Tools and Materials Needed:
- Feeler gauge
- 5/16-inch wrench
- 1/2-inch wrench
- Phillips head screwdriver
- Flathead screwdriver
- Spark plug wrench
- Dial indicator (optional)
Procedure:
Step 1: Preparation
- Shut off the engine and let it cool down completely.
- Disconnect the battery to ensure that the engine cannot be accidentally started while you're working on it.
Step 2: Remove Spark Plugs
- Use a spark plug wrench to remove the spark plugs. This will make it easier to turn the engine by hand.
Step 3: Locate Pushrod Covers
- Identify the pushrod covers on your engine. They are typically located on both sides of the engine, near the top.
Step 4: Remove Pushrod Covers
- Use a Phillips head screwdriver to remove the screws holding the pushrod covers in place. Be careful not to drop the screws into the engine.
- Lift off the pushrod covers to expose the pushrods.
Step 5: Adjust the Pushrods
- Use a 5/16-inch wrench to turn the adjustment screw on the end of each pushrod until the specified clearance is achieved.
- The correct clearance for your engine can be found in your Harley Davidson service manual or on a decal located on the engine itself. It's typically around 0.010 to 0.012 inches.
Step 6: Use a Feeler Gauge
- Insert a feeler gauge between the valve stem and the rocker arm.
- Adjust the pushrod screw until the feeler gauge passes through with a slight drag.
Step 7: Reinstall Pushrod Covers
- Replace the pushrod covers and secure them with the screws you removed earlier.
Step 8: Reinstall Spark Plugs
- Screw the spark plugs back into place.
Step 9: Reconnect the Battery
- Reconnect the battery.
Step 10: Start the Engine
- Start the engine and let it run for a few minutes. This will allow the oil to circulate and lubricate the pushrods and rocker arms.
Check the Adjustment (Optional):
- It's a good idea to recheck the pushrod adjustment after you've ridden the motorcycle for a few miles to ensure that it hasn't changed. You can do this by following steps 2-10 again.
