MTD Pro 460 Series 21 Inch Rotary Lawn Mower Owners Manual

5
Maintenance
Figure 12
4.
5.
Remove blade and adapter from the crankshaft.
Figure 13
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.
Rear Flap Replacement
WARNING
The rear flap is attached to the back of the mower deck,
and is designed to minimize the possibility  that objects
will be thrown from the rear of the mower toward the
operator. If the rear flap becomes damaged, replace  as
follows.
When removing
the cutting blade
for sharpening or
replacement, protect
your hands with a
pair of heavy gloves
or use a heavy rag to
hold the blade.
6.
It is extremely important  that each cutting edge
receives an equal amount of grinding to prevent an
unbalanced blade.
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.
1.  To remove the old rear flap, lift  rear door, and press
flap in on either side to remove from hole.  See Figure
13.
2.
Remove flap from opposite hole and replace with new
flap following these steps in reverse order.
NOTE: Always remove blade from the adapter for testing
Off-Season Storage
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.
balance.
The following steps should be taken to prepare your lawn
7.
8.
9.
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.
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.
mower for storage.
1
.  Cthelealubricationn and lubriinstructions.cate  mower thoroughly as described in
2
.  oWregadrodneonthroesceomtomcelenadnthyeouursuenoitf.a  pressure washer
3.
4.
Refer to engine manual for correct engine
Install the blade adapter on the crankshaft with  the
“star” away from the engine. See Figure 12. 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.
storage instructions.
Coat mower’s cutting blade with chassis grease  to
prevent rusting.
5.  Store mower in a dry, clean area. Do not store next to
corrosive materials, such as fertilizer.
10.
Tighten the hex bolt to the torque listed below:
NOTE: When storing any type of power equipment  in
a poorly ventilated or metal storage shed, care should
be taken to rust-proof the equipment. Using a light oil or
silicone, coat the equipment, especially  cables and all
moving parts of your lawn mower before storage.
Blade Mounting Torque
Center Bolt 450 in. lb. min., 600 in.lb. max.
Cutting grass in sandy
soil condition causes
abrasive wear to the
blade.
To insure safe operation of your unit, ALL nuts and bolts
must be checked periodically for correct  tightness.
11
Product Specification
CategoriesLawn Mower Manual, MTD Lawn Mower Manuals
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- 28 pages
Document TypeOwner's Manual
LanguageEnglish
Product BrandMTD, Lawn Mower
Document File TypePDF
Publishermtdproducts.com
Wikipedia's PageMTD Products
CopyrightAttribution Non-commercial
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