Suzuki Wagon R Manual page 2223

6A2-56 ENGINE MECHANICAL (M13 ENGINE)
Valves and Cylinder Head Components
Measure cylinder head bore and tappet outside diameter to deter-
mine cylinder head-to-tappet clearance. If clearance exceeds
limit, replace tappet or cylinder head.
Cylinder head to tappet clearance
Standard: 0.025 – 0.066 mm (0.0010 – 0.0025 in.)
Limit: 0.15 mm (0.0059 in.)
Tappet outside diameter [A]
Standard: 30.959 – 30.975 mm (1.2189 – 1.2194 in.)
Cylinder head tappet bore [B]
Standard: 31.000 – 31.025 mm (1.2205 – 1.2214 in.)