Remove #1 spark plug, turn engine to TDC #1 on compression stroke (you can tell this several ways--put plug in loose and listen for compression escaping, use compression gauge, stick finger in hole to feel pressure (not recommended cause as engine goes past TDC may suck finger into hole), or examine valves if cover is off-you should have intake closed and exhaust closed). There should also be marks on the crank pulley, but the TDC mark can be showing TDC on compression stroke or 360 degrees off on exhaust stoke. If this doesn't help, google search 4 stroke engine cycles.
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Remove #1 spark plug, turn engine to TDC #1 on compression stroke (you can tell this several ways--put plug in loose and listen for compression escaping, use compression gauge, stick finger in hole to feel pressure (not recommended cause as engine goes past TDC may suck finger into hole), or examine valves if cover is off-you should have intake closed and exhaust closed). There should also be marks on the crank pulley, but the TDC mark can be showing TDC on compression stroke or 360 degrees off on exhaust stoke. If this doesn't help, google search 4 stroke engine cycles.