Efco MTH 510 / MTH 5100 Petrol Chainsaw

  • Product Details

    The new Efco MTH 510/MTH 5100 18″ petrol chainsaw is new homeowner saw for the more demanding user. Features a 51cc two stroke engine and Oregon cutting system for rapid cutting.
    Aluminium adjustable oiler: facilitates the task of the operator by allowing variation of the oil feed, according to the nature of use and the bar/chain combination; zero oil flow with the engine at idling speed ensures lower consumption and reduced impact on the environment.

    Lateral chain tensioner: simplifies tensioning adjustments while avoiding any risk of contact with the chain.

    The adoption of a fuel tank separated from the body of the machine protects the fuel from the heat of the engine, that favors the good operation of the machine in every environmental condition and of job.

    Filter cover with knob: inspection and replacement of air filter and spark plug with no tools required

    Nylon mesh filter surface: easier to clean and extended lifetime.


    Anti-vibration system utilizing 1 spring damper and 5 rubber stops with hands and body completely isolated from machine vibrations, the operator benefits through increased comfort.

    Automatic lever starter: a single command for activation of semi-acceleration.

    Primer : fuel mixture is drawn actively into the carburettor to facilitate starting from cold, after refuelling and following long idle periods.

    Reinforced muffler designed to reduce noise emissions even at maximum rpm.

  • Tech Info

    Technical Specifications

    3.0 HP - 2.2 kW/50.9 cm³
    Bar length (nose)
    46-51 cm, 18''-20''
    Chain (pitch x gauge)
    Oregon .325" x 3/8"
    Oil Pump
    automatic, adjustable, zero flow rate at idle speed
    Oil/fuel tank capacity
    0.27 L/0.5 L
    Sound pressure/power level
    110/113 dB(A)
    Lh/rh vibration level
    5.2/4.8 m/s²
    Dry weight without bar and chain
    5.1 Kg
    User's and maintenance manuals

    SLI Bar Length


    SLI Category


    SLI Power Source


  • Brand
    About Efco
    Giacomo Ferretti set the foundations of the Efco brand on the road to success back in 1978, spotting an opportunity to satisfy an Italian market beginning to demand high quality outdoor power tools. He responded by producing Efco lawnmowers, brush cutters, and chainsaws. Due to the high quality of the machinery made, the manufacturing of these products soon developed an enviable reputation amongst forestry and agricultural workers, users that demanded the best performance possible from their equipment. Sales of Efco lawnmowers began to soar during the intervening years and the Efco brand is now internationally recognised as a leader in the field of garden machinery manufacturing.

    They take their role very seriously though, and were the first company in this sector to achieve official certification in three crucial areas of business sustainability: the ISO 9001:2008 certification for quality in 1996, the SA 8000:2008 certificate for ethical processes of production in 2006 and the ISO 14001:2004, recognising Efco's efforts to reduce their impact on the environment with an ongoing commitment to become Carbon Neutral starting in 2010.
  • Why Buy From Us

    So why buy from Lawnmowers Direct?

    Well firstly, we're pretty good at what we do. In fact, we'd class ourselves as experts. With more than 60 years experience supplying lawnmowers to both home users and professionals, we know what we're talking about. We pride ourselves on our high levels of customer service and we're happy to provide help and support throughout the process, from your initial decision making to after sales, servicing, repairs and spare parts. The service we're offering is a complete one, and unlike some other companies, we are specialists.

    We know that not all our customers are looking for the same products, and that they come to us with different knowledge levels. We've built a Free Advice section to help you if you're not sure where to start looking, or you can use our search facility if you've more of an idea what you're looking for. If there's anything you can't find or you just need a little bit more help, feel free to Contact Us.

    All petrol machinery is checked before dispatch by our team of trained mechanics. While this means we can't always offer same day dispatch, it does mean you'll be getting a bit of kit which will definitely work. We know sometimes things go wrong, but we do our best to make sure they don't, and if you have any problems just get in touch with our customer service team who will be able to help fix it.

    If you're not convinced, have a little look at our reviews.

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