Warm up the engine to normal operating temperature.
Stop the engine.
Remove the socket bolts and timing cover.
![](https://motoinstruction.ru/img/honda/9/116551.jpg)
Remove the crankshaft hole cap.
![](https://motoinstruction.ru/img/honda/9/116552.jpg)
Attach the timing light to the front (No.1) spark plug wire.
Read the manufacturer's instructions for timing light operation.
Start the engine and let it idle.
Idle speed: 800±100 rpm.
![](https://motoinstruction.ru/img/honda/9/116553.jpg)
The timing is correct if the "F" mark aligns with the index notch on the crankcase cover.
Stop the engine and connect the timing light to the rear (No.2) spark plug wire.
Recheck the ignition timing at the rear cylinder.
If the ignition timing is incorrect, inspect the ECM and ignition pulse generator.
![](https://motoinstruction.ru/img/honda/9/116554.jpg)
Coat a new О-ring with engine oil and install it in the crankshaft hole cap groove.
Apply grease to threads and seating surface of the crankshaft hole cap.
Install and tighten the crankshaft hole cap after checking the ignition timing.
Torque: 18 N·m (1.8 kgf·m, 13 lbf·ft).
![](https://motoinstruction.ru/img/honda/9/116555.jpg)
Install the timing cover and tighten the socket bolts securely.
![](https://motoinstruction.ru/img/honda/9/116556.jpg)