2003 Bombardier Rally 200 Service Manual, Page 117Get this manual
Section 03 ENGINE Subsection 07 (LUBRICATION SYSTEM)
ENGINE OIL PRESSURE REGULATOR
The oil pressure regulator is located on the engine PTO side underneath the water inlet port
R175motr135A
R175motr134A
Valve housing Compression spring Ball Oil pressure regulator port
1Oil pressure regulator plug 2Gasket ring 3Valve housing
Clean and Inspection
Clean oil pressure regulator bore from contamination with an air gunNOTE: Contamination has to pass oil filter or goes back to bottom of crankcaseThe dirt will not reach the oil circulation inside the engineInspect valve housing for damagesCheck compression spring for free lengthCOMPRESSION SPRING FREE LENGTH mm (in) NEW NOMINAL SERVICE LIMIT 13.5 mm (.543 in) 13.2 mm (.519 in)