LUBRICATIONExtended Oil Fill and DipsticksCheck Oil (Gear Reduction)Aluminum EnginesModels 140000, 170000, 190000Remove drain plug in bottom of gear case cover anddrain oil every 100 hours of operation. Fig. 3. Replaceplug. To refill, remove oil check plug and oil fill plug andpour oil (same grade as used in crankcase) into fillerhole until it runs out level check hole. Replace bothplugs. Oil fill plug has a vent hole and must be installedon top of gear case cover.Fig. 3. Check Oil LevelChange Oil (Gear Reduction) Cast Iron EnginesThe reduction gears are lubricated by engine crankcaseoil. Remove drain plug from gear case cover to drain oilremaining in gear case. See Fig. 4.Fig. 4. Change OilEXTENDED OIL FILL AND DIPSTICKSWhen installing the extended oil fill and dipstickassembly, the tube must be installed so the "O" ring sealis firmly compressed. To do so, push the tube downwardtoward the sump, then tighten blower housingscrew, which is used to secure the tube and bracket.When the cap and dipstick assembly is fully depressedor screwed down, it seals the upper end of the tube. SeeFig. 5.Fig. 5. Extended Oil Fill and DipstickA LEAK AT THE SEAL BETWEEN THE TUBE ANDSUMP, OR AT THE SEAL AT THE UPPER END OFTHE DIPSTICK CAN RESULT IN A LOSS OFCRANKCASE VACUUM, AND A DISCHARGE OFSMOKE THROUGH THE MUFFLER.Caution owners not to overfill the sump or crankcasewith oil when using the extended filler and dipstick. Thedipstick is marked "DO NOT OVERFILL." Excessive oilwill cause a smoking condition, as the engine attempts todischarge the surplus oil.Various styles of extended Oil Fill and Dipsticks areshown in Figs. 6, 7, 8 and 9.Fig. 6. Model Series 92000, 100000, 110000, 1300002
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