Operation Manual

17
Servicing the Spark Plug
Check the spark plug after every 25 operating hours. Use a
Champion RJ19LM spark plug or equivalent.
1. Stop the engine and wait for all moving parts to stop.
2. Disconnect the wire from the spark plug (Fig. 7).
3. Clean around the spark plug and remove it from the
cylinder head.
Important Replace a cracked, fouled, or dirty spark
plug. Do not clean the electrodes because grit entering the
cylinder could damage the engine.
4. Set the gap on the new plug to 0.030 in. (0.76 mm)
(Fig. 19).
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Figure 19
1. 0.030 in. (0.76 mm)
5. Install the spark plug and the gasket seal.
6. Torque the spark plug to 15 ft-lb (20 Nm).
7. Connect the wire to the spark plug.
Adjusting the Self-propel Drive
Cable
Whenever you change the handle height, install a new
self-propel cable, or the traction drive belt slips, adjust the
self-propel drive cable.
1. Stop the engine and wait for all moving parts to stop.
2. Remove the cover.
3. Loosen the cable support nut (Fig. 20).
m-4205
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2
3
4
Figure 20
1. Cable jacket
2. Cable support
3. Nut
4. Upper handle
4. Push the drive bracket down until it contacts the lawn
mower, then hold it in place (Fig. 21).
m-4273
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2
Figure 21
1. Drive bracket 2. Push here
5. With the upper handle pushed back as far as possible
and while holding the drive bracket down, pull the cable
jacket down (toward the lawn mower) until there is no
slack in the cable (Fig. 20).
6. Tighten the nut on the cable support (Fig. 20).
7. Release the drive bracket.
8. Install the belt cover.
Lubricating the Wheels
After every 25 operating hours or at the end of the season,
lubricate the front and the rear wheels.
1. Apply 2 or 3 drops of light oil on the inside of the front
wheels and on the outside of all the wheel bolts.
2. Spin the wheels to distribute the oil into the bushings.
3. Wipe up any excess oil.
4. Move the rear wheel cutting height levers to the C
setting.
5. Wipe the grease fittings with a clean rag (Fig. 22).
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276
Figure 22
1. Grease fitting
6. Install a grease gun onto each fitting and gently apply 2
or 3 pumps of #2 multi-purpose lithium base grease.
Important Applying grease using excess pressure may
damage the seals.