Changing the camshafts (cams) of a motorcycle requires a certain level of mechanical expertise and familiarity with the specific model. Here's a general outline of the steps involved in changing the cams on a 2005 Kawasaki Ninja ZX-636:
Preparation: Gather all the necessary tools, including a service manual for your motorcycle, new camshafts, gaskets, seals, and any other required parts.
Drain Fluids: Drain the engine oil and coolant from the motorcycle.
Remove Components: Remove any necessary components to gain access to the camshaft area. This may include fairings, fuel tank, airbox, valve cover, and timing chain tensioner.
Timing Chain: Loosen the timing chain tensioner and remove the timing chain from the camshaft sprockets. Take note of the timing marks and their alignment for reinstallation.
Remove Camshaft Caps: Remove the camshaft caps by loosening them evenly and gradually in a crosswise pattern. Take care not to damage the caps or the camshafts.
Replace Cams: Carefully remove the old camshafts and replace them with the new ones. Ensure the new camshafts are properly aligned and seated.
Reinstall Components: Follow the service manual instructions to reinstall all the components that were removed, including the timing chain, valve cover, timing chain tensioner, fuel tank, airbox, and fairings.
Fluid Replacement: Refill the engine with fresh oil and coolant, following the manufacturer's specifications.
Double Check: Once everything is reassembled, double-check all connections, adjustments, and alignments to ensure everything is in place correctly.
Test and Adjust: Start the motorcycle and let it idle, checking for any abnormal noises or issues. It's advisable to perform a thorough inspection and, if necessary, make adjustments to the valve clearances and timing.
Please note that this is a general outline, and specific steps may vary depending on the exact model and any modifications that may have been made. It's crucial to consult the service manual for your particular motorcycle for detailed instructions and specifications. If you're not confident in your mechanical abilities, it's recommended to seek assistance from a qualified motorcycle technician or mechanic.