Q: Why does the AL-KO Tech 120 OHV mower turn off as soon as I release the throttle bar?

This behavior is completely normal and intentional on the AL-KO Tech 120 OHV mower. The engine stops when you release the safety bar, which is the main control and safety device of the machine. It is not really a throttle bar issue, but a very important safety system integrated into the mower. The safety bar must be pulled towards the upper handle and held continuously during the operation of the mower. Contrary to what one might expect, the bar does not engage automatically or lock. You must actively hold it with your hand on the rear handle. As soon as you release this bar, the engine immediately cuts off. This is an essential safety mechanism that stops the mower in case of a fall, loss of balance, or if you accidentally let go. The operation differs slightly depending on whether your mower is equipped with a blade attachment (an option available on this model). If your mower does not have a blade attachment, releasing the bar stops both the engine and the blade. If it is equipped with a blade attachment, releasing the bar only stops the blade while the engine continues to run, allowing you to control both independently. To use the mower correctly, firmly hold the safety bar against the upper handle while mowing. Set the speed lever (which controls the engine speed) to a mid-position after starting. If you need to temporarily stop the mower, simply release the bar. For a complete stop, raise the speed lever to the stop position, then release the safety bar. This safety system is mandatory and cannot be modified or bypassed. Therefore, it is not a setting that could be adjusted, but the normal and safe operation of the product. If you find it difficult to hold the bar continuously, this is a normal feeling during the first use. The engine is designed to remain active only if you maintain control of the machine.

Q: Where is the primer button (primerknopf) located on the AL-KO Classic 4.62 P-A lawn mower?

The primer button primerknopf on the AL-KO Classic 4.62 P-A lawn mower is located on the engine, as shown in illustration 16 of the user manual. It is a small rubber button situated near the carburetor and the engine cover. Starting procedure with priming: Press the primer button 3 times at intervals of about 2 seconds before starting the engine. If the outside temperature is below 10 °C , press the button 5 times instead of 3. This operation sends fuel into the fuel system and makes it easier to start the engine when cold. Important: Never use the primer button when the engine is hot or already at temperature. Only use the primerknopf for cold starts. Once primed, pull the safety brake handle towards the chassis to prepare the engine for starting. The engine should then start more easily due to the presence of fuel in the fuel circuit.

Question 1

The wheel drive (Radantrieb) of my lawn mower is not working - what should I do?

Accepted Answer

Wheel drive not working on your AL-KO 36V Energy Flex 46.2 Li SP-W Comfort? Here are the checks to perform in order.

Check the operation of the clutch lever. The clutch lever must be firmly pressed against the handlebar and held in position constantly for the drive to work. Unlike other systems, the lever does not engage automatically – you must keep it pressed at all times. If you release it, the drive stops immediately. Make sure the battery is properly inserted before performing this test.

If the motor runs but the drive does not engage, adjust the Bowden cable. Over time, the Bowden cable of the drive naturally stretches. To tighten it: first, cut off the power and remove the batteries. Locate the adjustment element (17/1) on the Bowden cable (17/2). Turn this element counterclockwise until the cable is taut between the clutch lever and the holding point. Go gradually, without forcing.

Test the Bowden cable adjustment by reinserting the battery, starting the motor, and trying to activate the wheel drive. If the cable is properly tightened, the drive should respond to pressure on the clutch lever. If the drive still does not work, repeat the Bowden cable adjustment until proper operation is achieved.

Check the overall integrity of the system. Before each use, check that all nuts, bolts, and screws of the drive mechanism are tight. A loose fastening can prevent the system from functioning properly.

Use the speeds correctly. Once the drive is activated by pressing the clutch lever, you have 7 adjustable speed levels via the Plus and Minus buttons on the cockpit. Start with level 1 for more control.

If after these checks the wheel drive still does not work, the system requires professional intervention. Contact AL-KO customer service or an authorized service center – do not attempt to repair the drive system yourself.

Question 2

How do I remove the blade from the AL-KO Tech 140 mower?

Accepted Answer

To remove the blade from your AL-KO Tech 140 mower, follow these safety and maintenance steps:

Steps to remove the blade:

Completely stop the engine and ensure it is cool to avoid any risk of burns.
Disconnect the spark plug wire to prevent accidental starting during the operation.
Carefully turn the mower over, protecting the blade and the housing, to easily access the blade attachment.
Locate the central bolt that secures the blade to the cutting deck.
Use an appropriate wrench (usually a socket wrench) to unscrew this bolt by turning it counterclockwise.
If the bolt is difficult to unscrew, apply a penetrating oil (like WD-40) and let it sit for a few minutes before trying again.
Remove the blade while wearing protective gloves to avoid cuts.

Additional tips:

Never excessively force the bolt to avoid damaging the attachment.
Take the opportunity to clean the blade and check its condition before reinstalling or replacing it.
When reassembling, tighten the bolt well but without over-tightening.

This procedure ensures safe and effective maintenance of the blade of your AL-KO Tech 140 mower.

Question 3

Why does the AL-KO Tech 120 OHV mower turn off as soon as I release the throttle bar?

Accepted Answer

This behavior is completely normal and intentional on the AL-KO Tech 120 OHV mower. The engine stops when you release the safety bar, which is the main control and safety device of the machine. It is not really a throttle bar issue, but a very important safety system integrated into the mower.

The safety bar must be pulled towards the upper handle and held continuously during the operation of the mower. Contrary to what one might expect, the bar does not engage automatically or lock. You must actively hold it with your hand on the rear handle. As soon as you release this bar, the engine immediately cuts off. This is an essential safety mechanism that stops the mower in case of a fall, loss of balance, or if you accidentally let go.

The operation differs slightly depending on whether your mower is equipped with a blade attachment (an option available on this model). If your mower does not have a blade attachment, releasing the bar stops both the engine and the blade. If it is equipped with a blade attachment, releasing the bar only stops the blade while the engine continues to run, allowing you to control both independently.

To use the mower correctly, firmly hold the safety bar against the upper handle while mowing. Set the speed lever (which controls the engine speed) to a mid-position after starting. If you need to temporarily stop the mower, simply release the bar. For a complete stop, raise the speed lever to the stop position, then release the safety bar.

This safety system is mandatory and cannot be modified or bypassed. Therefore, it is not a setting that could be adjusted, but the normal and safe operation of the product. If you find it difficult to hold the bar continuously, this is a normal feeling during the first use. The engine is designed to remain active only if you maintain control of the machine.

Question 4

Where is the primer button (primerknopf) located on the AL-KO Classic 4.62 P-A lawn mower?

Accepted Answer

The primer button primerknopf on the AL-KO Classic 4.62 P-A lawn mower is located on the engine, as shown in illustration 16 of the user manual. It is a small rubber button situated near the carburetor and the engine cover.

Starting procedure with priming:

Press the primer button 3 times at intervals of about 2 seconds before starting the engine.
If the outside temperature is below 10 °C, press the button 5 times instead of 3.
This operation sends fuel into the fuel system and makes it easier to start the engine when cold.

Important: Never use the primer button when the engine is hot or already at temperature. Only use the primerknopf for cold starts.

Once primed, pull the safety brake handle towards the chassis to prepare the engine for starting. The engine should then start more easily due to the presence of fuel in the fuel circuit.

Question 5

Where is the oil filter located on the AL-KO Classic 4.62 P-A lawn mower?

Accepted Answer

The AL-KO Classic 4.62 P-A lawn mower does not have a separate oil filter like those found on some more powerful engines. This model is equipped with a compact 4-stroke engine designed for this type of gardening equipment, which does not include a dedicated oil filter.

The only access to the engine oil is through the oil filler cap, which you will find on the engine. You can easily identify it by looking for a cap with an oil symbol or by consulting the diagrams in the user manual provided with your lawn mower.

Oil Filling: To check or top up the oil level, unscrew the oil filler cap, insert a funnel, and pour in the appropriate engine oil (the recommended type can be found in the user manual).

Oil Change: To replace the engine oil, prepare a container to collect the used oil, then let the oil drain completely through the oil filler opening or suction it out. After draining, securely close the cap and pour in new oil through the same opening.

Regular maintenance of the engine oil is essential to prolong the engine's lifespan. Please refer to your lawn mower's user manual for recommended intervals for checking and replacing the oil.

Question 6

What is the engine oil capacity of the crankcase for the AL-KO Pro 125 OHV QSS mower?

Accepted Answer

The engine oil capacity of the crankcase for the AL-KO Pro 125 OHV QSS mower is generally about 0.6 liters (600 ml). It is important to fill the crankcase with the recommended amount of engine oil to ensure proper operation and a long engine life.

Here are some tips for oil draining and filling:

Use engine oil suitable for 4-stroke engines, complying with the specifications recommended by the manufacturer.
Check the oil level with the dipstick before each use.
Do not exceed the maximum capacity indicated to avoid leaks or damage.
Change the oil regularly according to the manufacturer's recommendations, usually after the first 5 hours of use and then every 25 to 50 hours.

Following these recommendations ensures optimal performance and better protection for your AL-KO Pro 125 OHV QSS mower's engine.

Question 7

How does the transmission system of the AL-KO Highline 51.6 SPB Plus work and where should the tension spring be installed?

Accepted Answer

The AL-KO Highline 51.6 SPB Plus is equipped with an automatic transmission system designed to propel the mower forward effortlessly. This system operates via mechanical drive using a Bowden cable connected to a control bar located on the handlebar. Thanks to this ingenious system, you can easily control the traction of the drive wheels, allowing for smooth and gradual movement of the mower across your lawn.

The transmission mechanism includes a control bar that you press upwards against the top of the handlebar to activate the drive of the wheels. A return spring ensures that the bar automatically returns to the resting position when you release your grip, which deactivates the transmission. This Bowden cable system offers precise control of traction, with a progressive engagement that facilitates maneuvering the mower over different terrains.

Regarding the installation of the tension spring, the main spring of the transmission system (Bowden cable return spring) is attached between the clutch mechanism of the transmission and the control bar of the handle. This tension spring should be hooked on one side to an anchor point on the chassis or transmission system, usually located near the drive wheel or transmission housing, and on the other side to the control bar or an associated return lever.

The correct placement of the spring is essential for the proper functioning of the transmission. Ensure that the spring is evenly tensioned without being over-twisted, in order to maintain a constant return force. If the spring is mispositioned, too loose, or stuck, the transmission system will not operate correctly and the bar may not return properly to the resting position. Regularly check the condition of the spring; if it is rusty, damaged, or weakened, it should be replaced to ensure optimal operation.

Note that the AL-KO Highline 51.6 SPB Plus can also be equipped with a deflector flap rotary spring that is distinct from the transmission spring. This flap spring ensures that the deflector flap remains pressed against the mower housing during mowing without a grass catcher, so that the cut grass is ejected downwards and backwards. This spring is installed by rotating around the flap's pivot point and is factory preset.

In case of a problem with the wheel transmission (inability to activate or deactivate traction), you may need to adjust the Bowden cable using the adjustment device located on the cable. If the spring turns out to be defective or no longer returns the bar to the resting position, refer to the assembly guide provided with your mower or contact an authorized service center for proper replacement.

Question 8

Do I need to remove a part to use the grass collector on the AL-KO Classic 4.66 PA mower?

Accepted Answer

To use the grass collector on the AL-KO Classic 4.66 PA mower, it is generally not necessary to remove a specific part from the mower. Here are the steps to follow:

Check that the grass collector is compatible and in good condition.
Ensure that the mower is turned off and unplugged (if electric) for your safety.
Position the grass collector at the back of the mower, inserting it correctly into the designated supports.
Make sure that the cutting deck is not obstructed and that the outlet to the collector is clear.
No parts need to be removed to install the collector, but it is important to check that the blades and cutting mechanism are clean and in good condition for effective collection.

If you have difficulty attaching the collector or have any doubts, it may be helpful to check that the collector is well-suited for the Classic 4.66 PA model.

Question 9

How to locate and access the air filter on the AL-KO Highline 525 SPA lawn mower?

Accepted Answer

To locate and access the air filter of your AL-KO Highline 525 SPA lawn mower, follow these simple steps:

1. Safety first

Ensure that the mower is turned off and the ignition key is removed to prevent any accidental starting.

2. Open the engine cover

Locate the screws or clips that hold the engine cover in place, usually found on the sides or at the back.
Use a screwdriver or appropriate wrench to remove these fasteners.
Lift or remove the cover to access the engine.

3. Identify the air filter

The air filter is located near the engine, often in a plastic housing.
This housing may be secured with clips or screws.

4. Remove and maintain the filter

Detach the clips or unscrew the housing to extract the filter.
Clean the filter if it is reusable or replace it if it is worn or damaged.

5. Reassemble the mower

Once the filter is cleaned or replaced, put the housing back in place, secure the clips or screws, and then close the engine cover, ensuring everything is properly secured.

This operation helps ensure the proper functioning of the engine and better performance of your mower.

Question 10

How to find and use the download button for the AL-KO Highline 473 SPE manual?

Accepted Answer

The manual for the AL-KO Highline 473 SPE is available for download directly from this page. The download button is located at the top left of the page, identified by the icon "⬇" accompanied by the text "Download".

Steps to download the manual:

Locate the "⬇ Download" button at the top of the page, next to the viewing options and AI questions
Click directly on this button to start downloading the PDF file
The file will automatically save in your downloads folder

The manual is provided in a complete PDF format of 344 pages in French, containing the original user manual from the manufacturer AL-KO with all technical details, safety instructions, and maintenance procedures for your Highline 473 SPE lawn mower.

If the document opens in your browser instead of downloading directly, right-click on the page and select "Save as" to save the file to your computer. You can also access the manual in other languages (more than 25 available) by contacting the service via the form provided on the page.

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