Important: Nev er clean the spar k plugs.
Al w ays r eplace the spar k plugs when they
ha v e a black coating , w or n electr odes, an
oil y film, or cracks.
Figure 32
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 32 ).
3. Bend the side electrode ( Figure 32 ) if the g ap
is not cor rect.
Installing the Spark Plugs
1. T hread the spark plugs into the spark plug
holes .
2. Tighten the spark plugs to 20 ft-lb (27 N ⋅ m).
3. Push the wires onto the spark plugs ( Figure 31 ).
4. Close the hood.
Fuel System
Maintenance
Changing the Fuel Filter
Chang e the fuel filter after ev er y 200 operating
hours or yearly , whic hev er occurs first.
1. Lo w er the loader ar ms , stop the engine , and
remo v e the k ey .
2. Open the hood and remo v e the left side screen.
3. Loosen the tank cap to reliev e pressure .
4. Clamp the fuel lines on both sides of the fuel
filter ( Figure 33 ).
Figure 33
1. Filter 2. Hose clamp
5. Squeeze the ends of the hose clamps tog ether
and slide them a w a y from the filter ( Figure 33 ).
6. Place a drain pan under the fuel lines to catc h
any leaks , then remo v e the filter from the fuel
lines .
7. Slide the fuel lines on the new fuel filter
fittings , ensuring that the ar ro w on the filter
points a w a y from the fuel line coming from
the fuel tank and to w ard the line g oing to the
fuel pump .
Important: Nev er install a dir ty filter .
8. Mo v e the hose clamps close to the filter .
9. R emo v e the clamp bloc king fuel flo w and open
the fuel v alv es .
10. Secure the tank cap .
11. R e place the side screen and close the hood.
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.
31
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