We offer a free delivery service for all machines within a 30 mile radius. Not only that; we build, inspect and run up every machine prior to delivery. Making sure you get a fully functional machine that is set-up and ready for use. On delivery we will run through with you any instructions & maintenance advice so you are comfortable with your new machine.
Mountfield SP42 16″ Petrol Lawn Mower
The Mountfield SP42 is a lightweight and easy-to-use self-propelled petrol lawn mower, ideal for tackling small to medium-sized gardens. It features a reliable STIGA engine and a 41cm cutting width.
Description
Why buy the Mountfield SP42 16″ Petrol Lawn Mower?
- Powered by a reliable 123cc STIGA ST 120 OHV Autochoke engine
- Self-propelled rear-wheel drive for effortless mowing on slopes and uneven ground
- 41cm (approx 16″) cutting width suitable for small to medium-sized lawns
- Robust steel cutting deck for durability and long life
- Large 60-litre grass collector with a ‘bag full’ indicator
- Mulching plug included to naturally fertilise your lawn
Reliable Power and Performance
The Mountfield SP42 is a fantastic self-propelled, petrol-driven lawnmower that offers excellent value. It is powered by a super reliable STIGA ST120 123cc OHV Autochoke engine, ensuring a dependable start and consistent power delivery for a pristine cut every time. Combined with an impressive 41cm cutting width, this mower is a hard-working, dependable, and easy-to-use machine perfect for maintaining small to medium-sized lawns up to 1000m².
Effortless Mowing with Self-Propelled Drive
Mowing is made effortless thanks to the mower’s self-propelled, rear-wheel drive system. Controlled by a simple lever on the handlebar, the SP42 moves forward at a steady 3.7 Km/h, taking the strain out of cutting lawns, especially those with slopes or uneven terrain. The robust steel chassis ensures the SP42 is built to withstand the rigours of regular use, season after season.
Versatile Cutting for a Perfect Finish
The SP42 offers excellent versatility to suit your lawn’s needs. A single, centralised lever allows for quick and easy adjustment of the cutting height through six different positions, ranging from 22mm to 65mm. Grass clippings are efficiently collected in a roomy 60-litre hybrid grass collector, which features a convenient ‘bag full’ indicator to let you know when it’s time to empty. For those who prefer to recycle clippings, a mulching plug is supplied as standard. Simply insert the plug, and the mower will finely cut the grass and redistribute it back onto the lawn, acting as a natural, nutrient-rich fertiliser.
Designed for User Convenience
Weighing only 25kg, the SP42 is highly manoeuvrable and easy to handle. Its user-friendly design includes an ergonomic handlebar with a soft grip, which can be adjusted and folded down for compact storage. This makes the Mountfield SP42 a superb choice for gardeners looking for a powerful, versatile, and convenient petrol lawn mower. You can see models like this at the Sims Garden Machinery showroom in Stratford-upon-Avon.
As an authorised UK dealer for Mountfield, Sims Garden Machinery has been advising customers for over 100 years. Unlike online-only box-shifters, we offer genuine value and support. Our trained sales staff can provide expert advice at our Stratford-upon-Avon showroom, ensuring you choose the right machine for your needs. For local customers, this lawnmower includes our free PDI (Pre-Delivery Inspection), local delivery, and a full handover demonstration by our team. This ensures your new mower is built, tested, and ready to use. Furthermore, our workshop is staffed by trained mechanics who provide dedicated aftersales support and servicing to keep your machinery in top condition.
Not sure which machine or part is right for you?
Our team is here to help. Contact us today for expert advice.
Our team is here to help. Contact us today for expert advice.
Technical Specification
| Power Source | Petrol |
| Power | 1.9 kW |
| Recommended Mowing Area | 1000 ㎡ |
| Engine Brand | STIGA |
| Engine Model | ST 120 OHV Autochoke Powered by STIGA |
| Displacement | 123 cm³ |
| Engine Rotation Speed | 2900 rpm |
| RPM Control | Fixed rpm |
| Starter | Recoil |
| Fuel Tank Capacity | 0.75 l |
| Engine Oil Tank Capacity | 0.5 l |
| Cutting Method | Collecting, Mulching, Rear discharge |
| Cutting Width | 41 cm |
| Deck Material | Steel |
| Cutting Height Adjustment | Centralized |
| Cutting Height Positions | 6 positions |
| Cutting Height Range | 22 – 65 mm |
| Driving | Self-propelled |
| Traction | Rear-wheel drive |
| Speed Forward | 3.7 Km/h |
| Collector Capacity | 60 l |
| Handlebar Type | Ergonomic fixed + soft grip |
| Wheels | 200/200 grooved wheels on bushings |
| Adjustable Handlebar | Yes |
| Foldable Handlebar | Yes |
| Collector Type | Hybrid with warn indicator |
| Weight | 25 kg |
| Guaranteed Sound Power Level (LwA) | 95 dB(A) |
Why buy from Sims Garden Machinery?
Authorised main dealer
We are authorised dealers for leading brands, meaning genuine parts, manufacturer-approved training, and warranty support you can rely on.
Real people, real support
No call centres. No ticket systems. Just a knowledgeable local team you can speak to when you need help.
Expert advice — not pushy sales
Our team are trained mechanics and product specialists, so you get honest, practical advice based on how you’ll actually use the machine.
Established, independent family business
We’re a long-standing independent dealer with deep roots in the local area — built on reputation, repeat customers, and word of mouth.
Frequently Asked Questions
How should I store the Mountfield SP42?
While the mower is IPX4 certified against rain damage, it is always best practice to store petrol machinery in a dry, secure place like a garage or shed. This protects it from the elements and prolongs its life. Full storage information can be found in the user manual.
Does the SP42 lawn mower come ready to use?
When purchased from a non-specialist dealer, the mower arrives in a box and requires some assembly. However, when local customers purchase from Sims Garden Machinery, we provide a free Pre-Delivery Inspection (PDI), which means our trained mechanics build, test, and run the machine, ensuring it is ready to use upon delivery.
What is the best way to clean the mower deck?
After ensuring the mower is safely turned off and the spark plug is disconnected, use a scraper and brush to remove any residual grass and soil from underneath the deck. The manufacturer suggests using a special Mountfield scraper for this. Once debris is removed, the inside of the chassis can be carefully washed with water. Always follow the cleaning procedures outlined in the user manual.
What fuel and oil does the Mountfield SP42 need?
The engine requires standard unleaded petrol. For engine oil, it is highly recommended to use a high-quality 4-stroke engine oil. The manufacturer specifically recommends the use of specific Mountfield oil to guarantee the best engine performance and optimal lubrication.
User Manuals / Downloads
Additional information
| Brand | |
|---|---|
| Engine Size The displacement of the engine in cubic centimetres (cc). |
123 |
| Blade Brake Clutch Indicates if the blade can be stopped while the engine keeps running. |
FALSE |
| Collector Size The capacity of the grass collection bag or box in litres. |
60 |
| Cutting Method The cutting mechanism used (e.g., Rotary or Cylinder). |
Rotary |
| Cutting Width The width of the grass cut in a single pass. |
41 cm |
| Deck Material The material the cutter deck is constructed from (e.g., Steel, Aluminium). |
Steel |
| Drive Type How the mower is propelled (e.g., Push, Self-Propelled, Variable Speed). |
Self-Propelled |
| Electric Start Indicates if the machine features a key or push-button electric starter. |
FALSE |
| Mowing Functions Available mowing modes (e.g., Collection, Mulching, Side-Discharge). |
["Collection","Mulch","Rear-Discharge"] |
| Power Output (HP) The tool\'s power output measured in horsepower (hp). |
2.6 |
| Power Output (kW) The tool\'s power output measured in kilowatts (kW). |
1.9 |
| Rear Roller Indicates if the mower features a rear roller for creating lawn stripes. |
FALSE |
| Power Source The primary energy source (e.g., Petrol 4-stroke, Battery, Electric). |
Petrol |
| UNIVERSAL-Collection Type |
Collect |
| WB-Mower Type? |
Rotary |
| WB-Cutting Width |
16" |
| WB-Propulsion Type |
Self-Propelled |
| WB-Starting Method |
Pull (Recoil) |
| WB-Wheel Type |
Wheels |
Specification
Specification
| GENERAL INFO | |
| SKU | 2L0432048/M19 |
| CUTTING SYSTEM | |
| Cutting method | Collecting, Mulching, Rear discharge |
| Mulching function | Yes |
| Cutting width | 41 cm |
| Deck material | Steel |
| Cutting height adjustment | Centralized |
| Cutting height positions | 6 positions |
| Cutting height range | 22 – 65 mm |
| EQUIPMENT | |
| Collector capacity | 60 l |
| Handlebar type | Ergonomic fixed + soft grip |
| Wheels | 200/200 grooved wheels on bushings |
| Adjustable handlebar | Yes |
| Foldable handlebar | Yes |
| Collector type | Hybrid with warn |
| OVERALL DIMENSIONS | |
| Pack weight | 27.4 kg |
| Product length | 1500 mm |
| Product width | 535 mm |
| Product height | 1110 mm |
| Weight | 25 kg |
| POWER | |
| Power source | Petrol |
| Power | 1.9 kW |
| Engine Brand | STIGA |
| Engine model | ST 120 OHV Autochoke Powered by STIGA |
| Displacement | 123 cm³ |
| Engine rotation speed | 2900 rpm |
| RPM control | Fixed rpm |
| Starter | Recoil |
| Fuel tank capacity | 0.75 l |
| Engine Oil tank capacity | 0.5 l |
| Maximum working area | 300 m² |
| DRIVE SYSTEM | |
| Traction | Rear-wheel drive |
| Driving | Self-propelled |
| Speed forward | 3.7 Km/h |
| VIBRATION AND NOISE DATA | |
| Guaranteed sound power level (LwA) – dB(A) | 95 |
| Measured sound pressure level at operator ear dB(A) | 81 |
| Vibration level hand (m/s2) | 4 |
| Measured sound power level dB(A) | 94 |
Reviews (0)
About Mountfield
At Sims Garden Machinery we stock a wide range of Mountfield garden equipment. We offer a range of lawn tractors and rider mowers, suited for commercial lawn maintenance. We also have a range of regular lawn mowers, in both petrol and electric models. We stock cordless hedge trimmers and grass trimmers, along with more specialist gardening equipment like pole pruners. Finally, we have spare batteries for cordless lawnmowers, and battery charging stations.
We can deliver Mountfield garden equipment across the UK. Upon arrival a member of our team will assemble and demonstrate your equipment to you, ensuring safe and correct usage.
Our industry-trained sales team are available to help with any queries you have about our range of Mountfield gardening equipment. Speak to a member of our team today to discuss lawnmowers, hedge trimmers, or accessories. At Sims Garden Machinery we have been selling high-quality gardening equipment for over 100 years, remaining a family-run business.
Shipping & Delivery
FREE PDI, DELIVERY & HANDOVER
NATIONAL DELIVERY
- Each machine will be tested prior to delivery.
- Orders will be sent out via either ThePalletNetwork or DHL insured service.
Related products
Honda izy HRG 416 PK 16″ Push Mower
Original price was: £470.00.£359.00Current price is: £359.00. inc. VAT
STIHL RME 235 13″ Electric Lawn Mower
Original price was: £179.00.£129.00Current price is: £129.00. inc. VAT
Honda HRH 536 QX 21″ Professional Roller Mower
Original price was: £2,300.00.£1,945.00Current price is: £1,945.00. inc. VAT
Reviews
There are no reviews yet.