21
MAINTENANCE
DRAINING GASOLINE FROM FUEL TANK
Since gasoline is highly flammable, drain it
outdoors and make sure engine is cool to preĆ
vent a potential fire hazard. Wipe up any gasoĆ
line that may have spilled. Do not drain gasoĆ
line near any open flame or where gasoline
fumes may be ignited by a spark. Do not
smoke a cigar, cigarette, or a pipe when hanĆ
dling gasoline.
CAUTION
IMPORTANT: When the rider is tipped, all gasoĆ
line must be drained from the fuel tank.
1. Clean around fuel tank cap so foreign matter
cannot enter filler hole when cap is removed. Next,
remove cap from fuel tank (Fig. 13).
Figure 13
m-3856
1
2. Using a pumpĆtype syphon, drain gasoline into a
clean gas can.
Note: There is no other recommended way to drain
gasoline from the fuel tank, other than by using a
pumpĆtype syphon. An inexpensive syphon can be
purchased at a hardware store.
REPLACING SPARK PLUG
Since air gap between center and side electrodes of
the spark plug increased gradually during normal
operation of the engine, check condition of elecĆ
trodes after every 25 operating hours. RecomĆ
mended air gap is 0.030 of an inch (0.762 mm). CorĆ
rect spark plug to use:
Champion RJĆ19LM
Note: The spark plug usually lasts a long time; howĆ
ever, the plug should be removed and checked
whenever the engine malfunctions.
1. Clean area around spark plug so foreign matter
cannot fall into cylinder when spark plug is removed.
2. Pull wire off spark plug and remove plug from
cylinder head.
3. Check condition of side electrode, center elecĆ
trode, and center electrode insulator to ensure there
is no damage.
IMPORTANT: A cracked, fouled, dirty or defective
spark plug must be replaced. Do not sand blast,
scrape, or clean electrodes by using a wire brush
because grit may eventually release from the plug
and fall into the cylinder. The result is usually a
damaged engine.
4. Set air gap between center and side electrodes
at 0.030 of an inch (0.762 mm) (Fig. 14). Install corĆ
rectly gapped spark plug w/gasket seal, and tighten
plug to 15 ftĆlb (20.4 N.m). If a torque wrench is not
used, tighten plug firmly.
0.030"
(0.762 mm)
Figure 14
110
5. Push wire onto spark plug but do not leave key
in the ignition. This will prevent accidental starting
when mower is being stored between use periods.
Keep key in a memorable place so it is not lost.
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