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 HP42 16″ Petrol Lawn Mower
The Mountfield HP42 is a lightweight, hand-propelled petrol mower designed for ease of use in small to medium-sized gardens. Its reliable STIGA engine and robust steel deck deliver a consistently great cut.
Description
Why buy the Mountfield HP42 16″ Petrol Lawn Mower?
- Reliable 123cc STIGA ST120 Autochoke petrol engine for easy starting
- Compact 41cm (approx. 16″) cutting width, perfect for small to medium lawns
- Versatile 3-in-1 cutting system: collect, mulch, or rear discharge
- Durable steel deck with 6 centralised cutting height positions (22-65mm)
- Spacious 60-litre grass collector with a handy ‘bag full’ indicator
- Includes a mulching plug for naturally fertilising your lawn
An Ideal Mower for Smaller Gardens
The Mountfield HP42 is a lightweight and user-friendly hand-propelled petrol lawnmower, expertly designed for maintaining small to medium-sized gardens up to 1000m². Its combination of a dependable engine, robust construction, and practical features makes it a superb choice for homeowners seeking reliability and a high-quality finish.
Efficient STIGA Power
At the core of the HP42 is the dependable STIGA ST 120 OHV Autochoke engine. This 123cc powerhouse delivers 1.9kW of power at a fixed 2900 rpm, ensuring a smooth and reliable start every time thanks to its recoil starter. The Autochoke system simplifies operation, removing the need for priming or choke adjustments, so you can get to work faster.
Adaptable Cutting System
Versatility is a key strength of the HP42. The 41cm cutting width is managed by a durable steel deck, offering a choice of three cutting methods. For a tidy finish, the spacious 60-litre hybrid grass collector efficiently gathers clippings and features a ‘bag full’ indicator to prevent overfilling. For a more natural approach, the included mulching plug can be easily fitted. This function finely shreds the grass clippings and returns them to the lawn, acting as a natural, nutrient-rich fertiliser. A rear discharge option is also available for when collection is not required.
Adjusting the cut is simple, thanks to a single centralised lever that offers six distinct cutting height positions, ranging from a close 22mm up to a longer 65mm, allowing you to tailor the finish to your lawn’s condition.
Designed for Convenience
Weighing just 23kg, the Mountfield HP42 is easy to manoeuvre around garden obstacles. The ergonomic, soft-grip handlebar is adjustable and folds down, making storage compact and straightforward. The grooved wheels on bushings ensure smooth travel across the lawn, contributing to an effortless mowing experience.
As an authorised UK dealer for Mountfield, Sims Garden Machinery offers more than just a box. With a century of experience, our trained sales staff at our Stratford-upon-Avon showroom can ensure this is the right mower for your needs. For local customers, our service includes a comprehensive pre-delivery inspection (PDI) by our trained mechanics, ensuring your new mower is built, tested, and ready to use. We also offer free local delivery and a handover demonstration to show you how to operate it safely and effectively. This commitment to service ensures you receive a machine that’s ready to perform from day one, backed by our full workshop support.
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
| Specification | Value |
|---|---|
| Power Source | Petrol |
| Power | 1.9 kW |
| Engine Brand | STIGA |
| Engine Model | ST 120 OHV Autochoke |
| Displacement | 123 cm³ |
| Engine Rotation Speed | 2900 rpm |
| Starter | Recoil |
| Fuel Tank Capacity | 0.75 L |
| Engine Oil Tank Capacity | 0.5 L |
| Maximum Mowing Area | 1000 m² |
| Driving | Push |
| Cutting Width | 41 cm |
| Cutting Method | Collecting, Mulching, Rear discharge |
| Deck Material | Steel |
| Cutting Height Adjustment | Centralized |
| Cutting Height Positions | 6 positions |
| Cutting Height Range | 22 – 65 mm |
| Collector Capacity | 60 L |
| Collector Type | Hybrid with warn indicator |
| Handlebar Type | Ergonomic with soft grip |
| Wheels | 200/200 grooved wheels on bushings |
| Foldable Handlebar | Yes |
| Adjustable Handlebar | Yes |
| Product Weight | 23 kg |
| Guaranteed Sound Power Level (LwA) | 95 dB(A) |
| SKU | 2L0431048/M19 |
| EAN/UPC | 8008984815858 |
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
What size garden is the Mountfield HP42 suitable for?
The Mountfield HP42, with its 41cm (approx. 16″) cutting width, is ideally suited for small to medium-sized gardens, with a recommended maximum mowing area of up to 1000 square metres.
What cutting options does the HP42 offer?
This is a versatile 3-in-1 mower. You can choose to collect the clippings in the 60-litre grass bag, use the included mulching plug to finely chop and return them to the lawn as a natural fertiliser, or opt for rear discharge when collecting isn’t necessary.
Is the mower difficult to assemble from the box?
The mower arrives almost fully assembled, requiring only minimal and straightforward setup of elements like the handlebar. However, when you purchase from an authorised dealer like Sims Garden Machinery, local customers benefit from our Pre-Delivery Inspection (PDI) service, where our trained mechanics build and test the machine for you, ensuring it’s ready for immediate use upon delivery.
What type of fuel and oil are recommended for the HP42 engine?
The STIGA ST 120 engine runs on standard unleaded petrol. For engine oil, it is highly recommended to use a specific high-quality 4-stroke engine oil to ensure optimal performance and lubrication. Please refer to the engine manual for full details.
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). |
Push |
| 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 (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 |
Push |
| WB-Starting Method |
Pull (Recoil) |
| WB-Wheel Type |
Wheels |
Specification
Specification
| GENERAL INFO | |
| SKU | 2L0431048/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 | 25.5 kg |
| Product length | 1400 mm |
| Product width | 540 mm |
| Product height | 1120 mm |
| Weight | 23 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 | |
| Driving | Push |
| 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 |
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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.
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