Craftsman 486.243292 Lawn Mower User Manual


 
15
BLADE CARE
For best results, mower blade must be kept sharp.
The blades can be sharpened with a few strokes of
a file or on a grinding wheel. Do not attempt to
sharpen blades while blades are on mower.
To remove blade for sharpening, use wooden block
to hold blade while removing the blade mounting
nut. The nuts have right hand threads. (See Fig. 7.)
CAUTION: Do not handle mower blades
with bare hands. Careless or improper
handling may result in serious injury.
When grinding, take care to maintain blade balance.
Check blade for proper balance before reinstalling
to mower.
To check and balance blade use a balancing
machine or, fixture as shown in figure 8. File mate-
rial off heavier end of blade until it is balanced.
To assure satisfactory operation, we recommend that
you discard old blades and replace them with new ones
before the start of each mowing season.
NOTE: Check nuts and blades occasionally to make
sure nuts are tight.
CAUTION: Shut off mower engine and
remove spark plug wire from spark plug
before making any adjustments or repairs
to mower.
CLEANING THE MOWER
CAUTION: Disconnect spark plug wire
from spark plug before working on under-
side of mower.
Clean the underside of your mower to remove build-
up of grass clippings.
Clean any gasoline, oil, or foreign matter from
engine, painted surfaces and wheels.
We do not recommend using a garden hose to
clean mower unless the electrical system, muffler,
air filter and carburetor are covered to keep water
out. Water in engine can result in shortening engine
life.