5
2.
3.
Remove blade and adapter from the crankshaft.
The blade may be resharpened by removing it and
either grinding or filing the cutting edge keeping as
close to the original bevel as possible. Do not attempt
to sharpen the blade while it is still on the mower.
4.
It is extremely important that each cutting edge
receives an equal amount of grinding to prevent an
unbalanced blade.
Maintenance
NOTE: Improper blade balance will result in excessive
vibration causing eventual damage to the engine and
mower. Be sure to carefully balance blade after sharpen-
ing. Possible damage resulting from blade unbalance
condition is not the responsibility of the manufacturer.
NOTE:balance. Always remove blade from the adapter for testing
Figure 5-3
5.
The blade can be tested for balance by balancing it
on a round shaft screwdriver. Remove metal from the
heavy side until it balances evenly.
WARNING
When removing the
cutting blade or belt,
protect your hands
with a pair of heavy
gloves or use a heavy
rag to hold the blade.
6
Before reassembling the blade and the blade adapter
to the unit, lubricate the engine crankshaft and the
inner surface of the blade adapter with light oil.
7.
Install the blade adapter on the crankshaft with the
“star” away from the engine. See Figure 5-3. Place
the blade with the side marked “bottom” (or with part
number) facing away from the adapter. Align the blade
bell support over the blade with the tabs in the holes
of the blade and insert the hex bolt.
An unbalanced blade
will cause excessive
vibration when rotat-
ing at high speeds. It
may cause damage
to mower, and could
break causing per-
sonal injury.
8.
Tighten the hex bolt to the torque listed below:
Blade Mounting Torque
Center Bolt 450 in. lb. min., 600 in.lb. max.
To insure safe operation of your unit, ALL nuts and bolts
must be checked periodically for correct tightness.
Figure 5-4
Belt Care
1.
Remove two shoulder screws securing front drive
cover to mower deck. See Figure 5-4. Press inward on
sides of front drive cover and release tabs that secure
it to the height adjuster brackets. Remove drive cover
from mower.
2.
3.
4.
Loosen screw holding belt tension spring to transmis-
sion. See Figure 5-4 inset. Do not remove screw
completely. As you loosen it, tension on the belt will be
released.
Push transmission up a little and slide belt off the
transmission pulley. Lift mower to access belt from
underside of mower. Slide belt off of engine pulley and
around the blade. See Figure 5-5.
Replace with new belt, working around blade. Make
sure belt is firmly seated on engine pulley while pulling
from the other side and sliding it around the transmis-
sion pulley. Tighten screw loosened earlier to secure
belt tension spring to the transmission. Reassemble
front drive cover.
We do not recommend
the use of pressure
washers or garden
hose to clean your
unit. These may cause
damage to electrical
components, spindles,
pulleys, bearings, or
the engine. The use
of water will result in
shortened life and
Figure 5-5
reduce serviceability.
11
| Categories | Lawn Mower Manual, MTD Lawn Mower Manuals |
|---|---|
| Tags | MTD 460 |
| Download File |
|
| Document Type | Owner's Manual |
| Language | English |
| Product Brand | MTD, Lawn Mower |
| Product Type | Walk Behind Mower |
| Document File Type | |
| Publisher | mtdproducts.com |
| Wikipedia's Page | MTD Products |
| Copyright | Attribution Non-commercial |
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