Toro 30318 - Engine and Fuel System Maintenance; Check and Install Spark Plugs; Drain Fuel Tank

Figure 38
1. Spark plug wire 2. Spark plug
Checking the Spark Plug
1. Look at the center of the spark plug(s)
( Figure 39 ). If y ou see light bro wn or g ra y on
the insulator , the engine is operating properly .
A blac k coating on the insulator usually means
the air cleaner is dir ty .
Important: Nev er clean the spar k
plug(s). Al w ays r eplace the spar k plug(s)
when it has: a black coating , w or n
electr odes, an oil y film, or cracks.
Figure 39
1. Center electrode insulator
3. Air gap (not to scale)
2. Side electrode
2. Chec k the g ap betw een the center and side
electrodes ( Figure 39 ). Bend the side electrode
if the g ap is not cor rect.
Installing the Spark Plug(s)
1. Install the spark plug(s) and metal w asher .
Mak e sure the air g ap is set cor rectly .
2. Tighten the spark plug(s) to 30 ft-lb (41 N·m).
3. Push the wire(s) onto the spark plug(s)
( Figure 38 ).
Fuel System
Maintenance
Draining the Fuel Tank
In cer tain conditions, gasoline is extr emel y
flamma ble and highl y explosi v e. A fir e or
explosion fr om gasoline can bur n y ou and
other s and can dama ge pr oper ty .
• Drain gasoline fr om the fuel tank when
the engine is cold. Do this outdoor s in
an open ar ea. W ipe up an y gasoline that
spills.
• Nev er smok e when draining gasoline,
and stay a w ay fr om an open flame or
wher e a spar k may ignite the gasoline
fumes.
1. P ark the mac hine on a lev el surface , to assure
fuel tank drains completely . T hen diseng ag e
the po w er tak e off (PTO), set the parking
brak e , and tur n the ignition k ey to of f . R emo v e
the k ey .
2. Close the fuel shut-off v alv e at the fuel tank
( Figure 40 ).
3. Squeeze the ends of the hose clamp tog ether
and slide it up the fuel line a w a y from fuel filter
( Figure 40 ).
4. Pull the fuel line off the fuel filter ( Figure 40 ).
Open the fuel shut-off v alv e and allo w the
g asoline to drain into a g as can or drain pan.
Note: No w is the best time to install a new
fuel filter because the fuel tank is empty . R efer
to R e placing the Fuel Filter .
5. Install the fuel line onto the fuel filter . Slide
the hose clamp close to the v alv e to secure the
fuel line .
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