2003 Polaris Scrambler 50-90 Sportsman 90 Predator 90 Service Manual, Page 32Get this manual
ENGINE 5Loosen the oil pump cable2Perform checks on fluid levels, controls, and all important areas on the vehicle as outlined in the daily pre-ride inspection checklistExhaust 1Replace exhaust gasketsSeal connections with high temp silicone sealant2Check to be sure all springs are in good conditionEngine Break In Period Engine Break-In Period is defined as the first 10 hours of engine operation, or full tanks of fuel1Use only Polaris Premium cycle engine oilNever substitute or mix oil brandsSerious engine damage can result2Use fuel with minimum octane of 87 (R+M)2 method
6Remove the oil pump adjustment cable