Spark Plug - Toro 74175 Operator's Manual

Maintenance
Change Oil Filter
Replace the oil filter every 200 hours or every other
oil change.
Note: Change oil filter more frequently when
operating conditions are extremely
dusty or sandy.
1. Drain the oil from the engine; refer to
Changing/Draining Oil, page 41.
2. Remove the old filter (Fig. 28).
3. Apply a thin coat of new oil to the rubber gasket
on the replacement filter (Fig. 28).
1
Figure 28
1. Oil filter
4. Install the replacement oil filter to the adapter.
Turn the oil filter clockwise until the rubber
gasket contacts the filter adapter, then tighten the
filter an additional 3/4 turn (Fig. 28).
5. Fill the crankcase with the proper type of new
oil; refer to Changing/Draining Oil, page 41.
42
2
2. Adapter

Spark Plug

Check the spark plug(s) after every 100 operating
hours. Make sure the air gap between the center and
side electrodes is correct before installing the spark
plug. Use a spark plug wrench for removing and
installing the spark plug(s) and a gapping tool/feeler
gauge to check and adjust the air gap. Install a new
spark plug(s) if necessary.
Type: NGK BPR5ES (or equivalent) Air Gap: 0.030
in. (.75 mm)
Removing the Spark Plug
1. Disengage the power take off (PTO), set the
parking brake, and turn the ignition key to
"OFF" to stop the engine. Remove the key.
2. Pull the wire(s) off the spark plug(s) (Fig. 29).
Now clean around the spark plug(s) to prevent
dirt from falling into the engine and potentially
causing damage.
3. Remove the spark plug(s).
1
Figure 29
1. Spark plug wire installed
(s)
2
2. Spark plug