MTD 21AA404B031 Operator's Manual page 21

6. Remove the hex bolt securing the transmission drive
pulley, then remove the pulley along with the two belts.
See Fig. 8-5.
7. Replace the old belts with the new belts in the same order
they were removed. The longer belt (754-04091) belongs
closer to the engine, with the shorter belt (754-04090)
positioned closer to the tines.
8. Reinstall the transmission drive pulley with the new belts.
9. Reassemble the tiller in the reverse order in which it was
disassembled.
IMPORTANT: When reinstalling the belt cover, be sure to
engage the bail and hold it so that the drive belt is tight before
attempting to reinstall the belt cover. This will enable the belt to
fall under the belt keeping mechanism built into the belt cover.
Failure to do so could damage the belt and/or belt cover.
Tines
The tines will wear with use and should be inspected at the
beginning of each tilling season and after every 30 operating
hours. The tines can be replaced. Refer to the Illustrated Parts List
manual for part numbers and ordering instructions.
Tineinspection
With use,the tines will become shorter, narrower and pointed.
Badly worn tines will result in a loss of tilling depth, and reduced
effectiveness when chopping up and turning under organic
matter.
Refer to Fig. 8-6 for the following steps procedures.
Rem0ving/Installing a TineAssembly:
1. Remove the tine shield end covers and side shields by
removing the three wing nuts on each side that secure
them.
2.
3.
4.
5.
A tine assembly consists of a left hand tine assembly and a
rigth hand tine assembly.
Note:The tine assembly moves in a counter-rotating
motion with the sharp edges of the tines positioned to
enter the soil first when counter-rotating. Note this position
of the tines for reinstallation of the new tine assemblies.
To remove a tine assembly, simply remove the internal
cotter pin securing the clevis pin as seen in Fig. 8-6.
Remove the clevis pin and slide the assembly to the outside
of the unit and off of the tine shaft.
Before reinstalling the tine assembly, inspect the tine
shaft for rust, rough spots or burrs. Lightly file or sand, as
needed. Apply a thin coat of grease to the shaft.
Install each tine assembly so that the cutting (sharp) edge
of the tines will enter the soil first when the tiller moves
forward. Keep in mind that these tines are counter rotating
so Secure the tine assembly to the tine shaft using the
clevis pin and internal cotter pin.
Remove hex bolt
Y
Remove pulley "_
with belts
/
Figure 8-5
Figure 8-6
ChangeTransmission GearOil
NOTE:The transmission gear oil does not need to be changed
unless it has been contaminated with dirt, sand or metal
particles.
Seean authorized service dealer to have the transmission gear oil
changed. Refer to the phone numbers on page 2 of this manual
to locate the nearest service dealer.
SECTION 7 -- SERVICE 21