- To change the valve clearance, remove the camshaft chain tensioner, camshafts and valve lifters. Replace the shim with one of a different thickness.
Note: Mark and record the valve lifter and shim locations so they can be reinstalled in their original positions. If there is no clearance, select a shim which is several sizes smaller and then measure the clearance.
- To select a new shim which brings the valve clearance within the specified range, Refer to the Valve Clearance Adjustment Charts.
- Apply a thin coat of molybdenum disulfide grease to the valve lifters.
- Install the camshafts. Be sure to time the camshafts properly (See Camshaft Installation in the Engine Top End chapter).
- Remeasure any valve clearance that was adjusted. Readjust if necessary.
Caution: Do not put shim stock under the shim. This may cause the shim to pop out at high rpm, causing extensive engine damage. Do not grind the shim. This may cause it to fracture, causing extensive engine damage.