Suzuki Wagon R Manual page 3882

ENGINE MECHANICAL (Z10XEP AND Z12XEP ENGINES) 6A4-55
Valves and Cylinder Head Inspection
Valve guides
Valve stem-to-guide clearance
Using a micrometer and bore gauge, take diameter readings on
valve stems and guides to check stem-to-guide clearance. Be
sure to take reading at more than one place along the length of
each stem and guide.
If clearance exceeds limit, replace valve and valve guide.
Valve stem-to-guide clearance
Item
In 0.018 – 0.052 mm (0.0007 – 0.0020 in.)
Ex 0.028 – 0.062 mm (0.0011 – 0.0024 in.)
Valve stem diameter [A]
Item
In Standard size (GM)
Oversize (GM K1)
0.075 mm (0.0030 in.)
Oversize (GM K2)
0.150 mm (0.0059 in.)
Ex Standard size (GM)
Oversize (GM K1)
0.075 mm (0.0030 in.)
Oversize (GM K2)
0.150 mm (0.0059 in.)
Valve guide bore [B]
Item
Standard size (GM)
Oversize (GM K1)
0.075 mm (0.0030 in.)
Oversize (GM K2)
0.150 mm (0.0059 in.)
Specification
Specification
4.955 – 4.970 mm
(0.1951 – 0.1956 in.)
5.030 – 5.045 mm
(0.1981 – 0.19586 in.)
5.105 – 5.120 mm
(0.2010 – 0.2015 in.)
4.945 – 4.960 mm
(0.1947 – 0.1952 in.)
5.020 – 5.035 mm
(0.1977 – 0.1982 in.)
5.095 – 5.110 mm
(0.2006 – 0.2011 in.)
Specification
4.988 – 5.007 mm
(0.1964 – 0.1971 in.)
5.063 – 5.082 mm
(0.19933 – 0.2000 in.)
5.138 – 5.157 mm
(0.2023 – 0.2030 in.)