Q: What should I do if the height adjustment lever does not stay in position?

On the STERWINS PLM2-46B150 lawn mower, the height adjustment lever (item 6) must remain locked in one of the 7 predefined positions (from 25 to 75 mm). If the lever does not stay in place and moves up or down by itself, it is usually due to loosening of the mechanical elements that hold it in place. Checks and solutions: Tighten all nuts and screws - The manual recommends checking that "all nuts and screws are properly tightened" before any use. Start by tightening the locking screw of the lever and all connections near the adjustment bar (item 65) and the adjustment plate (item 62). Check the condition of the torsion springs - The locking mechanism uses torsion springs (item 66). A worn, broken, or misaligned spring would prevent the lever from locking. Inspect them visually. Work on flat ground, engine off - For any adjustment or diagnosis, place the mower on perfectly flat ground and ensure that the engine is completely off and cold. If tightening the screws and checking the springs do not resolve the issue, an internal component (broken spring, worn stop notch) may need replacement. In this case, consult an authorized STERWINS repairer.

Q: What type of oil and how much for the STERWINS PLM2-46B150 mower?

Oil tank capacity: 470 cm³ (approximately 0.5 liters). Recommended oil type: Use engine oil grade SAE 30 or 10W-30 . The engine is a 4-stroke, and the oil is poured directly into the designated oil fill cap. Checking the oil level: Check the level before each use using the built-in oil gauge The engine must be cold and the mower on a flat surface Top up if necessary with fresh oil of the same grade Seasonal maintenance: Before winter storage: drain the hot oil from the engine and replace it with fresh oil After each use: apply a light coat of machine oil on the blade to protect it from corrosion

Q: What does the traction cable of the STERWINS PLM2-46B150 lawn mower look like?

The traction cable of the STERWINS PLM2-46B150 lawn mower is the cable that controls the mower's forward movement. It is different from the starter cable that starts the engine. This cable connects the traction control lever, located on the upper bar of the handle, to the mower's transmission system. Appearance and structure: The traction cable is a flexible element made of a metal wire wrapped inside a protective plastic or rubber sheath. It looks like a thin but strong rope, designed to withstand repeated stresses during use. One end of the cable attaches to the traction control handle (lever on the handlebar), while the other end connects to the wheel drive mechanism. Role and operation: By pulling the traction control handle towards you, you tension this cable, which gradually engages the drive belt and allows the mower to move forward. The cable remains under tension as long as you keep the handle pulled. Adjustment and maintenance: The traction cable is equipped with an adjustment screw that allows you to adjust its tension. If the cable is too loose, the mower will not move forward when you pull the handle. If it is too tight, the mower will move forward without you having to pull the handle. Proper adjustment is essential for optimal operation. Before each use, check that the cable does not have any kinks, twists, or damage, and ensure that it is neither too loose nor too tight. If you need to adjust it, use the dedicated adjustment screw for this purpose.

Question 1

How to adjust or control the tension of the drive belt of the STERWINS PLM2-46B150 lawn mower?

Accepted Answer

Although the official manual for the STERWINS PLM2-46B150 lawn mower states that any malfunction of the belt (part 10 of the exploded view) should be repaired by an authorized service center, you can perform a regular check of the condition and tension of this drive belt to extend its lifespan and maintain optimal traction.

How to check the belt tension: Locate the drive belt that connects the engine to the traction box. Press firmly in the center of the belt with your finger (engine off): it should flex about 3 to 5 mm under pressure. If the belt remains rigid or flexes excessively (more than 15 mm), this indicates a tension problem requiring intervention.

Signs of a worn or damaged belt: A problematic belt manifests as insufficient traction (the mower does not move forward or moves in jerks), squeaking or unusual noises, a burning smell, or a visibly cracked, frayed, or dusty belt. Do not confuse this with a problem with the traction control cable (located on the handlebar) which can also cause traction failure.

Preventive maintenance: Regularly inspect the belt before each mowing season and after prolonged use. Ensure that the belt guard (part 14 of the exploded view) remains clean and intact. Clean grass debris around the belt, as accumulation can reduce traction efficiency. A new belt stretches slightly during the first hours of use: readjustment may be necessary after the first 5 mowings.

What to do in case of a problem: If you notice that the tension is abnormal, that the belt is visibly damaged, or that traction is failing despite a properly adjusted control cable, immediately contact an authorized STERWINS customer service center. Do not attempt to adjust or replace the belt yourself, as this falls under specialized maintenance according to the manual. Replacement belt kits are available from authorized dealers such as Spareka (reference 077K246B150.53 for this model).

You can also consult the Briggs & Stratton 625EXi engine manual provided with your mower, which contains detailed information on the maintenance of the transmission and traction system. Regular and preventive maintenance helps keep your mower in good working condition and extends its lifespan.

Question 2

What should I do if the height adjustment lever does not stay in position?

Accepted Answer

On the STERWINS PLM2-46B150 lawn mower, the height adjustment lever (item 6) must remain locked in one of the 7 predefined positions (from 25 to 75 mm). If the lever does not stay in place and moves up or down by itself, it is usually due to loosening of the mechanical elements that hold it in place.

Checks and solutions:

Tighten all nuts and screws - The manual recommends checking that "all nuts and screws are properly tightened" before any use. Start by tightening the locking screw of the lever and all connections near the adjustment bar (item 65) and the adjustment plate (item 62).
Check the condition of the torsion springs - The locking mechanism uses torsion springs (item 66). A worn, broken, or misaligned spring would prevent the lever from locking. Inspect them visually.
Work on flat ground, engine off - For any adjustment or diagnosis, place the mower on perfectly flat ground and ensure that the engine is completely off and cold.

If tightening the screws and checking the springs do not resolve the issue, an internal component (broken spring, worn stop notch) may need replacement. In this case, consult an authorized STERWINS repairer.

Question 3

How to loosen or adjust the tension of the traction cable of the STERWINS PLM2-46B150 lawn mower?

Accepted Answer

The traction cable (part No. 129) of your STERWINS PLM2-46B150 lawn mower has an adjustment screw that allows you to adjust its tension.

How to adjust the cable tension:

If the cable is too loose: the mower will not move when the traction lever is activated. You will need to tighten the cable by turning the adjustment screw.
If the cable is too tight: the mower will move without you activating the lever. You will need to loosen the cable.

Procedure:

Locate the adjustment screw for the traction control cable (usually near the handlebar or the mounting block). Turn this screw to an appropriate position: turn it slightly one way or the other depending on whether you want to increase or decrease the tension, until the cable is properly taut and the lever operates smoothly.

Check the operation: the lever should engage and disengage properly without excessive effort. If these adjustments are no longer sufficient, the cable will need to be replaced.

Question 4

What type of oil and how much for the STERWINS PLM2-46B150 mower?

Accepted Answer

Oil tank capacity: 470 cm³ (approximately 0.5 liters).

Recommended oil type: Use engine oil grade SAE 30 or 10W-30. The engine is a 4-stroke, and the oil is poured directly into the designated oil fill cap.

Checking the oil level:

Check the level before each use using the built-in oil gauge
The engine must be cold and the mower on a flat surface
Top up if necessary with fresh oil of the same grade

Seasonal maintenance:

Before winter storage: drain the hot oil from the engine and replace it with fresh oil
After each use: apply a light coat of machine oil on the blade to protect it from corrosion

Question 5

What type of fuel to use for the STERWINS PLM2-46B150 lawn mower?

Accepted Answer

For the STERWINS PLM2-46B150 lawn mower, use unleaded gasoline 95 (SP95).

Essential points to follow:

Type of fuel: Unleaded 95 (SP95)
Tank capacity: 0.8 liters
Ethanol limit: maximum E10 (10% ethanol) - never use fuel containing more than 10% ethanol, as it could damage the carburetor
Equipped engine: Briggs & Stratton 625EXi, which requires strict adherence to these recommendations

Following these specifications ensures the proper functioning of the engine and prevents carburetor issues.

Question 6

How does the side ejection channel of the STERWINS PLM2-46B150 lawn mower work?

Accepted Answer

The STERWINS PLM2-46B150 lawn mower features a side ejection channel equipped with an automatic closing flap. This system allows the cut grass to be directed straight to the side of the machine using the centrifugal force created by the rotating blades. The flap is held in position by a torsion spring (part 92) that automatically operates the ejection flap during operation.

The PLM2-46B150 mower, with its 46 cm cutting width, offers three different operating modes: the default side ejection mode that throws the cut grass to the side, the mode with a 60-liter collection bag that collects the clippings, and the mulching mode that finely shreds the grass to reintroduce it as natural fertilizer (the latter requires the optional kit 077PLM2469). In side ejection mode, the flap remains active and automatically channels the cut grass to the side opening throughout the mowing process.

The effectiveness of the side ejection channel heavily depends on its maintenance. The ejection flap (part 93) works properly if the torsion spring is not damaged and if the side protective cover (part 94) is correctly installed. It is imperative to check that all deflectors and protections are assembled before each use, as the mower must never operate without the fully installed automatic closing flap for safety reasons.

To maintain optimal ejection, regularly clean the side ejection channel after each mowing session, as plant debris and wet grass can accumulate and block the passage. Also, avoid mowing on wet grass, as this would reduce the effectiveness of the ejection. This mower is recommended for areas up to 800 m². When stopping the machine or before changing accessories, ensure that the Briggs & Stratton 625EXi engine is completely stopped and the blades are immobilized for your safety.

Question 7

What does the traction cable of the STERWINS PLM2-46B150 lawn mower look like?

Accepted Answer

The traction cable of the STERWINS PLM2-46B150 lawn mower is the cable that controls the mower's forward movement. It is different from the starter cable that starts the engine. This cable connects the traction control lever, located on the upper bar of the handle, to the mower's transmission system.

Appearance and structure: The traction cable is a flexible element made of a metal wire wrapped inside a protective plastic or rubber sheath. It looks like a thin but strong rope, designed to withstand repeated stresses during use. One end of the cable attaches to the traction control handle (lever on the handlebar), while the other end connects to the wheel drive mechanism.

Role and operation: By pulling the traction control handle towards you, you tension this cable, which gradually engages the drive belt and allows the mower to move forward. The cable remains under tension as long as you keep the handle pulled.

Adjustment and maintenance: The traction cable is equipped with an adjustment screw that allows you to adjust its tension. If the cable is too loose, the mower will not move forward when you pull the handle. If it is too tight, the mower will move forward without you having to pull the handle. Proper adjustment is essential for optimal operation. Before each use, check that the cable does not have any kinks, twists, or damage, and ensure that it is neither too loose nor too tight. If you need to adjust it, use the dedicated adjustment screw for this purpose.

Question 8

Where can I buy a replacement traction cable for the STERWINS PLM2-46B150 lawn mower?

Accepted Answer

To buy a replacement traction cable for your STERWINS PLM2-46B150 lawn mower, you have several options:

DIY stores: You can visit large specialized retailers such as Leroy Merlin, Castorama, or Bricorama. These stores often offer spare parts for lawn mowers, including compatible traction cables.
Online sales sites: Platforms like Amazon, Cdiscount, or ManoMano allow you to search for specific parts by entering your lawn mower's model. This makes it easier to select the appropriate cable.
Specialized retailers: Some stores specializing in gardening equipment or spare parts for lawn mowers may have the specific cable for your model.
STERWINS after-sales service: Contacting STERWINS customer service directly or visiting their official website can provide you with precise information on the availability and ordering of the original traction cable.

By choosing one of these options, you will be able to easily find and replace the traction cable of your STERWINS PLM2-46B150 lawn mower.

Question 9

How to change the traction cable of the STERWINS PLM2-46B150 lawn mower?

Accepted Answer

To replace the traction cable of your STERWINS PLM2-46B150 lawn mower, follow these precise steps to ensure a safe and effective intervention:

1. Preparation

Make sure the mower is turned off and the engine is completely stopped.
Remove the spark plug to prevent any accidental starting during the operation.

2. Access the traction cable

Locate the cover or protection covering the traction mechanism.
Unscrew the screws or clips that hold this cover in place to access the cable.

3. Remove the old cable

Identify the cable attachment points on the traction lever and on the starting mechanism.
Detach the cable by unscrewing or unclipping the attachments.
Note the layout and routing of the cable to facilitate the installation of the new one.

4. Install the new cable

Position the new cable following the same path as the old one.
Secure it firmly to the attachment points on the lever and the mechanism.
Check that the cable is taut and slides freely without obstruction.

5. Reassemble the mower

Replace the cover or protection and re-screw the removed screws or clips.
Ensure that all parts are well secured and fastened.

6. Test the operation

Reinsert the spark plug.
Gently pull on the traction lever to check that the cable functions correctly and that the starting mechanism engages without excessive resistance.

By following these steps, you will be able to change the traction cable of your STERWINS PLM2-46B150 lawn mower safely and ensure proper functioning of the starting system.

Question 10

Where is the starter on the STERWINS PLM2-46B150 lawn mower?

Accepted Answer

The starter of the STERWINS PLM2-46B150 lawn mower is located on the engine, usually near the starting cord. It is a small lever or button designed to facilitate engine starting, especially when the engine is cold.

Location of the starter:

Look on the side of the engine, near the engine casing.
The starter often appears as a sliding lever or a toggle button.

Using the starter:

Push or pull the lever to the "ON" (or "start") position before pulling the starting cord.
Once the engine is started, return the lever to the "OFF" (or "run") position for normal operation.

This action enriches the air-fuel mixture to facilitate engine starting, especially in cold weather or after a long period of inactivity.

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