Tecumseh Products OV691 Operator Manual - Page 13

II. Servicing Paper Filters Paper filters cannot be cleaned and must be replaced once a year or every 100 operating hours; more often if used in extremely dusty conditions. Replacement filters are available at an Authorized TecumsehPower Servicing Dealer. 1 NOTE DO NOT put oil on or clean a paper filter. III. Filter Removal/Installation 1. Remove wing nuts from air cleaner cover. See Figure 17 on page 10. Afterward, continue reading instructions below. 2. Remove air cleaner cover while lifting upward then outward. 3. Remove and inspect filter(s) for discoloration or dirt accumulation. If either is present, see "I. Servicing Foam Pre-Filter" instructions on page 10 and/or "II. Servicing Paper Filters" instructions. Afterward, continue reading instructions below. 4. Clean inside of cover and body thoroughly. 5. Install paper filter (see equipment manufacturer's instructions). NOTE Wire mesh side of paper filter must face air cleaner base. 6. Install foam pre-filter (see equipment manufacturer's instructions). 7. Install cover. a. Push cover inward onto base. b. Lock tabs into slots on base. c. Push down onto cover. 8. Install wing nuts and tighten securely. E. Carburetor If you think your carburetor needs adjusting, see your nearest Authorized TecumsehPower Servicing Dealer. Engine performance should not be affected at altitudes up to 7,000 feet (2,134 meters). For operation at higher elevations, contact an Authorized TecumsehPower Servicing Dealer. F. Engine Speed WARNING To avoid serious injury or death, DO NOT modify engine in any way. Tampering with the governor setting can lead to a runaway engine and cause it to operate at unsafe speeds. NEVER tamper with factory setting of engine governor. Running the engine faster than the speed set at the factory can be dangerous and will VOID THE ENGINE WARRANTY. 2 3 4 3 2 5 To Fuel Tank 1. Fuel Pump 2. Hose 3. Hose Clamp 4. Fuel Filter 5. Fuel Flow Direction Arrow Figure 18. Replacing Fuel Filter G. Adjustments DO NOT make any engine adjustments. Factory settings are satisfactory for most conditions. If adjustments are needed, contact your Authorized TecumsehPower Servicing Dealer. H. Fuel Filter Removal/Installation 1. Remove hose clamp on hose. See Figure 18. 2. Slide hose clamp away from filter; repeat for other clamp. 3. Remove hoses from fuel filter. 4. Place hoses on both ends of new fuel filter. 5. Slide hose clamp toward filter; repeat for other clamp. 6. Install hose clamp; repeat for other hose. 181-1273-14 Four-Cycle Twin Cylinder Engine • Vertical Crankshaft • Air-Cooled Page 11