Suzuki Swift User Manual page 286

6A-22 ENGINE MECHANICAL (G10, 1-CAM 6-VALVES ENGINE)
Valve Springs
D Referring to data given below, check to be sure that each spring
is in sound condition, free of any evidence of breakage or weak-
ening. Remember, weakened valve springs can cause chatter,
not to mention possibility of reducing power output due to gas
leakage caused by decreased seating pressure.
Item
Valve spring
free length
Valve spring (20.9 – 23.5 kg) at
preload 32.6 mm (46.1 –
51.8 lb at 1.28 in.)
D Spring squareness:
Use a square and surface plate to check each spring for square-
ness in terms of clearance between end of valve spring and
square. Valve spring found to exhibit a larger clearance than limit
must be replaced.
Valve spring g
squareness limit.
Standard
42.29 mm
(1.6649 in.)
209 – 235 N
187 N (18.7 kg)
(41.2 lb at 1.28 in.)
2.0 mm (0.079 in.) 2 0 mm (0 079 in )
Limit
41.0 mm
1.6142 in.)
at 32.6 mm