12000-ZY9-415ZA Honda SEE PART DETAILS - PRI; BLOCK ASSY., CYLINDER *NH8* (Honda Code 8737330). (DARK GRAY)

Illustration 1 g00698095
Cross section of cylinder head valves in the cylinder head
Illustration 2 g00458090
Typical example of the cylinder head and the valvesThe arrow points toward the front of the engine. (1) Collet which consists of two pieces (2) Valve spring cap (3) Valve spring Free length ... 33.50 to 35.00 mm (1.319 to 1.378 inch) Length of valve spring under test force ... 30.40 mm (1.197 inch) Test force ... 69 to 79 N (15.50 to 17.80 lb) (4) Valve guide seal for the exhaust valve Type ... Black garter spring Label on the black garter spring ... "EX" (5) Recess for spring
Illustration 3 g00696804
(6) Valve guide (A) Standard clearance for the inlet valve ... 0.025 to 0.052 mm (0.0010 to 0.0020 inch) Service limit for the inlet valve ... 0.20 mm (0.0079 inch) (A) Standard clearance for the exhaust valve ... 0.045 to 0.072 mm (0.0018 to 0.0028 inch) Service limit for the exhaust valve ... 0.25 mm (0.0098 inch) (7) Exhaust valve stem Diameter of the exhaust valve stem ... 6.940 to 6.950 mm (0.2732 to 0.2736 inch) Service limit ... 6.840 mm (0.2693 inch) (8) Inlet valve stem Diameter of the inlet valve stem ... 6.955 to 6.970 mm (0.2738 to 0.2744 inch) Service limit ... 6.890 mm (0.2710 inch) (9) Valve face angle Valve face angle ... 45 degrees Valve seat angle ... 45 degrees
Illustration 4 g00696806
(10) Head of the exhaust valve (B) Thickness of the head of the exhaust valve ... 0.925 to 1.075 mm (0.03642 to 0.04232 inch) (B) Service limit ... 0.50 mm (0.020 inch) (11) Head of the inlet valve (B) Thickness of the head of the inlet valve ... 0.925 to 1.075 mm (0.03642 to 0.04232 inch) (B) Service limit ... 0.50 mm (0.020 inch)
Illustration 5 g00696807
(C) Valve depth below the cylinder head face (7) Valve depth for the exhaust valve ... 0.85 to 1.15 mm (0.0335 to 0.0453 inch) Service limit ... 1.8 mm (0.0709 inch) (8) Valve depth for the inlet valve ... 0.85 to 1.15 mm (0.0335 to 0.0453 inch) Service limit ... 1.8 mm (0.0709 inch) (12) Cap (13) Valve guide seal for the inlet valve Type ... Silver garter spring (14) Cylinder head (15) GasketThe code number that is printed on the gasket should face the cylinder head. (16) Pushrod Diameter of pushrods ... 6.30 mm (0.248 inch) Length of the pushrod ... 156.8 to 157.2 mm (6.1732 to 6.1890 inch)
Illustration 6 g00696809
(17) Valve seat insert (D) Standard width for the inlet valve and the exhaust valve ... 1.70 to 2.10 mm (0.0669 to 0.0827 inch) Service limit for the standard width ... 2.5 mm (0.0984 inch) (18) Lifter 3013, 3014, and 3024 Engines
Illustration 7 g00698095
Cross section of cylinder head valves in the cylinder head
Illustration 8 g00458090
Typical example of the cylinder head and the valvesThe arrow points toward the front of the engine. (1) Collet which consists of two pieces (2) Valve spring cap (3) Valve spring Free length ... 33.50 to 35.00 mm (1.319 to 1.378 inch) Length of valve spring under test force ... 30.40 mm (1.197 inch) Test force ... 69 to 79 N (15.50 to 17.80 lb) (4) Valve guide seal for the exhaust valve Type ... Black garter spring Label on the black garter spring ... "EX" (5) Recess for spring
Illustration 9 g00696804
(6) Valve guide (A) Standard clearance for the inlet valve ... 0.030 to 0.060 mm (0.0012 to 0.0024 inch) Service limit for the inlet valve ... 0.20 mm (0.0079 inch) (A) Standard clearance for the exhaust valve ... 0.050 to 0.075 mm (0.0020 to 0.0030 inch) Service limit for the exhaust valve ... 0.25 mm (0.010 inch) (7) Exhaust valve stem Diameter of the exhaust valve stem ... 6.940 to 6.950 mm (0.2732 to 0.2736 inch) Service limit ... 6.840 mm (0.2693 inch) (8) Inlet valve stem Diameter of the inlet valve stem ... 6.955 to 6.970 mm (0.2738 to 0.2744 inch) Service limit ... 6.890 mm (0.2710 inch) (9) Valve face angle Valve face angle ... 45 degrees Valve seat angle ... 45 degrees
Illustration 10 g00696806
(10) Head of the exhaust valve (B) Thickness of the head of the exhaust valve ... 0.925 to 1.075 mm (0.03642 to 0.04232 inch) (B) Service limit ... 0.50 mm (0.020 inch)