INSTALLATION
CYLINDER HEAD ON
CAUTION: Care must be taken not to damage the tappet bore or engine damage may result.
1. Install valve seal/valve spring seat (3) assembly. Push the assembly down with appropriate size socket to seat it onto the valve guide.
2. Install valve spring (2) and retainer (4) with keepers (1).
3. Place the valve keepers in the retainer. Using metric valve keeper tool such as Snap-on® GA317 (or equivalent) installer (2) and remover (1) as a handle, install valve keepers with a downward push.
4. Remove air hose and install spark plugs.
5. Install valve tappets.
6. Install camshafts (Refer to 9 - ENGINE/CYLINDER HEAD/CAMSHAFT(S) - INSTALLATION).
7. Install cylinder head cover (Refer to 9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) - INSTALLATION).
CYLINDER HEAD OFF
CAUTION: Care must be taken not to damage the tappet bore or engine damage may result.
1. Coat valve stems with clean engine oil and insert in cylinder head.
2. Install new valve stem seals (3) on all valves using an appropriate sized socket to seat the seal/spring seat. The valve stem seals should be pushed firmly and squarely over valve guide.
3. Install valve springs (2).
4. Install keepers in retainer and place on valve spring.
5. Using metric valve keeper tool such as Snap-on® GA317 (or equivalent) installer (2) and remover (1) as a handle, push downward to install keepers.
6. Check the valve spring installed height B after refacing the valve and seat. Make sure measurements are taken from top of spring seat to the bottom surface of spring retainer. If height is greater than 38.75 mm (1.525 in.), install a 0.762 mm (0.030 in.) spacer under the valve spring seat to bring spring height back within specification.
7. Install valve tappets.