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Some fancy prices around for petrol strimmers. My B&D electric has packed up so I'm looking to get a petrol one. Just how good are these cheaper ones?
di it start for you as i found that if you start it in full choke it floodsstart it on run
Quote from: waggi on May 29, 2005, 21:13:56di it start for you as i found that if you start it in full choke it floodsstart it on runThe instructions for my Ryobi petrol strimmer (smallest version, basically the same model as the JCB one in Argos) say that to start from cold you press the primer bulb eight times, pull the starting cord 4-6 times on full choke (it won't go, but it lubes the engine), switch to half choke, hold it on full throttle and pull until it starts. Quite lumpy at first, but wait for 10-15 seconds then open the choke fully and whoosh - you're off. If you start it from cold with the choke open there will not be enough 2-stroke oil in the engine to lubricate it fully, and you'll decrease the life of the piston.
Now I'm confused - you say that if you start it from cold with the choke open, you'll knacker the piston, but isn't that exactly what you're trying to do by pulling the starting cord 4-6 times on full choke?
Quote from: wivvles on May 31, 2005, 14:02:55Now I'm confused - you say that if you start it from cold with the choke open, you'll knacker the piston, but isn't that exactly what you're trying to do by pulling the starting cord 4-6 times on full choke?You're only turning it over (relatively slowly) when you pull the cord at first on full choke. Essentially you're squirting in fuel and oil mix, lubricating the inner workings before it starts. If you manage to start it from cold, at full throttle with no choke, you're forcing the engine to function at huge rpm with little or no lubrication.It probably won't knacker the piston in the short term, you're just causing more friction/wear in the engine than is necessary, which is likely to decrease it's life.