Usage:
1. Check the No. 1 intake valve clearance with the engine stopped. The valve clearance must be 0.30 to 0.46 mm (.012 to .018 in). If the valve clearance is not in this range, adjust the clearance to 0.38 mm (.015 in).
2. Mark Top Center Position of the crankshaft on the vibration damper or pulley.
3. Use a dial indicator to measure the intake valve movement.
4. Rotate the crankshaft in the direction of normal engine rotation. Stop when the intake valve is 1.91 mm (.075 in) off its seat in the opening sequence.
At this point the crankshaft Top Center Position Mark must be ... 1 ± 2° After Top Center
Checking Camshaft Timing
The following procedure can also be used to check camshaft timing. ?
1. Set the No. 3 intake bridge adjustment.
2. Set the No. 3 intake valve clearance.
3. Install the pin in the flywheel with the No. 1 piston at top dead center, firing.
4. Install the dial indicator (magnetic base) to the No. 3 intake bridge.
5. Remove the timing pin from the flywheel.
6. Set the gauge at "zero" and rotate the engine in the normal direction of operation (CCW as seen from the flywheel end) until the dial travel stops.
