Kohler CH6 Owner's Manual
![Kohler CH6 Crankshaft manual cover](/images/OUBrgwYVLLVMjSfmUleKJjLY/thumbs/thumb175x175.webp)
To replace a Kohler CH6 crankshaft, first disconnect the spark plug, drain the oil, and remove the engine from the equipment. Disassemble the engine to access the crankshaft, remove the old crankshaft, and install the new one. Reassemble the engine, refill the oil, and reconnect the spark plug.
Inspect the crankshaft for visible signs of wear such as scoring, pitting, or cracks. Use a micrometer to measure journal diameters and check for out-of-round conditions. Excessive vibration during operation may also indicate wear.
Regularly inspect the crankshaft every 100 hours of operation for signs of wear and damage. Perform an oil change every 50 hours to ensure proper lubrication. Ensure that the crankshaft is free from debris and dirt.
A crankshaft may break due to excessive engine load, insufficient lubrication, manufacturing defects, or severe impact. Regular maintenance and avoiding overloading the engine can prevent breakage.
Use high-quality engine oil as specified by Kohler. Ensure the oil level is adequate and change the oil filter regularly. Proper lubrication requires consistent oil changes according to the engine's operating hours.
Symptoms include unusual knocking noises, vibrations, difficulty in starting the engine, and decreased performance. Visual inspection may reveal cracks, scoring, or deformation.
Minor damage such as scoring or small surface defects can sometimes be repaired by a professional. However, significant damage like cracks or severe wear generally requires replacement.
Basic tools include a socket set, torque wrench, puller for the flywheel, micrometer for measurements, and a suitable engine hoist or support. Always consult the service manual for specific tools required.
Align the crankshaft with the main bearings using alignment tools recommended by Kohler. Tighten the bolts to the specified torque and check for free rotation without binding.
Handle the crankshaft carefully to avoid dropping or striking it against hard surfaces, which can cause damage. Wear gloves to protect against sharp edges and ensure a clean work environment to prevent contamination.