MTD 450 Push Lawn Mower Owners Manual

7
Service
Blade Care
WARNING: An unbalanced blade will  cause
excessive vibration when rotating at high speeds.  It
may cause damage to mower and could break
causing personal injury.
WARNING: 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.
5.
Lubricate the engine crankshaft  and the inner surface of
the blade adapter with light oil. Slide  the blade adapter
onto the engine crankshaft.  Place the blade on the adapter
such that the side of the blade marked “Bottom”  (or with
part number) faces the ground when  the mower is in the
operating position. Make sure that the blade  is aligned and
seated on the blade adapter flanges.
Periodically inspect  the blade adapter for cracks, especially if you
strike a foreign object. Replace  when necessary. Follow the steps
below for blade service.
1
.
Disconnect spark plug boot  from spark plug. Turn mower
on its side making sure that the air filter  and the carburetor
are facing up.
6.
7.
Place blade bell support  on the blade. Align notches on the
blade bell support  with small holes in blade.
2
.
Remove the bolt and the blade bell  support which hold the
blade and the blade adapter to the engine  crankshaft. See
Fig. 7-1.
Replace hex bolt and tighten hex  bolt to torque: 450 in. lbs.
min., 600 in. lbs. max.
To ensure safe operation of your mower, periodically  check the
blade bolt for correct torque.
Off-Season Storage
The following steps should be  taken to prepare your lawn mower
for storage.
Clean and lubricate mower thoroughly as described  in the
lubrication instructions.
Do not use a pressure washer or garden hose to clean  your
unit.
Blade
Blade
Adapter
Coat mower’s cutting blade with chassis grease to prevent
rusting.
Refer to engine manual for correct  engine storage
instructions.
Store mower in a dry, clean area. Do not store next  to
corrosive materials, such as fertilizer.
Blade Bell
Support
Bolt
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.
Figure -1
3
4
.
.
Remove blade and adapter from the crankshaft.  See Fig.
7-1.
Remove blade from the adapter for testing  balance.
Balance the blade on a round shaft  screwdriver to check.
Remove metal from the heavy side  until it balances evenly.
When sharpening the blade, follow  the original angle of
grind. Grind each cutting edge  equally to keep the blade
balanced.
16
Product Specification
CategoriesLawn Mower Manual, MTD Lawn Mower Manuals
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- 40 pages
Document TypeOwner's Manual
LanguageEnglish
Product BrandMTD, Lawn Mower
Product TypeWalk Behind Mower
Document File TypePDF
Publishermtdproducts.com
Wikipedia's PageMTD Products
CopyrightAttribution Non-commercial
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