Swift GA L4-1298cc 1.3L SOHC MFI (2001)
Using a micrometer and a bore gauge, measure rocker shaft diameter and rocker arm I.D.
Difference between two readings is arm-to-shaft clearance on which a limit is specified.
If limit is exceeded, replace shaft or arm, or both.
Cam Wear
Using a micrometer, measured height of cam. If measured height is below limit, replace camshaft.
Camshaft Runout