Kohler 1406702-S Engine Connecting Assembly Rod

The Kohler 1406702-S Engine Connecting Assembly Rod joins the piston and crankshaft, allowing engine power to be transferred efficiently for smooth internal movement during normal lawn mower operation.

Common Symptoms:

• Engine produces heavy knocking sounds.

• Crankshaft turns with difficulty.

• Engine loses power under load.

• Excessive connecting rod bearing wear.

• Engine stops during operation.

Connecting Rod Knock

Quick Check: Listen for a metallic knocking sound that increases with engine speed.

Fix Suggestion: Replace the connecting rod assembly if excessive wear or damage is detected.

Prevention Tip: Maintain the recommended engine oil level at all times.

Restricted Crankshaft Rotation

Quick Check: Rotate the crankshaft manually after removing the spark plug.

Fix Suggestion: Inspect internal engine parts and replace damaged components before operation.

Prevention Tip: Change engine oil at scheduled service intervals.

Power Loss Under Load

Quick Check: Observe engine output while mowing dense grass.

Fix Suggestion: Repair worn internal components affecting piston and crankshaft movement.

Prevention Tip: Avoid operating the engine with low lubrication.

Bearing Surface Damage

Quick Check: Inspect the connecting rod bearing area during engine service.

Fix Suggestion: Install a replacement rod if bearing surfaces show scoring or wear.

Prevention Tip: Use clean engine oil to minimize internal friction.

Customer Experience: One equipment owner noticed smoother engine operation and quieter mechanical movement after replacing the connecting rod assembly during routine engine repair.