Filter
Top Products
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.
NOTE
It is recommended that the blade
always be removed from the adapter
for the best test of balance.
AIR CLEAN ER
Under normal operating conditions, the air
cleaner, located on top of the carburetor, must be
serviced after every ten hours of use. Under ex-
tremely dusty operating conditions, the air
cleaner must be serviced after every hour of
operation. To service the air cleaner, refer to the
separate engine manual packed with your unit.
CLEANING ENGINE AND BLADE HOUSING
Any fuel or oil spilled on the machine should be
wiped off promptly. Grass, leaves, and other dirt
must not be left to accumulate around the cooling
fins of the engine or on any part of the machine.
Clean the underside of the blade housing after
each mowing.
SPARK PLUG
The spark plug should be cleaned and the gap
reset once a season. Spark plug replacement is
recommended at the start of each mowing
season; check engine manual for correct plug
type and gap specification.
CUTTING BLADE
A. Removal for Sharpening or Replacement
t WARNING:
.~ Be sure to disconnect and ground
the spark plug wire and remove
ignition key before working on the
cutting blade to prevent accidentalengine
starting.
C.
Reassembly
Before reassembling the blade and the blade
adapter to the unit, lubricate the spindle and the
inner surface of the blade adapter with light oil.
Lubricating the bolt holes, bolts and inner surface
of the nuts with light oil is also recommended, A 4
oz. plastic bottle of light oil lubricant is available.
Order part number 737-0170. Engine oil may also
be used.
When replacing the blade, be sure to install the
blade with the side of the blade marked "Bottom"
(or with part number) facing the ground when the
mower is in the operating position. Make certain
key is in place on the crankshaft.
Blade Mounting Torque
3/8" Dia, Bolt 375 in. lb. min., 450 in, lb. max,
5/16" Dia. Bolt 150 in. lb. min., 250 in. lb. max.
To insure safe operation of your unit, ALL nuts
and bolts must be checked periodically for correct
tightness.
FUEL FILTER
Your unit is equipped with a replaceable in-line
fuel filter. Replace filter whenever contamination
or discoloration is noticed. Order replacement
filter through your engine authorized service
dealer,
BELT REMOVAL AN D REPLACEM ENT
1. Remove the large bolt and lock washer which
holds the blade and adapter to the blade spin-
dle.2.
Remove the blade and adapter from the spin-
dle. Be careful not to lose the key on the spin-
dle.3.
If the blade or blade adapter needs replacing,
remove the two small bolts, lock washers and
nuts which hold the blade to the adapter.
Disconnect the spark plug wire and
ground it against the engine.
Figures 24 throlAgh 28 are shown
with the unit tipped up for clarity.
It is not necessary to tip the unit
to remove the belts.
B. Sharpening
Remove the cutting blade by following the direc-
tions of the preceding section.
When sharpening the blade, follow the original
angle of grind as a guide. It is extremely important
that each cutting edge receives an equal amount
of grinding to prevent an unbalanced blade. An un-
balanced blade will cause excessive vibration
when rotating at high speeds, may cause damage
to the mower and could break, causing personal
injury.
Removing the Deck Belt
1. Place the lift lever in the disengaged position.
2. Remove the two hex bolts (belt keepers) from
the engine pulley belt guard. See figure 24.
15