Checking The Engine Oil Level; Changing The Engine Oil - Toro 20789 Operator's Manual

Service Item
Clean or replace the cartridge every 100
hours or each mowing season. Replace it
Air Filter—
more frequently in dusty or dirty
Cartridge
conditions.
Sharpen or replace the blade; maintain it
Blade
more frequently if the edge dulls quickly
in rough or sandy conditions.
Check the stopping time every 50 hours
or before each mowing season. The
Blade Brake
blade must stop within three seconds of
releasing the bail; if it does not, see your
Authorized Service Dealer for repair.
Self–propelled Adjust the cable and grease the
Drive rear-height adjustor brackets.
Check for leaks and/or a deteriorating
Fuel System
fuel hose. Replace parts if necessary.
Remove grass clippings and debris from
Belt Cover
under the belt cover.
Inspect and clean. Replace the spark
Spark Plug
plug if necessary.
Clean debris from the engine air cooling
Cooling System fins and the starter. Clean more
frequently in dirty conditions.
Empty the fuel tank before repairs as
Fuel Tank
directed or before storage.
Charge or replace the battery as
Battery necessary. Charge after extended
storage.
POTENTIAL HAZARD
If you leave the wire on the spark plug, someone could start the engine.
WHAT CAN HAPPEN
Someone accidentally starting the engine could seriously injure you or other bystanders.
HOW TO AVOID THE HAZARD
Remove the wire from the spark plug before you do any maintenance. Push wire aside so it
does not accidentally contact the spark plug.

Checking the Engine Oil Level

Before you use the lawn mower, make sure that the oil
level between the Add and the Full marks as shown on the
dipstick (Fig. 8). If the oil level is below the Add mark,
add oil. Refer to Filling the Crankcase Oil on page 9.
Service Operation
CAUTION
16
Each 5
Use Hours

Changing the Engine Oil

Change the oil after the first five operating hours and then
after every 50 hours or every season. Run the engine just
before changing the oil to warm the oil. Warm oil flows
better and carries more contaminants.
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Hours Hours Hours
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