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Craftsman 917.378770 Manual Del Usuario página 11

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Idiomas disponibles

Idiomas disponibles

PRODUCT
SPECIFICATIONS
Serial number:
Date of purchase:
Gasoline
capacity/type:
1.6 quarts (unleaded
regular)
Oil type (API-SF-SJ):
SAE 30 (above 32°F); SAE 5W-30
(below 32°F)
Oil capacity:
20 ounces
Spark plug (gap: .020")
Champion
RC12YC
Blade bolt torque:
35-40 ft. Ibs.
• The model and serial numbers will be found on a decal on the rear of the mower
housing.
Record both serial number and date of purchase in space provided above.
LAWN MOWER
Always observe safety rules when perform-
ing any maintenance.
TIRES
• Keep tires free of gasoline, oil, or insect
control chemicals which can harm rubber.
• Avoid stumps, stones, deep ruts, sharp
objects and other hazards that may cause
tire damage.
BLADE CARE
For best results, mower blade must be
kept sharp. Replace bent or damaged
blades.
TO REMOVE
BLADE
1. Disconnect
spark plug wire from spark
plug and place wire where
it cannot
come in contact with spark plug.
2. Turn lawn mower on its side. Make
sure air filter and carburetor
are up.
3. Use a wood block between
blade and
mower
housing
to prevent
blade from
turning
when
removing
blade bolt.
NOTE:
Protect your hands with gloves
and/or wrap blade with heavy cloth.
4.
Remove
blade bolt by turning
counter-
clockwise.
5.
Remove
blade and attaching
hard-
ware (bolt, lock washer
and hardened
washer).
NOTE:
Remove
the blade adapter
and
check the key inside hub of blade
adapter. The key must be in good condi-
tion to work properly.
Replace
adapter
if
damaged.
TO REPLACE
BLADE
1. Position the blade adapter
on the
engine crankshaft.
Be sure key in
adapter
and crankshaft
keyway
are
aligned.
2.
Position
blade on the blade adapter
aligning
the two (2) holes
in the blade
with the raised
lugs on the adapter.
3.
Be sure the trailing
edge of blade
11
(opposite
sharp edge) is up toward
the engine.
4.
Install the blade bolt with the lock
washer and hardened
washer into
blade adapter and crankshaft.
5.
Use block of wood between blade and
lawn mower housing and tighten the
blade bolt, turning clockwise.
• The recommended
tightening torque is
35-40 ft. Ibs.
IMPORTANT:
Blade bolt is grade 8 heat
treated.
TO SHARPEN
BLADE
NOTE:
We do not recommend sharpen-
ing blade - but if you do, be sure the
blade is balanced.
Care should be taken to keep the blade
balanced.
An unbalanced
blade will
cause eventual
damage
to lawn mower
or engine.
• The blade can be sharpened
with a file
or on a grinding wheel. Do not attempt
to sharpen while on the mower.
• To check blade balance, drive a nail
into a beam or wall. Leave about one
inch of the straight nail exposed. Place
center hole of blade over the head of
the nail. If blade is balanced,
it should
remain
in a horizontal
position.
If either
end of the blade moves downward,
sharpen
the heavy end until the blade
is balanced.
Blade
Crankshaft
/ keyway
Blade
i\
;rank
Blade
J-S:'/
shaft
bolt
washer
Trailing edge
Blade adapter

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