 27, 2025
Why does my Makita EN4950H engine stop soon after starting?
- F
  fzavalaAug 27, 2025
  If your Makita Trimmer engine stops soon after starting, it might not be warmed up sufficiently; perform a warm-up operation. Ensure the choke lever is correctly set to the appropriate position after the engine warms up. A clogged fuel filter or a contaminated air cleaner can also cause this issue, so clean or replace them as needed. If the problem persists, the carburetor or drive system may be abnormal, requiring professional inspection and maintenance.
D
Donald GainesAug 28, 2025
What to do if the cutting blade on my Makita EN4950H does not move?
- C
  christophersmithAug 28, 2025
  If the cutting blade on your Makita Trimmer isn't moving, first ensure the cutter unit's angle is correct and the angle lock is properly engaged. Next, check the cutting blades-tightening nut and tighten it securely if it's loose. Also, inspect for and remove any twigs or foreign matter caught by the cutting blades. If the blade still doesn't move, the drive system may be abnormal, requiring professional inspection and maintenance.
A
Andre NelsonAug 29, 2025
What to do if my Makita EN4950H engine won't stop?
- D
  davidgriffinAug 29, 2025
  If your Makita Trimmer engine does not stop, check for a detached connector and attach it securely. If the issue continues, there may be an abnormal electric system, requiring professional inspection and maintenance.
M
martinezjenniferAug 31, 2025
What to do if the cutting blades do not stop immediately on my Makita EN4950H?
- W
  William VillaAug 31, 2025
  If the cutting blades on your Makita Trimmer don't stop immediately, it could be due to high idling rotation, which requires adjustment. Another cause might be a detached throttle wire, which needs to be securely reattached. If the issue persists, there may be an abnormal drive system, and it is recommended to request inspection and maintenance.
B
bknoxSep 1, 2025
What to do if the cutting blade does not move on my Makita EN4950H Trimmer?
- N
  Nicholas WebbSep 1, 2025
  If the cutting blade on your Makita Trimmer isn't moving, ensure the cutter unit's angle lock is properly engaged. Check if the cutting blades-tightening nut is loose and tighten it securely. Also, inspect for any twigs or foreign matter caught by the cutting blades and remove them. If the issue persists, the drive system may be abnormal, requiring professional inspection and maintenance.
I
Ian AndersonSep 2, 2025
What to do if cutting blades do not stop immediately on my Makita EN4950H Trimmer?
- S
  Sandra FitzpatrickSep 2, 2025
  If the cutting blades on your Makita Trimmer don't stop immediately, there are a few things to check: * **High Idling Rotation:** The idling rotation may be too high; adjust it. * **Throttle Wire:** Ensure the throttle wire is securely attached. * **Other issues:** For an abnormal drive system, make a request for inspection and maintenance.
J
Jesse ChangSep 3, 2025
What to do if cutting blade does not move on my Makita Trimmer?
- C
  Candace MoralesSep 3, 2025
  If the cutting blade on your Makita Trimmer isn't moving, check the following: * **Cutter Unit Angle:** Ensure the angle lock engages properly. * **Tightening Nut:** Make sure the cutting blades-tightening nut is tightened securely. * **Obstructions:** Remove any twigs or foreign matter caught by the cutting blades. * **Other issues:** For an abnormal drive system, make a request for inspection and maintenance.
J
Joel WilliamsSep 4, 2025
What to do if Makita EN4950H cutting blade does not move?
- K
  Kathleen MaldonadoSep 5, 2025
  If the cutting blade of your Makita Trimmer does not move, consider the following: * The angle of the cutter unit might be inappropriate. Make sure the angle lock engages properly. * The cutting blades-tightening nut might be loosened. Tighten it securely. * Twigs might be caught by the cutting blades. Remove any foreign matter.

Makita EN4950H Specifications

General

Type	Petrol/gas hedge trimmer
Depth	2550 mm
Width	242 mm
Height	241 mm
Blade size	490 mm
Blade type	Single blade
Product color	Black, Blue
Battery technology	-
Handle(s) features	Soft grip
Fuel tank capacity	0.6 L
Engine displacement	25.4 cm³
Motor rotation speed	10000 RPM
Engine number of strokes	4
Engine power	770 W
Power source	Gasoline

Summary

Safety Instructions

General Safety Instructions

Read and understand the manual, follow safety precautions, and use the equipment properly for safe operation.

Intended Use

This pole hedge trimmer is designed exclusively for trimming hedges and bushes. Do not use for other purposes.

Personal Protective Equipment (PPE)

Use appropriate protective gear including helmet, goggles, ear defenders, overalls, gloves, and sturdy shoes.

Work Area Safety

Maintain distance from electric lines, operate in ventilated areas, keep bystanders away, and clear debris.

Starting the Pole Hedge Trimmer

Pre-Start Checks and Procedures

Assemble machine, keep blades clear, check for obstructions, and grip handles firmly before starting.

Ensuring Secure Footing

Stop engine when resting or unattended, keep area clear of combustibles, and ensure stable footing.

Refuelling and Fuel Handling

Fuel Inspection and Refill

Check engine oil level when cool. Top up to upper limit mark. Use recommended oil.

Fuel Handling Precautions

Handle fuel with care in ventilated areas. Avoid vapors, skin contact, and eye contact.

Operating the Pole Hedge Trimmer

Safe Operation Practices

Operate with both hands, grip firmly, keep right hand at shoulder height, and avoid changing grip.

Cutting and Obstacle Safety

Avoid hitting obstacles, be careful near fences, keep blades clear of debris, and check for damage.

Maintenance and Care

Vibration Effects and Reduction

Understand vibration symptoms and take steps to reduce risk of 'white finger disease'.

Routine Maintenance

Service with genuine parts, clean regularly, check fasteners, and minimize emissions.

Storage Procedures

Prepare for storage by cleaning and maintaining. Store in a safe, ventilated, locked room.

First Aid Procedures

Ensure a first aid kit is available and know what information to provide in an emergency.

Assembly and Accessories

Connecting Trimmer Unit

Secure blades with cover before connecting trimmer unit to pole. Ensure shaft is fully inserted.

Shoulder Strap Usage

Wear strap over left shoulder, trimmer unit on right side. Adjust strap length for comfortable working position.

Detaching the Machine

Push notches to detach. Maintain complete control to avoid serious injury or death.

Fuel and Oil Management

Engine Oil Inspection and Refill

Check engine oil level when cool. Top up to the upper limit mark using recommended oil.

Oil Cap Handling

Remove dust from oil port, detach oil cap carefully. Keep cap clean to prevent engine wear.

Refuelling Procedures

Fuel Handling and Storage

Handle fuel with care in ventilated areas. Avoid vapors, skin contact, and eye contact. Use fuel within 4 weeks.

Refuelling Steps

Loosen tank cap, refuel with port upward, do not fill to top. Wipe cap area, tighten cap securely.

Pre-Start Engine Checks

Work Area Safety Zone

Maintain a 15-meter safety zone around the work area, keeping persons and animals out.

Machine Readiness

Ensure safe operation: check blades, throttle, handles, and stop switch are functioning correctly.

Starting Safety and Obstructions

Start engine as instructed only. Ensure cutting blades are not obstructed by stones or foreign objects.

Electrical Hazard Awareness

Be aware of electrical lines and fences in the work area to prevent electrical shock.

Starting the Engine

Recoil Starter Operation

Pull starter knob gently to compression, then strongly. Return knob to original point without releasing.

Warm-up and Cold Start Procedures

Perform warm-up operation. Use choke lever for cold starts, especially in winter, following specific steps.

Stopping and Idling Adjustments

Engine Stopping Procedure

Release throttle lever fully, then set I-O switch to STOP. Allow cutting head to slow down.

Low-Speed Rotation (Idling) Adjustment

Adjust idling speed using the carburetor adjusting screw. Turn right to increase, left to decrease.

Checking Low-Speed Rotation

Set low-speed rotation to 3,000 rpm. Contact authorized service center for adjustments if needed.

Advanced Operating Techniques

Blade Safety and Handling

Do not touch blades during operation. Keep hands and feet away from moving blades.

Operating Environment

Avoid exhaust gases, operate in good light, ensure secure footing, and check area for obstructions.

Trimming Techniques

Align blades for top/side trimming with specific movements. Be careful near fences and obstacles.

Breakdowns and Jams

Stop engine for strange noises/vibrations, jammed branches, or obstacle contact. Check for damage.

Cutting Angle Adjustment

Adjusting Cutter Unit Angle

Hold handle and angle lock, pull lock gently to change angle. Return lock gently after adjustment.

Cutter Unit Tightening

Tighten bolt (axis of angle adjustment) using socket and hex wrenches. Do not overtighten.

Blade Maintenance

Blade Sharpening and Clearance

Have blunt blades sharpened. Adjust blade clearance for proper cutting performance and wear.

Blade Safety and Replacement

Never repair bent/broken blades; replace damaged ones. Always wear gloves when handling blades.

Lubrication and Daily Checks

Gearbox Lubrication

Grease gearbox every 25 working hours. Observe greasing intervals and amounts to avoid damage.

Pre-Use and Post-Use Checks

Check for loose parts, cutting unit security, cooling passages before use. Clean externally after use.

Engine Oil Replacement

Oil Replacement Safety

Ensure engine and oil are cooled down before replacement to avoid scalds or fire.

Engine Oil Draining Procedure

Tighten fuel cap, place container under drain hole, remove drain bolt and oil cap to drain oil.

Air Cleaner Maintenance

Cleaning the Air Cleaner Elements

Check and clean daily or every 10 hours. Tap elements to remove dirt. Dry completely after washing.

Air Cleaner Maintenance Notice

Clean elements frequently in dusty conditions. Remove oil from elements. Do not place on dirty ground.

Spark Plug and Fuel Filter

Spark Plug Inspection and Gap

Check spark plug gap is 0.7-0.8 mm. Adjust, clean, or replace if clogged or contaminated.

Fuel Filter Maintenance

Check filter monthly/50 hours. Clean gently. Replace if clogged or damaged.

Fuel Pipe and Parts Cleaning

Fuel Pipe Inspection and Replacement

Check fuel pipe daily. Replace every 200 hours or yearly, or if leakage occurs.

General Parts Cleaning

Keep engine clean by wiping. Keep cylinder fins free of dust to prevent seizure.

Gasket and Packing Replacement

Gasket/Packing Replacement

Replace gaskets and packings if the engine is disassembled. Contact service center for other maintenance.

Long-Term Storage

Fuel Draining for Storage

Stop engine, wait for cooling. Drain fuel from tank and carburetor completely.

Engine Preparation for Storage

Add oil to spark plug hole, pull starter to spread. Attach blade cover. Store safely.

Storage Attention and Schedule

Pre-Startup Oil Check

Before startup after long storage, replace oil as it deteriorates. Refer to P20 for procedure.

Maintenance Schedule Overview

Table outlining inspection and maintenance items based on operating time.

Troubleshooting Guide

Engine Starting Issues

Check primer, fuel, filter, suction, plug cap, spark plug, carburetor for starting problems.

Engine Stopping and Speed Issues

Address clogged filter, air cleaner, abnormal carburetor, or incorrect choke setting for stopping/speed problems.

Blade and Control Problems

Check for blade movement issues, loose blades, throttle wire detachment, or engine not stopping.

Related product manuals