McCulloch 433691 Instruction De Maintenance

Use only high quality detergent oil rated with API service 

classification SG-SL.  Select the oil’s SAE vis cos i ty grade 

according to your expected temperature.

NOTE:  Although multi-viscosity oils (5W-30, 10W-30, etc.) 

improve starting in cold weather, these multi viscosity oils 

will result in increased oil consumption when used above 

32°F (0°C).  Check your engine oil level more frequently to 

avoid possible engine damage from running low on oil.
Change the oil after every 50 hours of operation or at least 

once a year if the tiller is not used for 50 hours in one year.
Check the crankcase oil level before starting the engine 

and after each eight (8) hours of continuous use.  Add SAE 

30 motor oil or equivalent.  Tighten oil filler plug securely 

each time you check the oil level.

NOTE:  Before tipping tiller to drain oil, empty fuel tank by 

running engine until fuel tank is empty.
1.  Disconnect spark plug wire from spark plug and place 

wire where it cannot come in contact with plug.

2.  Remove engine oil cap; lay aside on a clean surface.

3.  Tip tiller on its side as shown and drain oil into a suitable 

container. Rock tiller back and forth to remove any oil 

trapped inside of engine.

4.  Wipe off any spilled oil from tiller or side of engine.
5.  Slowly pour oil down the oil fill spout, stopping every 

few ounces to check the oil level with the dipstick.

6.  Stop adding oil when you reach the FULL mark on the 

dipstick.  Wait a minute to allow oil to settle.

7.  Continue adding small amounts of oil, rechecking the 

dipstick until oil level settles at FULL.  DO NOT over-

fill, or engine will smoke heavily from the muffler on 

startup.

8.  Always be sure to retighten oil dipstick before starting 

engine.

9. Re 

con nect spark plug wire to spark plug.

Your engine will not run properly and may be damaged 

by using a dirty air filter. Clean the element after every 25 

hours of operation or every season.  Replace the air filter 

every season.  Service air cleaner more often under dusty 

conditions.
TO CLEAN AIR FILTER ELEMENT
1. Remove 

screw.

2. Re 

move air cleaner carefully to pre vent dirt from en ter-

 ing carburetor.

3.  Take air cleaner apart and clean air filter element.
4.  Wash filter element in liquid de ter gent and water. 
5.  Wrap filter element in cloth and squeeze dry. 
6.  Lightly coat filter element with clean engine oil. Squeeze 

in towel to re move excess oil. Do not satu rate.

7.  Reassemble parts and put back on carburetor.