Suzuki Jimny Service Manual page 545

6A1-64 ENGINE MECHANICAL (M13 ENGINE)
• Using a cylinder gauge (1), measure cylinder bore in thrust
and axial directions at two positions ("a" and "b") as shown in
figure.
If any of the following conditions is noted, rebore cylinder.
1) Cylinder bore dia. exceeds limit.
2) Difference of measurements at two positions exceeds taper
limit.
3) Difference between thrust and axial measurements exceeds
out-of-round limit.
Limit on cylinder bore diameter
78.114 mm (3.073 in.)
Limit on taper and out-of-round for cylinder
0.10 mm (0.004 in.)
NOTE:
If any one of four cylinders has to be rebored, rebore all
four to the same next oversize. This is necessary for the
sake of uniformity and balance.
"a" : 50 mm (1.96 in.)
"b" : 95 mm (3.74 in.)
Pistons
• Inspect piston for faults, cracks or other damaged.
Damaged or faulty piston should be replaced.
• Piston diameter:
As indicated in figure, piston diameter should be measured
at a position 19.5 mm (0.77 in.) from piston skirt end in the
direction perpendicular to piston pin.
Piston diameter specification
Standard size
Oversize
0.50 mm (0.0196 in.)
"a" : 19.5 mm (0.77 in.)
77.953 – 77.968 mm
(3.0690 – 3.0696 in.)
78.453 – 78.468 mm
(3.0887 – 3.0893 in.)