X-90 (4WD) L4-1591cc 1.6L SOHC MFI (1998)
Valve Spring: Specifications
Valve spring squareness limit ............................................................................................................................................................... 2.0 mm (0.079 inch)
NOTE: Use a square and surface plate to check each spring for squareness in terms of clearance between end of valve spring and square. Valve
springs found to exhibit a larger clearance than limit given above must be replaced.