Cylinder Cooling Fins - Toro 53002 Operator's Manual

Replace the spark plug (NGK BPM6Y) after
every 100 hours of operation.
Spark Plug Maintenance
Model 53010 & 53011
1. With the engine at ambient (room) temperature,
remove the socket head screw holding the
muffler cover, then remove the muffler cover
(Fig. 32).
2. Loosen the cylinder cover screw and lift off the
cylinder cover (Fig. 33).
3. Twist the high tension lead boot on the spark
plug back and forth a couple of times to loosen
the boot, then pull the boot off of the spark plug.
4. Remove the spark plug.
5. Clean the electrodes with a stiff brush (Fig. 34).
6. Adjust the electrode air gap to .024–.028 in.
(0.6–0.7mm) (Fig. 34).
7. Replace the spark plug if it is oil-fouled,
damaged, or if the electrodes are worn down.
8. Do not overtighten the spark plug when
installing. The tightening torque is 95–148 in.
lbs. (10.7–16.6 N m).
9. Reinstall the cylinder and muffler covers (Figs.
32 and 33).
Model 53002 & 53003
1. With the engine at ambient (room) temperature,
loosen the knob and remove the air cleaner cover
(Fig. 9).
2. Loosen the knob and lift off the cylinder cover
(Fig. 9).
3. Twist the high tension lead boot on the spark
plug back and forth a couple of times to loosen
the boot, then pull the boot off of the spark plug.
4. Remove the spark plug.
5. Clean the electrodes with a stiff brush (Fig. 34).
6. Adjust the electrode air gap to .024–.028 in.
(0.6–0.7mm) (Fig. 34).
7. Replace the spark plug if it is oil-fouled,
damaged, or if the electrodes are worn down.
8. Do not overtighten the spark plug when
installing. The tightening torque is 95–148 in.
lbs. (10.7–16.6 N m).
9. Reinstall the cylinder and air cleaner covers
(Fig. 9).

Cylinder Cooling Fins

Maintenance Interval
The cylinder cooling fins should be cleaned after
every 25 hours of operation, or once a week,
whichever comes first.
Air must flow freely around and through the cylinder
cooling fins to prevent engine overheating. Leaves,
grass, dirt and debris buildup on the fins will increase
the operating temperature of the engine, which can
reduce engine performance and shorten engine life.
Cooling Fin Cleaning
Model 53010 & 53011
1. With the engine cool (ambient or room
temperature), remove the socket head screw
holding the muffler cover, then remove the
muffler cover (Fig. 32).
2. Loosen the cylinder cover screw and remove the
cylinder cover (Fig. 33).
3. Clean all dirt and debris from the cooling fins
and from around the cylinder base.
4. Reinstall the cylinder cover and the muffler
cover (Figs 32 and 33).
Model 53002 & 53003
1. With the engine at ambient (room) temperature,
loosen the knob and remove the air cleaner cover
(Fig. 9).
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