Mountfield SP41 Review – Petrol Rotary Lawnmower, Grey (297412048/M17)

Mountfield SP41

9.6

Performance/Quality

9.6/10

Features

9.8/10

Design

9.6/10

Practicalities

9.6/10

Warranty/Support

9.4/10

Pros

  • Self-Propelled
  • Adjustable Height, Front and Rear Wheels
  • Lightweight
  • Foldable Handles
  • 25mm-70mm cutting heights / 5 positions

Cons

  • No Mulching
  • No Side Discharge

Mountfield SP41 Review – Petrol Rotary Lawnmower, Grey (297412048/M17)

Summary of the Mountfield SP41

Mountfield SP41 ReviewThe Mountfield SP41 is a 4-stroke 2.1-horsepower petrol-powered lawn mower. It will cut the grass of a medium-sized garden up to 400m2, and the whole unit will fold down for storage. It has a good-sized 39cm blade and wide range of cutting heights; it is self-propelled and lightweight at only 20Kg.

With Mountfield’s great reputation for producing great quality lawn mowers over the decades, I was looking forward to seeing if the modern Mountfield lawn mowers still live up to this high expectation. As you can see from my video, the unboxing and assembly was very easy and I could immediately feel that the components on this lawn mower were of a high quality and well manufactured. Lifting the lawn mower from the box by holding its deck, I could feel that the deck was extremely study and hard wearing, and not flimsy like some other polypropylene decks on other mowers I  have tested. Even the cloth material on the grass collection bag felt of a much higher quality than any other petrol mower I have reviewed.

So first impressions were very good, but how does this Mountfield SP41 perform, and does it continue to impress?

In this review, we will look at all of its features and functions of this self propelled petrol lawn mower, and you can also refer to my video review below to see this mower in action. By the end of this review you will know if this is the right petrol lawn mower for you and your garden.


Mountfield SP41 Lawn MowerMain Features

  • Weight: 20 Kg (44.1lb)
  • Engine: available in 100cc or 123cc
  • Product Dimensions: 48×107×142 Centimetres (18.9×42.1×55.9in)
  • Self-Propelled Drive
  • Grass Collection Box: 40 L
  • Colour: Grey and Black
  • Blade Length: 39 Centimetres (15.3 inch)
  • Material: Polypropylene
  • Fuel Tank: 0.85 Litre

Engine

Mountfield provide the SP 41 in two different engine types, the ST120 OHV and the  RS100 OHV shown below. Please note that in my video review I tested Mountfield ST120 engine 123cc.

Mountfield ST120 Engine

Engine BrandMountfield
Engine TypeST120 OHV Autochoke
Engine Capacity123cc
Net Power Output1.55kW @ 2800rpm
Starting MethodRecoil

Mountfield RS100 Engine

Engine BrandMountfield
Engine TypeRS100 OHV
Engine Capacity100cc
Net Power Output2.0kW @ 3600rpm       
Starting MethodRecoil

Both the Mountfield engines are 4 stroke and run on regular 95 unleaded petrol and separate standard SAE30 engine oil, so no need to mix. The manufacturers recommend fuel stabilisers in any machine that spends a lot of time sitting in storage. A stabiliser will prevent corrosion and keep the internals of the engine clean.

The engine oil goes into a separate tank; SAE30 4-stroke for lawn mowers is ideal. The mower will work with other brands of SAE30 oils; engine oil is not supplied in the kit. The RS100 OHV is a 100cc recoil (or pull cord) start engine, which produces a respectable peak 2.1-horsepower. To put it into perspective, the very first motor car had 3-horsepower.

As mentioned above there is also ST120 Autochoke engine available, and you can compare the power output in the tables above.

The engine was easy to set up and the mower started first time. There is no primer button on the ST120. I was not expecting it to start on the first pull of the recoil cord, but was pleasantly surprised when it did. Subsequently, throughout my testing the Mountfield SP 41 started first time every time. The only slight difficulty I had was pouring the oil into the engine. In order to do this without spilling any oil  you will require a funnel that is not supplied with the mower.

Again, as you can see from my video below, the power of this engine was more than enough to deal with the most demanding conditions.


Mountfield SP41 Review Video

To give you a visual representation of the Mountfield SP41 please watch the video below:


Self-Propelled Drive

With a mower of this size and weight, you do not need engine help to move the machine, though it can become heavy when laden with damp grass. But with the Mountfield SP41, the engine is self propelled, driving the blades and the rear wheels.

The Mountfield SP41 runs at a single speed of 3.4km/h (2.1mph), a slow walk, which is activated when the operator brake is pulled to allow the engine to move the blades. To engage the self propelled mode, the operator lifts the throttle bar up towards the main bar to engage the clutch.

The SP (self propulsion) is a worth while addition, as this mower can also be purchased without the SP option. This is a single speed self propelled petrol lawn mower, but the speed is just about right, not too fast, not too slow and made my test up a steep slope a breeze (see video). Even if your lawn is flat and level, I would recommend that you pay the little extra and go self propelled, you will not regret it. Remember, there is an additional handle on the bar, when released it disengages the self propulsion – so you have the choice with the SP model.

If you are looking for the hand propelled (push) model of the mower, then see my review of the Mountfield HP41 by clicking here.

Check Price Now

 


Height Adjustment

Mountfield SP41 Height Adjustment

It is possible to adjust the cutting level on the Mountfield SP41 by moving the 2 levers on the front wheels. There is also a single rear lever that controls both rear wheels. These are quick lock mechanisms that ratchet 5 different height positions, from 25mm to 70mm (1 – 2.76 inches). Both front and rear wheels are the same size and made from formed plastic.

The owner may want to set the front wheels a little lower than the rear wheels to ensure they miss raised obstacles such as flagstones of chippings. All the wheels (front and rear) are the same size.

As seen in my video the height adjustment works very well and it is great that you can adjust the front wheels separately to the rear wheels. It would have been nice however, if the front wheels could have been adjusted with a single lever as opposed to a leaver on both front wheels.


Mountfield SP41 and HP41 Comparison Table

Mountfield SP41 (100cc)
Mountfield 297412048/M17 / SP41 Petrol rotary lawnmower, Grey
Mountfield SP41 (123cc)
Mountfield 297412048/AMZ SP41 Petrol Rotary Lawnmower, Grey
Mountfield HP41 (100cc)
Mountfield 297411048/M17 / HP41 Petrol Rotary Lawnmower, Grey
Mountfield HP41 (123cc)
Mountfield 297411048/AMZ HP41 Petrol Rotary Lawnmower
Product
Mountfield 297412048/M17 / SP41 Petrol rotary lawnmower, Grey
Mountfield 297412048/AMZ SP41 Petrol Rotary Lawnmower, Grey
Mountfield 297411048/M17 / HP41 Petrol Rotary Lawnmower, Grey
Mountfield 297411048/AMZ HP41 Petrol Rotary Lawnmower
Deck Size
39cm
39cm
39cm
39cm
Cutting Heights
5 Positions: 25mm to 70mm
5 Positions: 25mm to 70mm
5 Positions: 25mm to 70mm
5 Positions: 25mm to 70mm
Weight
20 kg
20 kg
20kg
20 kg
Collection Box Size
40 Litre
40 Litre
40 Litre
40 Litre
Engine
Mountfield RS100 OHV engine
Mountfield ST120 OHV Engine
Mountfield RS100 OHV engine
Mountfield ST120 OHV Engine
Engine CC
100cc
123cc
100cc
123cc
Start Type
Recoil
Recoil
Recoil
Recoil
Self Propelled
Cut and Collect
Mulching
Rear Roller
Customer Rating
-
-
-
-
Price
Price not available
£229.00
£152.88
£154.00
Prime Benefits
-
Mountfield SP41 (100cc)
Mountfield 297412048/M17 / SP41 Petrol rotary lawnmower, Grey
Product
Mountfield 297412048/M17 / SP41 Petrol rotary lawnmower, Grey
Deck Size
39cm
Cutting Heights
5 Positions: 25mm to 70mm
Weight
20 kg
Collection Box Size
40 Litre
Engine
Mountfield RS100 OHV engine
Engine CC
100cc
Start Type
Recoil
Self Propelled
Cut and Collect
Mulching
Rear Roller
Customer Rating
-
Price
Price not available
Prime Benefits
-
More information
Mountfield SP41 (123cc)
Mountfield 297412048/AMZ SP41 Petrol Rotary Lawnmower, Grey
Product
Mountfield 297412048/AMZ SP41 Petrol Rotary Lawnmower, Grey
Deck Size
39cm
Cutting Heights
5 Positions: 25mm to 70mm
Weight
20 kg
Collection Box Size
40 Litre
Engine
Mountfield ST120 OHV Engine
Engine CC
123cc
Start Type
Recoil
Self Propelled
Cut and Collect
Mulching
Rear Roller
Customer Rating
-
Price
£229.00
Prime Benefits
More information
Mountfield HP41 (100cc)
Mountfield 297411048/M17 / HP41 Petrol Rotary Lawnmower, Grey
Product
Mountfield 297411048/M17 / HP41 Petrol Rotary Lawnmower, Grey
Deck Size
39cm
Cutting Heights
5 Positions: 25mm to 70mm
Weight
20kg
Collection Box Size
40 Litre
Engine
Mountfield RS100 OHV engine
Engine CC
100cc
Start Type
Recoil
Self Propelled
Cut and Collect
Mulching
Rear Roller
Customer Rating
-
Price
£152.88
Prime Benefits
More information
Mountfield HP41 (123cc)
Mountfield 297411048/AMZ HP41 Petrol Rotary Lawnmower
Product
Mountfield 297411048/AMZ HP41 Petrol Rotary Lawnmower
Deck Size
39cm
Cutting Heights
5 Positions: 25mm to 70mm
Weight
20 kg
Collection Box Size
40 Litre
Engine
Mountfield ST120 OHV Engine
Engine CC
123cc
Start Type
Recoil
Self Propelled
Cut and Collect
Mulching
Rear Roller
Customer Rating
-
Price
£154.00
Prime Benefits
More information

Last update on 2020-09-19 / Affiliate links / Images from Amazon Product Advertising API

 


Cutting Diameter and Features

Mountfield SP41 DeckThe blade length of the Mountfield SP41 is 39 centimetres (15 in). This may sound small, but the mower is intended for use on the lawns of 400m2 (4310ft2) or smaller. To put that into perspective, you would need to spend 10 minutes walking the 190 metres (623-ft) to mow a 20×20-metre (65x65ft) garden. Though the SP41 will work on larger gardens, a small fuel tank means it will need more trips back to base to refuel.

A larger blade equals more weight and complexity; if you have a small to medium garden, then this mower is a perfect size. A smaller blade will also draw less energy from the engine, which is what makes this design more efficient than some other models.

As mentioned above, Mountfield have chosen a polypropylene deck for this mower to a mere 20 Kg. The quality of the deck is of a high standard and is built to last. The advantage of a polypropylene deck is not only the reduction in weight but you will also not have issues of rust, that can be an issue with steel decks. The smooth surface of the deck made it easy for me to brush down and clean the mower after use.


Roller (Stripes)

This Mountfield SP41 will not make stripes on the lawn, but Mountfield does make a separate unit that you can pull along your lawn to make the striping effect. If this unit is going to be used on small lawns; taking a manual roller across your lawn is going to be a quick job.


Grass Box Capacity

The grass collection bag comes with the kit and consists of a wire frame over which a 40 litre bag hangs. This grass bag frame needs assembling before it can be hung from the back of the mower. Everything about this model’s design is about saving on weight and complexity. This includes the bag build, which is a simple and strong mesh fabric.

Assembly of the grass bag actually took me slightly longer than assembly of the mower itself. Once you get the hang of attaching the plastic clips (see video) to the frame, it becomes quick and easy – and you only have to do this once.

Not only having a cloth collection bag reduces the weight, it also assists with the air circulation resulting in a more efficient collection of your clippings. The disadvantage of a cloth collection bag is that they are more prone to damage – this is particularly so if you are having to mow close to rose bushes or any sharp shrubs. Having said that, replacement collection bags are readily available here in the UK as are all Mountfield parts.


Practicalities

Mountfield SP41 Features

To start the engine on this Mountfield SP41, the operator needs to prime the engine with fuel; there is a small pump button set on top of the motor. After priming, the owner needs to stand behind the machine to hold the safety control and pull on the recoil cord. Please note that there is no priming button on the Mountfield ST120 Engine.

The 0.85 litre petrol fuel tank is mounted to the back of the engine with a wide opening to accept regular petrol can spout. Mountfield has set the filling cap above the height of the mower to make it easier to miss the engine cowling.

Petrol mowers are inherently not quiet, but Mountfield has managed to keep the noise rating of this model to a very respectable 95 decibels.

The Mountfield SP41 is a compact and lightweight lawn mower, and the handles fold flat. I had no issue fitting the mower into my standard saloon car boot.

Yes the mower doesn’t have side discharge or mulching capability, but then this mower is not designed for that market. It is a simple mower that will get the job of cutting your lawn done effectively, efficiently and with no fuss.


Safety Features

There is no ignition key on this Mountfield SP41, so for added safety, Mountfield has gone with a presence control lever – the operator must have at least one hand griping the safety handle before the machine will start. If the control handle is released, the engine will stop.


Mulching

There is no mulching on this mower, but you can use it without the bag and let the grass clipping exit under the deck. Mulching would make the clippings less visible and less likely to show on the lawn but it is not an option with this mower.

If you are looking for a mulching mower, the Mountfield SP53 is supplied with a mulching plug.


Mountfield SP41 Self Propelled Lawnmower User Manual Download

Click Here to download the Mountfield SP41 User Manual.


What’s Included in the Box?


Pros & Cons

Pros:

  • Self-Propelled
  • Rust free Polypropylene Deck
  • Adjustable Height, Front and Rear Wheels
  • Lightweight (only 20 Kg)
  • Foldable Handles
  • Good and Sharp Quality Cut
  • Efficient Collection of Grass Cuttings
  • Good After Sales Support and Spare Parts
  • Trusted Quality Brand

Cons:

  • No Mulching
  • No Side Discharge
  • Handles do not Fold at the Lower Deck Point (Middle Only)
Mountfield SP41 Height

Should You Buy this Mountfield SP41?

To keep the price down, they have used hollow plastic wheels and polypropylene deck over the blade, as opposed to steel. These are not an issue in themselves, but they would not be ideal for more commercial and heavy use purposes.

The Mountfield SP41 machine is lightweight, and there is no reason not to think that this is a fantastic value mower for what Mountfield offers as a package. This is worth buying if you have a small to medium sized garden (under 400m2), and you are looking for a premium and trusted brand that is good value, reliable with outstanding support up and down the UK, then this mower should definitely be on your shortlist.  


Conclusion

If you are looking for an entry-level mower, the Mountfield SP41 has everything you need for a small to a medium sized garden. The lack of mulching is not a big inconvenience since it is aimed at smaller lawns that would not produce that much grass.

Mulching is an effective way of distributing the cuttings without needing to re-empty the bag. It is unlikely that this 40 L grass collection bag would fill up on a smaller garden too quickly. The Mountfield SP41 is adjustable, safe, and easy to start. And the whole unit is foldable to make it convenient to store it in the tightest of spaces.


Where should I purchase this Mountfield SP41?

Mountfield RS100 OHV Engine (100cc)

Check Price Now

 

Mountfield 297412048/M17 / SP41 Petrol rotary lawnmower, Grey
  • 39cm cutting width
  • Self propelled
  • 100cc Mount field Rs100 OHV engine
  • 25-70Mm cutting height/ 5 positions
  • 40 litre grass collector
  • 39cm cutting width

Last update on 2020-09-19 / Affiliate links / Images from Amazon Product Advertising API


Mountfield ST120 OHV Engine (123cc)

Check Price Now

 

Mountfield 297412048/AMZ SP41 Petrol Rotary Lawnmower, Grey
  • 39cm cutting width
  • Self propelled
  • 123cc Mountfield ST120 OHV Autochoke engine
  • 3 lever cutting height adjustment
  • 25-70mm cutting height / 5 positions

Last update on 2020-09-18 / Affiliate links / Images from Amazon Product Advertising API


Not sure about this Petrol Lawn Mower? Click here for more Petrol Lawn Mower reviews.

Want to lean more about what’s involved in maintaining a petrol lawnmower? Check out my guide 10 Simple Steps to Maintaining Your Petrol Lawnmower


FAQs – Mountfield SP41

Is the Mountfield SP41 mower self propelled?

Yes.

Does the Mountfield SP41 have an electric start?

No, recoil start only.

Does the Mountfield SP41 have a rear roller for striped lawn?

No.

What is the difference between the Mountfield SP41 and HP41?

The SP41 is self propelled, and the HP41 has to be pushed.

Can you disengage the self propulsion on the SP41?

Yes.

How many speeds does the Mountfield SP41 have?

1 Speed.

What is the difference between the red and grey Mountfield SP41?

There is no difference, the mowers are the same apart from the colour of the deck.

Leave a Reply

Your email address will not be published. Required fields are marked *