Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions
Let’s discover the main instructions that will allow us to remove and replace the air filter on a Harley Davidson Road King, as well as on a Sportster, by following these simple steps. First, unscrew the screws of the air filter located on the right side of the bike; then remove the cover and replace the air filter with the new one, as shown in the video. At this point, clean the air filter housing thoroughly and reassemble everything, applying the reverse procedure for reassembly!

Updated on 13 May 2026 by ScegliAuto

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How to Service the Piaggio Vespa GTS 300

This brief guide will illustrate the main steps to perform the routine maintenance service on the Piaggio Vespa GTS 300, replacing the engine oil and oil filter. First, place the scooter on the centre stand and start by unscrewing the oil drain bolt found under the engine, allowing it to drain into a container for about ten minutes; then unscrew the oil filter cartridge using the appropriate tool, and hand-tighten the new one. Finally, unscrew the filler cap and top up, filling to the maximum level mark!

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