I need a manual to service Crank case oil summer use SAE 30 or 10w-30: winter use SAE 5w-30 or 10w-30. motor is Briggs & Stratton it has Sprint 35 on top. model no. 95902 type 011401 code 91091005. The mower body has Flymo electrolux , the chute flap says model RL320, serial no. 2310091 product no. A9003904-12, Crank case oil summer use SAE 30 or 10w-30: winter use SAE 5w-30 or 10w-30. . thankyou for any help you can offer. Kylie