2004 Bombardier Outlander 330/400 Factory Service Manual, Page 138Get this manual
Subsection 09
Section 03 ENGINE (CYLINDER AND HEAD)
Inspection
Check valve spring for visible damagesIf so, replace valve springCheck valve spring for free length and straightness
R400motr78A
1Valve spring compressor clamp (PN 529 035 724) 2Valve spring compressor cup (PN 529 035 725) 3Valve cotter
R400motr80A
AValve spring length
VALVE SPRING FREE LENGTH NEW NOMINAL SERVICE LIMIT 40.81 mm (1.607 in) 39.00 mm (1.535 in)