NOTE: The small end bushing is the basis of this check, check the bushing for wear before doing this check. Install the piston pin into…

Use a gauge to check the inside measurement of the cylinder bore [Figure 70-90-13].   Measure the six points as shown in figure [Figure 70-90-14]…

Measure the I.D. of the piston pin bore in both horizontal and vertical directions [Figure 70-90-7]. If the measurement exceeds the allowable limit, replace the…

Remove the cylinder head. (See Cylinder Head Removal And Installation on Page 70-80-4.) Remove the top edge from the cylinder bore with a ridge reamer.…

Measure the rocker arm I.D. (Item 1) [Figure 70-80-37] with an inside micrometer. Measure the rocker arm shaft O.D. (Item 2) [Figure 70-80-37] with an…

Remove the valve tappets (Item 1) [Figure 70-80-35]. Measure the O.D. of the tappet [Figure 70-80-36]. Measure the ID of the tappet bore [Figure 70-80-36].…

Measure the length of the valve spring. If the measurement is less than the allowable limit, replace the spring [Figure 70-80-33]. Free Length 1.6417 –…

Grind the valve face to the correct angle using a valve refacer [Figure 70-80-28]. Clean the valve seat and combustion chamber. Install the valve into…

Remove the valve and spring from the cylinder head. (See Cylinder Head Disassembly and Assembly on Page 70-80-7.) Remove the carbon from the valve guide.…

Install the cylinder head gasket. Put the piston (Item 1) [Figure 70-80-24] being checked at T.D.C. Put 3 pieces of 0.06 in. (1,5 mm) diameter…