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Fuse replacement, Belt replacement, Deck belt – MTD 13B-325-401 User Manual

Page 16

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SECTION 7: SERVICING YOUR RIDER MOWER

Fuse Replacement

The fuse is located next to the spark plug under the rear
frame. Fuses seldom fail without a reason. If the fuse
blows, the source problem must be corrected or the
new fuse will blow again.

Check for loose connections in the fuse holder and
replace holder if necessary. A dead short may be in
the cranking or charging circuit where insulation
may have rubbed through and exposed bare wire.

Replace the wire or repair with electrician’s tape if
the wire strands have not been damaged. Also look
for a wire pinched between body panels, burned by
the exhaust pipe or muffler, or rubbed against a
moving part.

Stop the rider mower and engage the parking
brake. Remove ignition key.

Pivot the hood assembly up. Disconnect the spark
plug wire and ground it.

Pull the fuse out of the lead wire.

Replace with new automotive fuse.

Make sure to reconnect the spark plug wire before
pivoting the hood assembly back.

Belt Replacement

There are two drive belts and one deck belt in your rider
mower; follow the description below to identify the belts.

1.

The lower drive belt goes from the variable speed
pulley to the transmission pulley.

2.

The upper drive belt goes from the variable speed
pulley to the upper sheave of engine pulley.

3.

The deck belt goes from the deck pulley to the
lower sheave in engine pulley.

Periodically check to see if these belts are too loose
or damaged through wear and tear. If so, replace
with new belt.

Deck Belt

Engage the parking brake and turn the ignition off.
Pivot the hood assembly up and remove the grass
catcher. Remove the spark plug wire.

Put the deck at the lowest cutting height by
adjusting the cutting height adjustment lever to the
lowest position.

Using a 1/2” socket wrench, remove two self-
tapping screws, lock washer and hex nut that hold
the deck belt cover to the deck. See Figure 16 .

For

this, you will have to work from the top left side of
the mower. Remove the belt cover.

Using a 9/16” wrench, loosen the hex nut on the
idler pulley. See Figure 16.

Figure 16

Remove belt from around deck pulley, idler pulley,
and the engine pulley.

Place the new belt around the deck pulley and the
engine pulley making sure that the belt is routed
inside the belt keepers. There are two belt keepers
under the grass catcher, one on the idler and the
other under the deck belt cover. See Figure 16.

Reinstall deck belt cover and secure with two self-
tapping screws, lock washer and hex nut.

NOTE: Belt keeper “A” must be mounted on the outside
of the belt.

Make sure to align the belt keeper in line with the
frame. See Figure 16.

NOTE: An imaginary line between the belt keeper and
idler pulley should be parallel to frame. See Figure 16.

Replace the grass catcher and pivot the hood
assembly back.

Lower Variable Speed Belt

Remove the rear deck belt guard following first five
steps for deck belt removal. Remove belt from the
engine pulley.

Push the spring loaded idler, located on the left side
of the transmission, to the right. Remove belt from
around the idler and then the transmission pulley.
See Figure 17 .

Deck

Deck Belt

Self-Tapping
Screw

Cover

Belt

Pulley

Idler
Pulley

Belt

Hex
Nut

Lock

Hex

Keeper

Keeper “A”

Imaginary

Line

Washer

Nut