Q: How to change the oil on the ALPINA AL4 46 lawn mower?

The manual for your ALPINA AL4 46 lawn mower recommends periodically replacing the engine oil for the proper functioning of the machine. Here’s what you need to know: Where to find the oil change information The ALPINA AL4 46 document does not contain the detailed oil change procedure. The precise steps, the recommended oil type, and the engine crankcase capacity are specified in the engine manual provided separately with your mower. Before you start Make sure the engine has completely cooled down Refer to the engine manual of your ALPINA AL4 46 for the exact specifications Strictly follow the recommendations regarding the type and viscosity of oil In general, gasoline mowers like this one require an oil change every 50 to 100 hours of operation. The provided engine manual will include detailed steps and access points to perform this operation safely.

Question 1

How to unscrew the oil cap on the ALPINA AL4 46 lawn mower?

Accepted Answer

To unscrew the oil cap of your ALPINA AL4 46 lawn mower, you must first ensure that the engine is completely stopped and cooled down. Wait at least 5 to 10 minutes after stopping the engine before handling the oil cap, as the engine heats up significantly during mowing and contact could cause burns.

The oil cap is located on the top of the engine, usually visible on the side of the engine block. You can identify it by the symbol of an oil drop engraved on it. Before any handling, consult the user manual of your engine, as ALPINA AL4 46 models may be equipped with different types of engines depending on the version (Briggs & Stratton, Kohler, or others).

To properly access the cap:

Place the mower on a flat and stable surface
Ensure that the cutting mechanism is completely immobilized
Locate the oil cap at the top of the engine block
Clean the area around the cap with a dry cloth to prevent debris from falling into the crankcase
Turn the cap by hand, counterclockwise (left) to unscrew it

In most cases, the cap can be unscrewed by hand only, without specific tools. If the cap is too tight, you can use a cloth or an adjustable wrench (consulting the engine manual is recommended). Once the cap is removed, clean it before replacing it to avoid any residue buildup.

After checking or changing the engine oil, screw the cap back on by turning it by hand clockwise (right) until it is tight. Consult your engine's user manual for the exact viscosity specifications (SAE 30 or 10W-30 depending on weather conditions) and always check the oil level before each use by pushing the dipstick down to the maximum mark.

Question 2

Where to order the mulching plug for the ALPINA BL 510 SQE ST 170 LS and what is its shape?

Accepted Answer

The mulching plug for the ALPINA BL 510 SQE ST 170 LS is officially called deflector cap or mulching cap. Its role is to close the rear ejection opening to redirect finely cut grass back to the blade, which transforms it into mulch deposited directly on the ground instead of collecting it in the basket.

Shape and installation of the deflector cap: The cap has a flat and slightly curved shape, designed to fit precisely into the rear ejection opening. It is secured by two axes that clip into the designated holes, creating an airtight barrier. To install it, lift the rear ejection guard, insert the cap slightly tilted to the right, then guide the two axes into the holes until you hear the safety click.

Where to order this part:

Webmotoculture.fr - Offers the compatible GGP/Alpina mulching cap (reference 322140244/1) at a price of around €19.90
Jardin-Affaires.com - Also distributes the mulching cap for GGP and Alpina mowers
Authorized Alpina dealers - Contact your local dealer who can order directly from the Alpina distributor
Amazon.fr - Some compatible Alpina accessories are available on the platform

Important information for your order: Be sure to mention the complete model BL 510 SQE ST 170 LS as well as the reference of the mulching cap 322140244/1. This mower is compatible with GGP/Alpina/Stiga accessories of the same generation. You can also consult your original manual which contains the serial number of your machine, useful for confirming compatibility with the dealer.

To remember: There is also a side ejection deflector (reference 322108309/1) if your model has this function. Make sure your mower is indeed equipped for mulching before investing in this kit. The rear ejection guard should never be removed without being replaced by the mulching cap for safety reasons.

Question 3

How to change the oil on the ALPINA AL4 46 lawn mower?

Accepted Answer

The manual for your ALPINA AL4 46 lawn mower recommends periodically replacing the engine oil for the proper functioning of the machine. Here’s what you need to know:

Where to find the oil change information

The ALPINA AL4 46 document does not contain the detailed oil change procedure. The precise steps, the recommended oil type, and the engine crankcase capacity are specified in the engine manual provided separately with your mower.

Before you start

Make sure the engine has completely cooled down
Refer to the engine manual of your ALPINA AL4 46 for the exact specifications
Strictly follow the recommendations regarding the type and viscosity of oil

In general, gasoline mowers like this one require an oil change every 50 to 100 hours of operation. The provided engine manual will include detailed steps and access points to perform this operation safely.

Question 4

What type of fuel to use for the ALPINA BL 460 S ST 140 lawn mower?

Accepted Answer

For the ALPINA BL 460 S ST 140 lawn mower, it is important to use suitable fuel to ensure optimal operation and longevity of the engine.

Recommended fuel type

Unleaded gasoline: Use regular unleaded gasoline with an octane rating of at least 87 (RON).
Ethanol content: Avoid fuels containing more than 10% ethanol (E10 or less is acceptable), as a higher percentage can damage the engine and fuel system components.

Additional tips

Do not use gasoline containing lead or non-recommended additives.
Store fuel in a clean, airtight container to avoid contamination.
Use fresh fuel to prevent issues related to aged gasoline.

Following these recommendations will ensure easy starting, optimal performance, and extended life of your ALPINA BL 460 S ST 140 lawn mower.

Question 5

Why won't my ALPINA AL4 46 lawn mower start and how can I resolve this issue?

Accepted Answer

If your ALPINA AL4 46 lawn mower won't start, several simple checks can help resolve the issue. Start by following the correct starting procedure outlined in chapter 6.3 of the manual: for models with a manual start handle, firmly hold the engine brake lever in the pulled position to prevent the engine from stopping during startup. For models with electric button start, ensure that the battery is properly inserted into its compartment on the engine.

Check the fuel and engine oil. The mower is delivered without fuel or oil. Before each use, check the levels of gasoline and engine oil (see chapters 7.2.1 and 7.2.2 of the manual). Fuel is perishable and should not remain in the tank for more than 30 days. If the fuel is old, completely empty the tank and refill it with fresh gasoline. Refueling should be done with the machine turned off and the spark plug cap removed. Pour the fuel using a funnel, only outdoors, while maintaining a safety distance of 3 meters from the refueling area.

Inspect the spark plug. A dirty or improperly gapped spark plug can prevent starting. Refer to the engine manual provided with your mower to locate the spark plug, remove it, and inspect it. If it is dirty, clean it with a soft wire brush. If it is damaged or very worn, replace it. Before working on the spark plug, ensure that the engine has cooled down and that the spark plug cap is removed.

Check the air filter. A clogged air filter reduces the airflow necessary for combustion and prevents starting. Refer to the engine manual to locate and access the air filter. Clean it if possible or replace it if it is too dirty.

If the engine is flooded, meaning you have pulled the start handle several times with the choke engaged, replace the spark plug cap and try to restart the engine. The engine can also be flooded if you have repeatedly pulled the start handle with the spark plug cap removed: in this case, refer to the engine manual for specific un-flooding procedures.

Safety items to check. Before starting, ensure that all discharge protection equipment is properly installed (side or rear discharge protection depending on your model). The engine must always be started with the traction disengaged.

If after applying all these solutions the problem persists, it may be a carburation issue or a engine failure requiring specialized intervention. Contact the seller or an authorized service center for a thorough diagnosis.

Question 6

What type of fuel should be used for the ALPINA AL5 51 SAQ lawn mower?

Accepted Answer

For the ALPINA AL5 51 SAQ lawn mower, it is important to use suitable fuel to ensure optimal operation and preserve the longevity of the engine.

Recommended fuel type

Use unleaded gasoline with an octane rating (RON) of at least 87.
Avoid fuels containing more than 10% ethanol (E10), as a higher percentage can damage the engine and fuel system components.

Usage tips

Always use fresh fuel, avoid gasoline that has been stored for more than 30 days.
Do not mix oil with gasoline unless the mower is a 2-stroke model (which is generally not the case for this model).
After each season, empty the tank or add a fuel stabilizer to prevent deposit formation.

By following these recommendations, you ensure efficient operation and better durability of your ALPINA AL5 51 SAQ mower.

Question 7

What is the oil tank capacity of the ALPINA AL5 51 SAQ lawn mower?

Accepted Answer

The oil tank capacity of the ALPINA AL5 51 SAQ lawn mower is approximately 0.6 liters. It is important to maintain the proper oil level to ensure the proper functioning and longevity of your mower's engine.

Here are some tips for managing the oil tank:

Regularly check the oil level before each use.
Use the type of oil recommended by the manufacturer.
Do not overfill the tank to avoid any overflow.
Change the oil according to the indicated intervals to maintain engine performance.

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