Memmeddu
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- 4,776
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- Italia Sardegna
That's a great tip .Clogged exhaust silencers / mufflers is often missed by many so called experts . I often carefully took them off machines and then used the oxyacetylene torch to get them a dark cherry red so it not only burnt out oily deposits it also ignited most of the carbon clogging the drillings in the interlan hard to get at bits. Once nice & hot they self ignited for a few minutes in which I kept tapping them with a bit of old broom stick to knock the difficult bits off the metal and giving them a waft of the torch now and a gain .
I'd then drop the still very hot silencer in cold water to cool it and also give me something with which to swill out th internals at both ends . Then reheat to evaporate any water , when cooled 7 totally dry a quick spray with alu paint .
I've honestly didn't think about the muffler till I've removed the cylinder and analysed the internal.
Knowing to have everything else right remained the exhaust.
And being a cat model, knowing that my customer used wrong oil percentage and my tendency to run equipment rich in carb tuning (I've always maintained this brush cutter since he bought brand new in 2017).
Things after entering in my hands usually don't even need choke, because of lots of little adjustments and my personal way to adjust the carb (low rich and high leaner, most of the fuel comes out low jet , but I find the sweet spot to keep it responsive)