Blade Mounting - MTD 310 series Owner's Manual

1.Insert s crew driverthrough hole
2.Blade should beparallel toground
Screw
DriveP-\ Blade
?o ol
................. i,ll i i ii i ill
Ground
Figure 19
• Test the blade by balancing it on a round shaft
screwdriver or a blade balancer. See figure 18.
We recommend using the Arnold blade
balancer (part # SBB-102) available at your
local dealer.
• If the blade is not balanced, remove metal from
the heavy side until it balances evenly. We
recommend that the blade be always removed
from the adapter for the best test of balance.
• 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 (or engine oil). Also
lubricate the bolt holes, bolts and inner surface
of the nuts.
REPLACING BLADE
Blade Adapter
_ Blade
Blade Bell
Hex Bolt -- Support
Figure 20
• Install the blade adapter on the crankshaft with
the "star" away from the engine. See figure 20.
° Place the blade on the blade adaptor aligning
the star in the blade with the star on adaptor.
The side of the blade marked with the part
number or bottom should be facing towards the
ground.
• Place the blade bell support against the blade
aligning the tabs of the bell support with the
holes of the blade. Insert the hex bolt through
the assembly. Refer to figure 20.
° Tighten the hex bolt according to the blade
mounting torque mentioned below.
BLADE MOUNTING TORQUE
Center Bolt: 450 in. Ibs. rain., 600 in. Ibs. max.;
DECK
Clean the underside of the mower deck after each use
to prevent a buildup of grass clippings, leaves, dirt or
other matter.
NOTE:
If this debris is allowed to accumulate, it will
invite rust and corrosion, and may cause an uneven
discharge of grass clippings at the next cutting.
• Disconnect the spark plug.
• Clean the deck by tilting the mower and
scraping with a suitable tool.
ENGINE
Refer to the separate engine manual for engine
maintenance instructions.
• Maintain engine oil as instructed in the separate
engine manual provided with your unit. Read
and follow instructions on changing oil carefully.
• Service air cleaner every 25 hours under
normal conditions. Clean every few hours under
extremely dusty conditions. Poor engine
performance and flooding usually indicate that
the air cleaner should be serviced. To service
the air cleaner, refer to the separate engine
manual packed with your unit.
• Replace the spark plug at the start of each
mowing season. Check engine manual for
correct plug type and gap specifications.Clean
the spark plug and reset the gap once a season.
° Clean the engine regularly with a cloth or brush.
• Keep the cooling system (blower housing area)
clean to permit proper air circulation which is
essential to engine performance and life.
° Be certain to remove all grass, dirt and
combustible debris from muffler area.
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