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MTD 131-498A Owner's Manual page 17

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REPLACING BLADE
( WARNING {
Before beginning work on the cutter
blade, remove the spark plug from
the cylinder.
Removing and Sharpening Blades. Remove the
center bolt and lock washer. See figure 33. Pull
the blade and blade adapter from the blade spin¬
dle.
The adapter can be removed from the blade by
removing the two adapter bolts, lock washers and
nuts.
To insure safe operation of your
unit, ALL nuts and bolts must be
checked
periodically for correct
tightness.
BELT REMOVAL AND REPLACEMENT
Preparation
<£>
( WARNING }
Disconnect the spark plug wire and
ground it against the engine.
1. Remove the battery.
CAUTION
Disconnect the negative terminal
first and connect last when in¬
stalling the battery.
2. To prevent gasoline from leaking from the
engine, remove the gasoline cap, place a
piece of thin plastic over the neck of the
gasoline tank and screw on the cap.
3. Close the fuel shut-off valve.
4. Set the brake and lock it.
5. Lift the front end of the rider up and rest it on
the rear wheels. It will balance in this position.
6. Secure with rope to prevent tipping.
\7. Do not leave the rider in this position any
longer than necessary as oil may get into the
cylinder head. If this happens, remove the
spark plug and crank over the engine to clear
the oil.
Removing the Deck Belt
1. Place the lift lever in the disengaged position.
2. Remove the belt keeper and large bolt from
the engine pulley. See figure 34.
FIGURE 34.
3. Unhook the deck belt from the engine pulley.
4. Place the lift lever in the engaged position.
5. Remove the two deck tension springs. See
figure 35.
6. Remove the cotterpins holding the four front
deck links. The deck can now be tipped for¬
ward. See figure 35,
7. Remove the belt guard on the left deck pulley
by removing the two bolts and nuts.
8. Remove the three shoulder bolts and washers
next to the right deck pulley.
17

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