14
Figure 17
NOTE:
When tipping the unit, empty the fuel tank and
keep the spark plug side of the engine up. Never tip the
mower more than 90 degrees and do not leave the
mower tipped for any length of time. Oil can drain into
the upper part of the engine causing a starting problem.
Engine
Refer to the accompanying engine manual for all
engine maintenance instructions. A list of general
recommendations are given below.
•
Maintain engine oil as instructed in the separate
engine manual packed with your unit.
•
Service air cleaner every 25 hours under normal
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.
•
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.
•
Clean the engine regularly with a cloth or brush.
Keep the cooling system (blower housing area)
clean to permit proper air circulation. Remove all
grass, dirt, and debris from muffler area.
Cutting Deck
•
The underside of the mower deck should be
cleaned after each use to prevent build-up of grass
clippings, leaves, dirt, or other matter. If this debris
is allowed to accumulate, it will invite rust and
corrosion, and hinder performance. Disconnect the
spark plug, tilt the mower and scrape clean with a
suitable tool.
IMPORTANT:
We do not recommend the use of a
pressure washer or garden hose to clean your unit. The
use of water will shorten life of the mower and reduce
serviceability.
Blade Replacement & Sharpening
WARNING:
When removing the cutting
blade for sharpening or replacement, protect
your hands by using heavy gloves or a rag to
grasp the cutting blade.
•
Remove the bolt and the blade bell support which
hold the blade and the blade adapter to the engine
crankshaft. See Figure 18.
•
Remove the blade and the adapter from the
crankshaft.
WARNING:
Periodically inspect the blade
adapter for cracks, especially if you strike a
foreign object. Replace when necessary.
Figure 18
•
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.
IMPORTANT:
An unbalanced blade will cause excessive
vibration when rotating at high speeds. It may cause
damage to the mower, and could break causing
personal injury.
•
The blade can be tested by balancing it on a round
shaft screwdriver. Remove metal from the heavy
side until it balances evenly. It is recommended that
the blade always be removed from the adapter
when testing for balance.
•
Before reinstalling the blade and the blade adapter
to the unit, lubricate the engine crankshaft and the
inner surface of the blade adapter with light oil.
•
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.
•
Slide the blade adapter onto the engine crankshaft.
•
Place the blade on the adapter. Be certain the
blade is aligned and seated on the blade adapter
flanges.
•
Place blade bell support on blade. Make sure the
notches on the blade bell support are aligned with
small holes in the blade.
Lubricate
Blade
Hex Bolt
Blade Bell
Adapter
Support
Summary of Contents for S621 SS
Page 22: ...22 Safety Decorative Labels ...
Page 23: ...23 YOUR NOTES Comments Date ...
