Servicing The Spark Plug - Toro 74251 Operator's Manual

Caution
Swallowing engine coolant can cause poisoning.
Do not swallow engine coolant.
Keep out of reach from children and pets.
Checking the Radiator Coolant
Check the cooling system level daily.
Fluid Type: 50/50 mix of extended life
antifreeze/Dex–Cool r and water
Cooling System Capacity: 128 oz. (3.8 l)
Note: Do not open the radiator cap. Doing this may
induce air into the cooling system.
1. Position the machine on a level surface, stop the
engine, and set the parking brake.
2. Unlatch the seat, tilt the seat up and tilt the engine
hood forward.
3. With the engine cool, check the overflow bottle level.
The fluid needs to be up to the bump on the outside of
the overflow bottle (Fig. 44).
4. If the coolant level is low, add a 50/50 mix of extended
life antifreeze/Dex–Coolr and water to the overflow
bottle (Fig. 44).
5. Add the 50/50 coolant mix to the overflow bottle and
fill it to the indicator line on the bottle (Fig. 44).
1
2
4
Figure 44
1. Radiator cap
2. Antifreeze overflow bottle
3. Radiator core and screen
3
m–6889
4. Indicator line on side of
overflow bottle
37
Cleaning the Cooling System
Clean the cooling system daily before each use.
1. Position the machine on a level surface, stop the
engine, and set the parking brake.
Important
Before starting the engine, clean grass from
the pump drive belt compartment. Check more often in
dry conditions.
2. Unlatch the seat, tilt the seat up and raise the rubber
flap above the drive belt compartment.
3. Remove debris from the drive belt compartment and
hydraulic pumps.
4. Remove debris from the screen on the engine cover.
5. Tilt the engine cover forward.
6. Remove debris from the radiator core and engine
(Fig. 44).
Important Do not damage the radiator cooling fins.
7. Inspect the seals on the engine cover and replace them
if needed.
8. Close the engine cover and tilt the seat back.
Changing the Engine Coolant
Change the engine coolant every 4 years.
Contact an Authorized Service Dealer for changing the
coolant.

Servicing the Spark Plug

Check the spark plug(s) after every 100 operating hours.
Make sure that 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 BPR2ES (or equivalent)
Air Gap: 0.030 inch (0.76 mm)
Removing the Spark Plug
1. Disengage the power take off (PTO) and stop the
engine. Move the levers to the neutral locked position
and apply the parking brake. Remove the key.
2. Clean around the spark plug(s) to prevent dirt from
falling into the engine and potentially causing damage.
Pull the wire(s) off of the spark plug(s) (Fig. 45).
3. Remove the spark plug(s) and metal washer.
(s)