Adjusting The Steering Pump Belt; Changing The Spark Plugs - Toro 41106 Operator's Manual

Adjusting the Steering Pump
Belt
Check the tension of the steering pump belt after the first
day of operation and every 100 operating hours thereafter.
The belt should flex 1/4 inch (5 mm) when 5 lb of force
(22 N) is applied midway on the top span.
1. Park the machine on a level surface, set the parking
brake, turn the ignition off, and remove the key.
2. Loosen the steering pump mounting bolts (Fig. 51).
1
2
Figure 51
1. Steering pump belt
2. Steering pump
3. Move the pump until the belt flexes 1/4 inch (5 mm)
with 5 lb. of force (22 N) then tighten the mounting
bolts, starting with the bolt closest to the engine
crankshaft.

Changing the Spark Plugs

Change the spark plugs after every 200 operating hours.
Make sure 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.
Type: Champion RC-12YC (or equivalent)
Air Gap: 0.030 inch (0.76 mm)
Removing the Spark Plug
1. Set the parking brake, stop the pump, stop the engine,
and remove the ignition key.
2. Release the latch on the back of the seat and lift the seat
forward.
3
3. Steering pump mounting
bolts
36
3. Pull the wires off the spark plugs (Fig. 52).
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.
2
1
Figure 52
1. Spark plug wire
Checking the Spark Plugs
1. Look at the center of the spark plugs (Fig. 53).
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 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
(Fig. 53) and bend the side electrode, if the gap is not
correct.
2
1
Figure 53
1. Center electrode insulator
2. Side electrode
m–3246
2. Spark plug
3
0.030 inch
(0.76 mm)
m–3215
3. Air gap (not to scale)