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.
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.
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.
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.
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
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
or discoloration is noticed. Order replacement
filter through your engine authorized service dealer,
BELT REMOVAL AN D REPLACEM ENT
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.
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.
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CThe.
