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Use the correct size spark plug socket, ratchet wrench, extensions and possible a universal or swivel adapter. Remove the plug wire, remove plug with socket/wrench, insert and snug down new socket and firmly seat plug wire. Do one at a time so as not to cross wires uo. Be careful inserting new plug so as not to cross the threads uo and make sure the gap of the plug is correct for you engine.
They usually aren't attached per se, they fit in a socket that is snug enough to hold them. But the spark plug wires trap them into position. So you can go ahead and pull the spark plug wire off.
One thing to remember, when you go to replace the spark plugs you won't be able to see if they are cross thread in their hole, so DO NOT use a socket until you are sure the are properly seated and not cross threaded.
I discovered that you must only use an SD card and not an SDHD card.
I bought a bigger SD card (2Gig), installed it and copied the data I wanted without any probs. With the SDHD card I couldn't transfer anything and didn't get any help as to why...(there's a lot to be said for trial & error).
Those are as easy as they come these days.
Mark each spark plug wire with a piece of tape with the cylinder # written on it, so as not to mix up the wires.
Remove each spark plug wire by firmly grasping the wire by the boot (do not pull on the wire) and twist it back and forth a few times while pulling slowly. It should pop off without a great deal of effort. If it is seized and it breaks, you will have to replace the wire, or at the very least replace the terminals (if you can get some).
Use an air hose and blow around the base of each spark plug to dislodge any loose dirt that could fall into the cylinders (not absolutely necessary, but a good idea).
Remove each spark plug with a spark plug socket and extension and ratchet (I forget which size socket, it's either 5/8 or 13/16).
Check the gaps of each new spark plug (typically around 0.035 in).
re-install each new spark plug by hand (do not cross-thread them) and once you have ensured that the plug is threaded in properly, tighten the plug until it seats, and then tighten an additional 1/16 of a turn. Repeat this for the remaining plugs.
Re-install wires to the corresponding spark plugs.
As a preamble when you have expelled all the water from the cylinders and you again add fresh oil. For this first bit you will only need a minimum of oil 2 litres (4 pints). Turn the engine on the starter again for a minute or two with the plugs out. This will allow the oil to help flush any water from the passageways. Remove and discard this flushing oil and now fill the engine wit he required amount of new oil.
Put a tiny amount of grease (Copper based anti seize will do well) on the first few threads of each plug. Put a piece of cloth down each plug socket and turn the cloth counter clockwise, this will ensure the cloth is not drawn into the cylinder whilst it cleans out the threads. Hold the top of the plug in a length of rubber hose and then post the plug down into its socket. Turn the hose, again counter clockwise, and feel for the thread stepping; this process will help prevent cross threading. Just after a 'step' start to turn the rubber hose clockwise to engage the thread and then continue to twist it in. Holding the plug in length of rubber hose ensures that if the plug begins to become cross threaded no damage will occur as the plug either rotates in the hose or the hose twists on itself. Plugs are fitted in tight tolerance threads to prevent gas blow by or plug ejection when running; as a consequence they do not slide in as easily as a standard bolt and always a bit on the tight side. Once you are happy that a plug is engaged pull off the hose and inspect the top of the plug just to make a final check that the plug lies central to its socket (if cross threaded it will be off centre). Tighten down to the specific torque settings. Re attach the high tension plugs in the right order.
Thanks for your feedback. When you say "It also smells madly fuel when I start the bike." does the bike start? I'm going to assume not. I don't know much about Fuel Injection but there is three things motors need to run - compression, fuel and spark. It sounds like you have compression and fuel, so we need to check for spark. Chances are the plugs are simply fouled with gas. You can simply buy new plugs (esp if they're old) or check the existing ones for spark. CHECK FOR SPARKThe best way is to remove all of the sparkplugs, re-connect them to their wires, rest the threads against a good ground. Turn the motor over and look for a good fat white spark. If no spark, make sure all 'safety' switches are in a start position (side stand up, neutral, kill switch on etc.) Good lcuk & let us know!
Be sure to put a dab of neversieze on the sparkplug threads when re-installing.