Bolens 126-216-000 - Manual (Page 15)

B. Sharpening
Remove the cutting blade by following the directions
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 unbalanced blade will
cause excessive vibration when rotating at high speeds,
may cause damage to the mower and could break,
causing personal injury.
It is recommended that the blade always be removed
from the adapter for the best test of balance. The blade
can be tested by balancing it on a round shaft
screwdriver. Remove metal from the heavy side until
it balances evenly.
C. Reassembly
Before reassembling the blade and the blade adapter
to the unit, lubricate the engine crankshaft 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.
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.
DECK
The underside of mower deck should be cleaned after
each period of use as grass clippings, leaves, dirt and
other matter will accumulate. This accumulation of
grass clippings, etc., is undesirable as it will invite rust
and corrosion and may cause an uneven discharge of
grass clippings at the next cutting.
The deck may be cleaned by tilting the mower forward
or on its side and scraping clean with a suitable tool
or by washing with a stream of water from a garden
hose.
NOTE
Do not direct the stream of water at
a hot engine as damage to the
engine may result.
ENGINE OIL
Check oil level before starting engine and after every
5 hours of operation. ADD oil as necessary to keep level
to full mark on dipstick. Before removing dipstick, clean
area around dipstick to prevent dirt from entering oil
fill tube. Engine should be in a level position when
checking oil.
Change oil after first 5 hours of operation. Thereafter
change every 25 hours. Change oil while engine is
warm. Oil may be drained thru oil drain on bottom of
the engine. Oil capacity T-1/4 pints.
AIR CLEANER
Service air cleaner every 25 hours under normal con­
ditions. Clean every few hours under extremely dusty
conditions. Poor engine performance and flooding
usually indicates that the air cleaner should be
serviced.
To service the air cleaner, refer to the separate engine
manual packed with your unit.
SPARK PLUG
The spark plug should be cleaned and the gap reset
once a season. Spark plug replacement is recom­
mended at the start of each mowing season; check
engine manual for correct plug type and gap
specifications.
STORAGE OF THE BATTERY
The battery must be stored with a full charge. A
discharged battery will freeze.
IMPORTANT
All batteries discharge during storage.
Recharge battery every two months and before return­
ing to service. Refer to charging instructions on page
11
.
BELT REMOVAL AND REPLACEMENT
1. Disconnect the spark plug wire and ground it.
2. Remove the grass bag, discharge chute and
catcher panel. Refer to Assembly Instructions.
3. Remove the three screws which hold the belt guard
(and idler assembly). See figure 28.
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