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Servicing the Spark Plug
Install a new spark plug after every 100 operating hours.
Check the spark plug after every 25 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 and a
gapping tool/feeler gauge to check and adjust the air gap.
Type: Champion RJ-19LM (or equivalent)
Air Gap: 0.030 in. (0.762 mm)
Removing the Spark Plug
1. Disengage the PTO, set the parking brake, stop the
engine, and remove the ignition key.
2. Reach under the body of the tractor above the left rear
wheel and pull the wire off of the spark plug (Fig. 23).
Clean around the spark plug to prevent dirt from falling
into the engine and potentially causing damage.
3. Remove the spark plug and metal washer.
1
Figure 23
1. Spark plug wire
Checking the Spark Plug
1. Look at the center of the spark plug (Fig. 24). If you see
light brown or gray on the insulator, the engine is
operating properly. A black coating on the insulator
usually means the air cleaner is dirty.
Important
Never clean the spark plug. Always replace
the 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. 24). Bend the side electrode (Fig. 24) if the gap is
not correct.
2
m–1884
2. Spark plug
25
2
1
Figure 24
1. Center electrode insulator
2. Side electrode
Installing the Spark Plug
1. Install the spark plug and metal washer. Make sure that
the air gap is set correctly.
2. Tighten the spark plug to 15 ft.-lb. (20 N m).
3. Push the wire onto the spark plug (Fig. 23).
Checking the Tire Pressure
Maintain the air pressure in the front tires at 150 kPa and in
the rear ties at 200 kPa. Check the tire pressure after each
use. Check the tires when they are cold to get the most
accurate pressure reading.
Greasing and Lubrication
Grease the machine after every 25 operating hours or once
a year, whichever occurs first. Grease more frequently
when operating conditions are extremely dusty or sandy.
Grease Type: General-purpose grease
1. Disengage the PTO, set the parking brake, stop the
engine, and remove the ignition key.
2. Lubricate the front wheels.
3. Wipe up any excess grease.
Checking the Parking Brake
Always set the parking brake when you stop the machine or
leave it unattended. Check the parking brake daily to ensure
that it holds securely.
1. Park the machine on a level surface, disengage the PTO,
set the parking brake, stop the engine, and remove the
ignition key.
3
0.030 in.
(0.762 mm)
m–1870
3. Air gap (not to scale)
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