Kawasaki STX-15F service manual Periodic Maintenance

2-16 PERIODIC MAINTENANCE

Periodic Maintenance Procedures

•Measure the valve clearance between the cam and the valve lifter with a thickness gauge [A].

Valve Clearance

Standard:

IN 0.15 ∼ 0.24 mm (0.0059 ∼ 0.0094 in.)

EX 0.22 ∼ 0.31 mm (0.0087 ∼ 0.0122 in.)

○When positioning #1 piston TDC at the end of the compression stroke:

Inlet Valve Clearance of #1 and #3 Cylinders

Exhaust Valve Clearance of #1 and #2 Cylinders

Measuring Valve [•]

Bow [A]

Camshaft Sprocket Position [B]

○When positioning #4 piston TDC at the end of the compression stroke:

Inlet Valve Clearance of #2 and #4 Cylinders

Exhaust Valve Clearance of #3 and #4 Cylinders

Measuring Valve [•]

Bow [A]

Camshaft Sprocket Position [B]

If the valve clearance is not within the specified range, first record the clearance, and then adjust it.

•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.