Q: How to unlock the stuck blade screw on the VIKING ME 545 V and what is the direction of rotation?

Materials and preparation: Always unplug the device and let the motor cool down Wear protective gloves at all times Use a 24 mm flat wrench (specific tool provided or accessory) Prepare a wooden wedge of 60 × 60 mm to immobilize the blade during the operation Unlocking and unscrewing: Place the wooden wedge perpendicularly under the blade to keep it completely still Insert the 24 mm flat wrench into the blade screw head Unscrew by turning counterclockwise (standard unscrewing direction) If the screw refuses to budge, apply a penetrating oil (like WD-40) and let it sit for 15 to 30 minutes before trying again Unscrew gradually without forcing to avoid damaging the screw Reassembly and correct tightening: Clean the blade and inspect it to ensure it is not cracked or worn (minimum thickness: 2 mm) Mount the blade with the ventilation fins facing upwards Reinsert the wooden wedge to immobilize the blade Re-screw the screw by turning clockwise Tighten to a torque of 10 to 15 Nm exactly (crucial for safety and fastening) Do not use a lower or higher torque, which could cause the blade to unlock while rotating Important: The tightening torque of 10 to 15 Nm is crucial for the correct fastening of the cutting tool. It is recommended to use a torque wrench to precisely adhere to this specification.

Q: What type of engine oil to use for the VIKING MB 448 TX mower?

4-stroke engine oil : The VIKING MB 448 TX mower is equipped with a Briggs & Stratton 4-stroke engine (series 675, 190 cm³). It uses SAE 30 mineral engine oil for warm climates, or SAE 10W-30 for year-round use. The oil sump capacity is approximately 0.6 liters (refer to the engine manual provided to confirm the exact amount). Checking the oil level : This is the most important maintenance task. Before each use or every 5 hours of operation: place the mower on a perfectly horizontal surface, wait 2 to 3 minutes for the oil to settle at the bottom of the engine, then fully screw in the dipstick. Remove it and observe the reference mark or hashed area. The level should be between the minimum and maximum indicated on the dipstick. If it is insufficient, fill with the recommended oil up to the maximum mark. Oil change : Follow the maintenance interval indicated in the Briggs & Stratton engine manual provided with your mower (usually every 50 to 100 hours of operation depending on the model). To change the oil: with the engine warm, unscrew the cap or oil filter, let the old oil drain into a suitable container, then fill with new oil of the same type. Never pour more than the maximum level. Important : Only use high-quality oils certified for 4-stroke engines. Inappropriate oil will prematurely damage the engine. Remember that at the first start of the season, you must absolutely pour new oil into the engine before starting it (see the 'Commissioning' section of the manual).

Q: How to start the VIKING MB 2 RT lawn mower

To start the VIKING MB 2 RT lawn mower: Press and hold the engine stop bar against the handle. Slowly pull the starter cable until you feel resistance. With a quick motion, pull the starter cable. Once the engine is running, keep the safety bar pressed down to keep the engine running. If you release the bar, the engine will stop automatically within a maximum of 3 seconds. Important tip: Before each use, check the oil level of the 4-stroke engine and use unleaded gasoline for optimal operation.

Q: What does the error message "deksel feil" mean on my iMow MI 422 P?

The error message "deksel feil" (cover error) indicates a problem with the sensor or the cover of the base station or the iMow MI 422 P robotic mower. Possible causes: Cover not closed properly - Check that the cover of the base station or compartment is completely closed and properly in place. The device detects an opening or incorrect positioning. Damaged or deformed cover - If the cover is broken, cracked, or warped, it may prevent proper contact with the sensor. Inspect it visually. Faulty sensor or switch - The cover sensor may be dirty, wet, or defective. Gently clean the contact surfaces with a dry cloth. Electrical connection issue - Ensure that all internal connectors are securely plugged in and not corroded. Solutions: Completely close the cover and check that it clicks into place correctly. Clean the sensor and its contact surfaces. If the error persists after properly closing the cover, the sensor or cover may need to be replaced.

Q: What type and how much oil should be used for the VIKING MB 545 VS mower?

The VIKING MB 545 VS mower is equipped with a Briggs & Stratton Series 675 engine (4-stroke, 190 cm³). For the maintenance of this engine, you should use: Type of oil: High-quality mineral engine oil for 4-stroke engines Recommended SAE viscosity: SAE 30 for standard use, or SAE 10W-30 for use in cold weather Filling quantity: approximately 0.6 liters (600 ml) Before the first start , it is important to completely fill the engine oil reservoir using a suitable funnel to avoid spills. The engine should never run without oil, which could cause irreversible damage. To check the oil level regularly : Place the mower on a flat and horizontal surface Unscrew the oil reservoir cap (located on the engine) Check the level by observing the dipstick or by wiping the probe with a clean cloth The level should be between the minimum and maximum (do not exceed or go below) Re-screw the cap properly before restarting the engine Oil change: Follow the maintenance intervals indicated in the Briggs & Stratton engine manual provided with your mower. Generally, an oil change is recommended after the first 50 hours of operation, then every 50-100 hours depending on usage conditions.

Question 1

What type of gasoline should be used for the VIKING MB 2 RC mower?

Accepted Answer

The VIKING MB 2 RC mower operates exclusively with fresh branded unleaded gasoline. The Kohler XT675 4-stroke engine is designed to use only this type of fuel. Old, contaminated, or poor-quality gasoline will damage the engine and significantly reduce cutting performance.

The fuel tank of the MB 2 RC has a capacity of 1.4 liters. When filling, do not completely fill the tank: leave about 4 cm of space below the neck edge. This space is essential to allow the fuel to expand during engine operation without overflowing.

For the choice of brand and quality of gasoline, refer to the Kohler engine manual provided with the mower for the recommended octane rating. Always use recently purchased gasoline, not fuel that has been stored for a long time, as it oxidizes and loses its properties.

Essential precautions when filling: perform this operation outdoors, with the engine off and cooled, and without smoking. Never remove the tank cap when the engine is running or hot. Never store the mower with fuel in the tank inside a building, as gasoline vapors pose a fire risk.

Question 2

How to correctly reattach the blade after sharpening on the VIKING ME 545 V?

Accepted Answer

After sharpening your rotary blade, reassembly must follow a precise and secure procedure to ensure the proper functioning of your VIKING ME 545 V mower.

Safety equipment and preparation: Start by wearing mandatory protective gloves, as the sharpened blade poses serious injury risks. Prepare a wooden block of approximately 60 x 60 mm to hold the blade during assembly.

Positioning the blade: Mount the blade by ensuring that the ventilation fins (the raised parts) are facing upwards. This orientation is essential for the aerodynamic functioning of the device.

Holding and fastening: Use the wooden block to hold the blade in position while you tighten the central screw. With a 24 mm wrench, tighten the blade fastening screw while strictly adhering to a torque of 10 to 15 Nm (Newton-meters). Do not over-tighten to avoid damaging the thread; do not under-tighten to prevent the blade from loosening during operation.

Replacement of fastening elements: The VIKING manual recommends systematically replacing the blade fastening elements (screws and stop washer) during each reassembly, as sharpening and disassembly can damage them. These spare parts are available from authorized VIKING dealers.

Final check: After reassembly, check that the blade rotates freely without rubbing or abnormal vibration. If you notice excessive vibration or rubbing after reassembly, stop the device immediately and check that the torque is correct and that the blade has not been damaged during sharpening.

Question 3

How to unlock the stuck blade screw on the VIKING ME 545 V and what is the direction of rotation?

Accepted Answer

Materials and preparation:

Always unplug the device and let the motor cool down
Wear protective gloves at all times
Use a 24 mm flat wrench (specific tool provided or accessory)
Prepare a wooden wedge of 60 × 60 mm to immobilize the blade during the operation

Unlocking and unscrewing:

Place the wooden wedge perpendicularly under the blade to keep it completely still
Insert the 24 mm flat wrench into the blade screw head
Unscrew by turning counterclockwise (standard unscrewing direction)
If the screw refuses to budge, apply a penetrating oil (like WD-40) and let it sit for 15 to 30 minutes before trying again
Unscrew gradually without forcing to avoid damaging the screw

Reassembly and correct tightening:

Clean the blade and inspect it to ensure it is not cracked or worn (minimum thickness: 2 mm)
Mount the blade with the ventilation fins facing upwards
Reinsert the wooden wedge to immobilize the blade
Re-screw the screw by turning clockwise
Tighten to a torque of 10 to 15 Nm exactly (crucial for safety and fastening)
Do not use a lower or higher torque, which could cause the blade to unlock while rotating

Important: The tightening torque of 10 to 15 Nm is crucial for the correct fastening of the cutting tool. It is recommended to use a torque wrench to precisely adhere to this specification.

Question 4

What type of engine oil to use for the VIKING MB 448 TX mower?

Accepted Answer

4-stroke engine oil: The VIKING MB 448 TX mower is equipped with a Briggs & Stratton 4-stroke engine (series 675, 190 cm³). It uses SAE 30 mineral engine oil for warm climates, or SAE 10W-30 for year-round use. The oil sump capacity is approximately 0.6 liters (refer to the engine manual provided to confirm the exact amount).

Checking the oil level: This is the most important maintenance task. Before each use or every 5 hours of operation: place the mower on a perfectly horizontal surface, wait 2 to 3 minutes for the oil to settle at the bottom of the engine, then fully screw in the dipstick. Remove it and observe the reference mark or hashed area. The level should be between the minimum and maximum indicated on the dipstick. If it is insufficient, fill with the recommended oil up to the maximum mark.

Oil change: Follow the maintenance interval indicated in the Briggs & Stratton engine manual provided with your mower (usually every 50 to 100 hours of operation depending on the model). To change the oil: with the engine warm, unscrew the cap or oil filter, let the old oil drain into a suitable container, then fill with new oil of the same type. Never pour more than the maximum level.

Important: Only use high-quality oils certified for 4-stroke engines. Inappropriate oil will prematurely damage the engine. Remember that at the first start of the season, you must absolutely pour new oil into the engine before starting it (see the 'Commissioning' section of the manual).

Question 5

How to start the VIKING MB 2 RT lawn mower

Accepted Answer

To start the VIKING MB 2 RT lawn mower:

Press and hold the engine stop bar against the handle.
Slowly pull the starter cable until you feel resistance.
With a quick motion, pull the starter cable.

Once the engine is running, keep the safety bar pressed down to keep the engine running. If you release the bar, the engine will stop automatically within a maximum of 3 seconds.

Important tip: Before each use, check the oil level of the 4-stroke engine and use unleaded gasoline for optimal operation.

Question 6

How to replace the cutting blade of the VIKING iMow MI 422 P?

Accepted Answer

Replacing the cutting blade of the VIKING iMow MI 422 P is a simple maintenance operation that should be performed approximately every 200 hours of operation.

Replacement Steps

Lock the robot - Turn off the device and ensure it cannot be restarted
Turn the robot over - Place it on its back to access the cutting system
Unscrew the central screw - It holds the blade in place
Remove the old blade and install the new one
Tighten the screw by hand - Tighten firmly but without excessive force
Record the replacement - In the robot's Service menu, select "Blade Replacement" to confirm the intervention

Safety: Always wear thick protective gloves when handling the blade. It is a double-sided steel blade, very sharp.

For complete professional service, you can contact an authorized VIKING dealer who will offer the recommended annual maintenance.

Question 7

The pages of the manual are numbered differently depending on the language (German, English, French). How can I find the equivalent page in English if I have a page reference in German?

Accepted Answer

The manual for the VIKING iMow MI 422 P is available in several languages (French, German, English, Italian, and Dutch). The pages are numbered differently for each language version, as the content does not occupy the same number of pages depending on the language.

To find the equivalent page in English from a page in German:

Locate the German page number you are looking for (example: page 23)
Click on the English flag (EN) at the top of the PDF reader to switch to the English version
Look for the same content or section rather than the identical page number
If you know the title of the section (e.g., "Maintenance", "Troubleshooting"), use the Reader Search function to quickly locate it in the English version

The integrated PDF reader allows you to switch from one language to another instantly via the flag selectors. Page numbers vary by language, but the content is identical.

Question 8

What does the error message "deksel feil" mean on my iMow MI 422 P?

Accepted Answer

The error message "deksel feil" (cover error) indicates a problem with the sensor or the cover of the base station or the iMow MI 422 P robotic mower.

Possible causes:

Cover not closed properly - Check that the cover of the base station or compartment is completely closed and properly in place. The device detects an opening or incorrect positioning.
Damaged or deformed cover - If the cover is broken, cracked, or warped, it may prevent proper contact with the sensor. Inspect it visually.
Faulty sensor or switch - The cover sensor may be dirty, wet, or defective. Gently clean the contact surfaces with a dry cloth.
Electrical connection issue - Ensure that all internal connectors are securely plugged in and not corroded.

Solutions:

Completely close the cover and check that it clicks into place correctly.
Clean the sensor and its contact surfaces.
If the error persists after properly closing the cover, the sensor or cover may need to be replaced.

Question 9

What type and how much oil should be used for the VIKING MB 545 VS mower?

Accepted Answer

The VIKING MB 545 VS mower is equipped with a Briggs & Stratton Series 675 engine (4-stroke, 190 cm³). For the maintenance of this engine, you should use:

Type of oil: High-quality mineral engine oil for 4-stroke engines
Recommended SAE viscosity: SAE 30 for standard use, or SAE 10W-30 for use in cold weather
Filling quantity: approximately 0.6 liters (600 ml)

Before the first start, it is important to completely fill the engine oil reservoir using a suitable funnel to avoid spills. The engine should never run without oil, which could cause irreversible damage.

To check the oil level regularly:

Place the mower on a flat and horizontal surface
Unscrew the oil reservoir cap (located on the engine)
Check the level by observing the dipstick or by wiping the probe with a clean cloth
The level should be between the minimum and maximum (do not exceed or go below)
Re-screw the cap properly before restarting the engine

Oil change: Follow the maintenance intervals indicated in the Briggs & Stratton engine manual provided with your mower. Generally, an oil change is recommended after the first 50 hours of operation, then every 50-100 hours depending on usage conditions.

Question 10

Why won't my VIKING MB 650 T lawn mower start and how can I restart it?

Accepted Answer

The VIKING MB 650 T lawn mower with a Briggs & Stratton engine (4-stroke) usually doesn't start for one of these reasons. Here’s how to diagnose and resolve the issue step by step.

Start with the essential checks: First, place the mower on a flat surface and check that the engine stop lever is pressed against the handlebar. This is a mandatory condition for starting. Next, check the fuel tank: it should contain fresh unleaded gasoline. Only use quality and recent fuel, as aged or poor-quality gasoline (stored for more than 3-4 weeks) prevents starting. If the fuel line is clogged, clean it.

Inspect the air filter and spark plug: A dirty air filter blocks the airflow necessary for the air-fuel mixture. Refer to the maintenance manual to clean or replace it. For the spark plug, first disconnect the spark plug terminal (the connection wire). Ensure that the connection is securely plugged in. If the spark plug is black with deposits or damaged, replace it.

Correct starting with the cord: The MB 650 T has an automatic fixed throttle setting, you do not need to adjust the throttle. Pull the starting cable slowly until you feel resistance, then make a sharp and vigorous pull of about one meter. Gradually release so that the cable rewinds. Repeat this action until the engine starts. Never work in very tall grass and do not use the lowest cutting setting, as these conditions make starting difficult.

Case of a flooded engine: If you have pulled many times without success, the engine is likely flooded. Unscrew the spark plug and let it dry for a few minutes. With the spark plug still removed, pull the starting cable several times to expel excess gasoline from the cylinders. Then replace the spark plug and try again.

Additional checks: Ensure that the engine housing and cooling grills are not blocked. Clean them if necessary (first disconnect the spark plug terminal). Also, check that the fuel line is not detached or pinched. If the mower has been stored for a long time with fuel, empty the tank, clean the tank, fuel line, and carburetor with fresh fuel.

If after these checks the engine still refuses to start, consult a VIKING specialized dealer for a check of the ignition system and fuel injection. Do not excessively force the cable to avoid damage.

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