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- FS 40 Grass trimmer
FS 40 Grass trimmer
For trimming small areas of grass and lawn edges
For trimming small areas of grass and lawn edges. Simple starting system, multi-function controls, round handle, 2-MIX engine. With bent shaft, loop handle and AutoCut mowing head ideally for trimming small areas of grass and around obstacles.
Extend your domestic warranty from 2 to 3 years with the purchase of 5 litres of STIHL MotoMix® fuel and this product. Your STIHL Approved Dealer will register your extended warranty on the STIHL warranty database at point of purchase.
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Technical data↓
Technical data Value Power output hp 1 Performance kW 0.7 Displacement cm3 27.2 Weight kg 1) 4.4 CO² g/kWh 853 Sound pressure level with plastic tool dB(A) 2) 94 Sound power level dB(A) 2) 107 Vibration value, right with plastic tool m/s2 3) 6.4 Vibration value, left with plastic tool m/s2 3) 7 Total length cm 4) 145 Cutting diameter mm 380 Tank volume l 0.34 Cylinder Chrome Anti vibration system No AV System Displacement cm³ 27.2 Power output kW/bhp 0.7/1.0 Handle type Bow handle Muffler Standard silencer Tank cap STV screw tank cap Standard cutting tool AutoCut C 5-2 Filter Fleece filter Carburettor Flushing template / Standard carburettor / Limiter cap Starter cord Standard starter grip 1) Without fuel, cutting tool and without protection
2) K-factor according to DIR 2006/42/EC = 2.5 dB (A)
3) K-factor according to DIR 2006/42/EC = 2m / s ²
4) Without cutting tool
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Features↓
Standard features
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Reduced-emission engine technology
2-stroke engine with stratified charge. A fuel-free layer of air is created between the burned charge in the combustion chamber and the fresh charge in the crankcase, reducing the amount of fuel lost during the charge cycle. This results in more power with a lower weight, up to 20% lower fuel consumption than regular 2-stroke engines and significantly reduced exhaust emissions.
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Manual fuel pump (Purger)
A small fuel pump delivers fuel to the carburettor at the touch of a button. This reduces the number of starting strokes required following extended breaks in operations.
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Simplified starting system
Simply set the choke, pump the fuel primer, pull the starter cord and away you go! The running machine then switches off after a brief press of the stop button. Once the machine is at a standstill, the ignition activates again automatically. Thus the ignition is always ready for starting.
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Multi-function control handle
Easy, comfortable thumb-operated control means the operator's hand never leaves the handle.
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Cutting Attachments↓
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AutoCut C 6-2 mowing head
Double mowing line head for trimming and thinning work. Mowing lines are automatically extended when the mowing head is tapped on the ground. Easy loading system for quick and simple line refill. Featuring a low profile for more control and more precise trimming results. Compatible with line diameters of 2.0mm and 2.4mm.
AutoCut C 6-2 – for FS 38 / FS 40 / FS 50 C-E
Versions Price AutoCut C 6-2 - 2.0 mm £21.90* Save and compare Save and compare -
PolyCut 6-2 mowing head
Mowing head with 3 movable plastic knives. Best suited for cutting max. medium-height grass in the home garden and for the care of lawn edges. The knife can be changed quickly and without tools. The mowing head can optionally also be filled with thread pieces with a diameter of 2.0 / 2.4 mm.
PolyCut 6-2 – FSA 60 R / FSA 86 R
Versions Price PolyCut 6-2 £26.80* Save and compare Save and compare -
DuroCut 5-2 mowing head
Double or quadruple lines, for mowing and thinning work. Up to four lines can be easily inserted. Compatible with many different sizes and types of mowing line.
DuroCut 5-2 – for FS 38 / FS 40 / FS 50 C-E
Versions Price DuroCut 5-2 £27.10* Save and compare Save and compare -
Set of plastic blades for PolyCut 6-2
Replacement plastic blades for PolyCut 6-2 mowing head, set of 12 plastic blades.
Versions Price Orange PolyCut replacement blades (12) £8.25* Save and compare Save and compare -
DuroCut mowing line (line pieces)
Pieces of line cut to length for use with STIHL DuroCut mowing heads. The construction with a flexible core and a hard coating with cutting teeth ensures a long service life and high mowing performance. For clean working in high, dense and slightly woody vegetation. 48 line pieces per packet.
STIHL professional tip - leave your new mowing line in water for 24 hours before use. This will increase the flexibility and lifespan of the mowing line.
Versions Price For DuroCut 5-2, 20-2 - size L - Ø 2.0 mm x 195 m £7.85* Save and compare Save and compare -
Round mowing line (rolls)
This high performance mowing line can be used universally and is available in many different diameters for all STIHL line mowing heads. Suitable for all trimming and mowing jobs and specially developed against fraying and fusing.
STIHL professional tip - leave your new mowing line in water for 24 hours before use. This will increase the flexibility and lifespan of the mowing line.
Versions Price Roll Ø 2.0 diameter (mm) x 14.0 roll length (m) - green £4.50* Save and compare Save and compare -
Round mowing line (rolls)
This high performance mowing line can be used universally and is available in many different diameters for all STIHL line mowing heads. Suitable for all trimming and mowing jobs and specially developed against fraying and fusing.
STIHL professional tip - leave your new mowing line in water for 24 hours before use. This will increase the flexibility and lifespan of the mowing line.
Versions Price Roll Ø 2.4 diameter (mm) x 14.0 roll length (m) - orange £4.50* Save and compare Save and compare -
Round and quiet mowing line (rolls)
The spiral grooves of the low noise mowing lines considerably reduce wind noise. This mowing line is ideally suited for use with electric and cordless brushcutters due to the reduced noise level.
STIHL professional tip - leave your new mowing line in water for 24 hours before use. This will increase the flexibility and lifespan of the mowing line.
Versions Price Roll Ȼ 2.0 diameter (mm) x 14.0 roll length (m) - green £5.80* Save and compare Save and compare -
Round and quiet mowing line (rolls)
The spiral grooves of the low noise mowing lines considerably reduce wind noise. This mowing line is ideally suited for use with electric and cordless brushcutters due to the reduced noise level.
STIHL professional tip - leave your new mowing line in water for 24 hours before use. This will increase the flexibility and lifespan of the mowing line.
Versions Price Roll Ȼ 2.4 diameter (mm) x 14.0 roll length (m) - orange £5.80* Save and compare Save and compare -
Square mowing line (rolls)
Due to the four edges, this mowing line is more aggressive than the round mowing line. Ideal for effective cutting of thick, woody grass and weeds.
STIHL professional tip - leave your new mowing line in water for 24 hours before use. This will increase the flexibility and lifespan of the mowing line.
Versions Price Roll □ 2.4 diameter (mm) x 41.0 roll length (m) - orange £9.90* Save and compare Save and compare -
Pentagonal mowing line (rolls)
The pentagonal mowing line combines the aggressive edges of the square mowing line with the wide range of applications of the round line. This makes the pentagonal mower line universally usable with a high cutting performance at the same time.
STIHL professional tip - leave your new mowing line in water for 24 hours before use. This will increase the flexibility and lifespan of the mowing line.
Versions Price Roll ⬟ 2.4 diameter (mm) x 48.0 roll length (m) - orange £12.00* Save and compare Save and compare -
CF3 Pro high-tech cruciform mowing line (rolls)
The CF3 Pro mowing line consists of three different plastics, each with different features. One layer contains carbon fibers for high stability, the others provide flexibility and sturdiness. In combination with the shape and the twist, the mowing line has an excellent mowing performance with low wear at the same time.
STIHL professional tip - leave your new mowing line in water for 24 hours before use. This will increase the flexibility and lifespan of the mowing line.
Versions Price Roll CF3 - 2.0 diameter (mm) x 45.0 roll length (m) £21.65* Save and compare Save and compare -
CF3 Pro high-tech cruciform mowing line (rolls)
The CF3 Pro mowing line consists of three different plastics, each with different features. One layer contains carbon fibers for high stability, the others provide flexibility and sturdiness. In combination with the shape and the twist, the mowing line has an excellent mowing performance with low wear at the same time.
STIHL professional tip - leave your new mowing line in water for 24 hours before use. This will increase the flexibility and lifespan of the mowing line.
Versions Price Roll CF3 - 2.4 diameter (mm) x 70.0 roll length (m) £27.30* Save and compare Save and compare
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Accessories↓
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STIHL Smart Connector
STIHL Connected is a cloud based system that enables professional users to digitally manage machine fleets and work assignments.
This is managed by the STIHL Smart Connector - a sensor with a diameter of just under 5cm, which is mounted on the tool. It can be mounted on petrol, electric or battery-powered tools where it records and saves the operating hours while the motor is running and transmits this information via Bluetooth® 4.2 to the STIHL connected App (the smart connector can be mounted on non-STIHL tools too). The Smart Connector offers entirely new functions and services, as a basis for device management both in your home garden using the STIHL connected App, and for managing your machine fleet using the STIHL connected Portal. The STIHL connected Portal gives you a detailed overview of the status of your fleet of tools, as well as information such as duration of use on a particular work assignment.
You can view power tool availability, analyse machine usage; plan and manage work tasks with associated resources; and analyse machine data, which you can then use to optimise your daily work processes. The Smart Connector also provides information about upcoming tool maintenance and, if needed, the system can arrange a workshop appointment directly with a STIHL Approved Dealer. Service-related tool data can also be shared with the dealer with your permission, so they can plan the servicing work in advance and order any necessary spare parts. This can shorten service times so the tool is quickly ready for use again.
STIHL Connected is an intuitive way to manage your machine fleet and workload intelligently and efficiently. Visit: STIHL connected FAQs to find out more.
Download the app for free or visit the STIHL connected Portal by clicking on the following links:
Dimensions (l x b x h) mm 53 x 42 x 14 Signal range m Approx. 10 Running time per battery charge Year Approx. 1 Connectivity Bluetooth low energy 4.2 Battery 3V CR 2,032 Versions Price Smart Connector £20.60* Save and compare Save and compare -
Basic harness
Included as standard with most STIHL grass trimmers. For less tiring and safer work. For FS 38, FS 40, FS 50, HL and HT.
Versions Price Basic harness - one size £12.65* Save and compare Save and compare
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Documents↓
Owners manuals
* Manufacturer's recommended retail price updated as of July 2021. The manufacturer's recommended retail prices are subject to change without notice.
The version(s) available in each country may differ from the above range and specifications; specific details may be subject to change without notice. Please ask your local STIHL Approved Dealer for further information.