Toro MultiPro 1750, Operator'S Manual

Page: 49 / 80

tighten the filter an additional 1/2 turn ( Figure
43 ).
6. Fill the crankcase with the correct type of new
oil; refer to
Changing the Engine Oil (page 48) ,
steps 8 through 10 .
7. Dispose of the used oil filter at a certified
recycling center.
Changing the Spark Plugs
Service Interval: Every 200 hours
Type: Champion RC-12YC (or equivalent)
Air Gap: 0.76 mm (0.030 inch)
Make sure that the air gap between the center and
side electrodes is correct before installing the spark
plugs. Use a spark-plug wrench for removing and
installing the spark plugs and a gapping tool/feeler
gauge to check and adjust the air gap.
Removing the Spark Plugs
1. Position the machine on a level surface, engage
the parking brake, shut off the sprayer pump,
shut off the engine, and remove the key.
2. Release the latch on the back of the seat and lift
the seat forward.
3. Pull the wires off the spark plugs ( Figure 44 ).
4. Clean around the spark plugs to prevent dirt
from falling into the engine and potentially
causing damage.
5. Remove the spark plugs and metal washers.
g001985
Figure 44
1. Spark-plug wire 2. Spark plug
Checking the Spark Plugs
1. Look at the center of the spark plugs ( Figure 45 ).
Note:
If you see a light brown or gray coating
on the insulator, the engine is operating properly.
A black coating on the insulator usually means
that the air cleaner is dirty.
Important:
Do not clean the spark plugs.
Always replace a spark plug when it has a
black coating, worn electrodes, an oily film,
or cracks.
2. Check the gap between the center and side
electrodes (
Figure 45 ) and bend the side
electrode, if the gap is not correct.
g000533
Figure 45
1. Center-electrode insulator 3. Air gap (not to scale)
2. Side electrode
Installing the Spark Plugs
1. Install the spark plugs and metal washers.
2. Tighten the spark plugs to 24.4 to 29.8 N∙m (18
to 22 ft-lb).
3. Push the wires onto the spark plugs ( Figure 44 ).
4. Close and latch the seat.
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