Aspen 4 alkylate 4-stroke petrol 4 X 5 Litre

Product Information

The HHH 25D 75E is fitted with one of Honda’s 25cc mini four-stroke GX25 petrol hedge trimmer engines and is one of the first four-stroke petrol hedge trimmers on the market. The Mcculoch HT 5622 has standard steel blades with a dual actual cutting blade motion. The length of the blade is 56cm with a cutting gap of 22mm, although cutting branches with a maximum diameter of 19mm is recommended.

If the strimmer comes with two head attachments, one of them will likely be narrower than the other, making it more versatile. With their EBH252U model, Makita has chosen to go with a 1 horsepower, 24.5cc 4 stroke engine instead. This engine is quieter than 2 stroke types and the clean exhaust system makes sure minimal emissions are released. Being one of only a few 4 stroke petrol strimmers for sale in the UK at the moment, it’s a league above most of what we’ve reviewed in terms of quality and although costing much more money, I can’t help but think it’s still extremely good value. Finally, this Makita petrol leaf blower comes with a vacuum and mulching mode, which you can use if you buy the vacuum attachment.Most people use “Super Unleaded” 97 or 98 RON petrol in their lawn mower, because it has just a 5% ethanol content. There is little benefit in using premium fuels (such as Shell V-Power) in small engines such as your lawn mower. Can you use E10 petrol in a lawn mower? In 1884, Otto's company, then known as Gasmotorenfabrik Deutz (GFD), developed electric ignition and the carburetor. In 1890, Daimler and Maybach formed a company known as Daimler Motoren Gesellschaft. Today, that company is Daimler-Benz. Intake: Also known as induction or suction. This stroke of the piston begins at top dead center (T.D.C.) and ends at bottom dead center (B.D.C.). In this stroke the intake valve must be in the open position while the piston pulls an air-fuel mixture into the cylinder by producing a partial vacuum (negative pressure) in the cylinder through its downward motion.

I’ve personally owned a few Stihl products over the years, and one thing that has always stood out for me is how easy their petrol tools start, and I was happy to see that this trend is continuing in the FS55. Unlike some, where you have to yank the cord quite hard multiple times, the FS55 only required a couple of smooth pulls and the 27.2cc engine burst into life. four-stroke cycle, principle by which most modern automobile engines function. As illustrated by the figure, while the inlet valve is open, the piston first descends on the intake stroke. An ignitable mixture of gasoline vapour and air is drawn into the cylinder by the partial vacuum thus created. The mixture is compressed as the piston ascends on the compression stroke with both valves closed. As the end of the stroke is approached, the charge is ignited by an electric spark. The power stroke follows, with both valves still closed and the gas pressure, due to the expansion of the burned gas, pressing on the piston head or crown. During the exhaust stroke the ascending piston forces the spent products of combustion through the open exhaust valve. The cycle then repeats itself. Each cycle thus requires four strokes of the piston—intake, compression, power, and exhaust—and two revolutions of the crankshaft.A unique 4-way Anti-Vibration clutch reduces vibration. An ergonomic hand grip and a three-positon rotating handle that can be swivelled through 180 degrees ensure exceptional manoeuvrability and comfortable use even when used for long periods. Vibration levels are low on the Stihl, and I think this is due n large part to the high-quality materials used in its construction, coupled with some top-notch engineering. Everything on this product just lets you know that it is part of something better than the average, and I have to admit that it’s a nice feeling. The bump feed nylon wire strimmer head and metal blade brush cutter can be changed over easily and share a universal guard. The cutting widths for these heads are 40cm for the strimmer and 23cm for the brush cutter. I have to say the nylon wire head doesn’t seem to have been built to the same standard as the rest of the product and the plastic didn’t feel as though it would last that long but I think that’s just down to the sheer power of the engine obliterating the plastic line( as well as the grass and brush in its way 🙂 ). I hardly feel it’s fair to call that a fault! You have a finite period of time that you can run the grass trimmer for before the battery runs out. Tougher tasks may make the battery drain faster, and recharging can take the best part of an hour which can be interruptive. As a result, they’re not the most appropriate for longer jobs. Before talking about the best way to prepare a petrol strimmer so that it’s easier to start, it’s worth mentioning that some petrol machines come with an ‘electric start’ function. This means they can be started with the push of a button, much like an electric machine.

Remember that larger engines often result in a heavier unit. So, to control a powerful strimmer with a 52 cc engine you need to be quite confident in your physical ability. Starting a Petrol Strimmer The blow speed of a petrol leaf blower determines the amount of force that it can blow with. Having more force is especially helpful for clearing slightly wet leaves, as well as large piles of garden debris. This is why petrol blowers are the most common type used by gardeners and homeowners alike. Petrol engine sizes Here is some useful information to bear in mind before buying a petrol grass trimmer: Petrol Garden Strimmers Vs. Electric Strimmers

Some users complained about the engine’s performance; however, these complaints should be considered the exception rather than the rule. McCulloch has taken into consideration the fact that petrol strimmers shake a fair bit when operating at high revs, and have installed an anti-vibration system that sits just under the engine, a nice touch and to be expected of a higher quality piece of kit. This is one of the better anti-vibration features that I’ve seen, and when compared to most of the trimmers I’ve had in the past, there was a significant reduction in shaking. The shaft can be split in half for ease of transport and storage and the design of the adjustable handle is one that is very compact and space-saving. Instead of bike style handlebars, or large cow horns, McCulloch has opted for a small, triangular-shaped loop handle and it is padded and comfortable.