679 MTD lawn tractor

User Manual - Page 15

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OPERATING THE CUTTING BLADES
The cutting blades may be engaged while the lawn
tractor is moving or standing still. DO NOT engage
the cutting blades abruptly as the sudden belt
tension on the pulley may cause the engine to stall.
WARNING: Keep feet and hands away
from the discharge opening, the blades or
any part of the deck. When the unit is
used for anything other than mowing
operations, the blade drive should be
disengaged.
Move the lift lever into the BLADES STOP position
to raise the deck and disengage the blades.
GRASS COLLECTOR AVAILABLE
Grass Collector Model 190-063-000 is available as
optional equipment for lawn tractors with 38" and
42" decks. Grass Collector Model 190-103-000 is
available for lawn tractors with 46" decks.
,_ WARNING: The mower should not be
operated without the entire grass catcher
or chute deflector in place.
NOTE: Under normal usage bag material is
subject to wear, and should be checked periodically.
Be sure to use only factory authorized replacement
bag.
SECTION 8: ADJUSTMENTS
,_ WARNING: Disconnect the spark plug
wires and ground against the engine
before performing any adjustments,
repairs or maintenance.
MANUAL ADJUSTMENT SEAT
To adjust the position of the seat, loosen the four
screws on the bottom of the seat. See Figure 4.
Slide the seat forward or backward as desired.
Retighten the four screws.
QUICK ADJUSTMENT SEAT
To adjust the position of the seat, move the seat
adjustment lever (located under the seat) to the left
and slide the seat forward or backwards. See Figure
15. Make sure seat is locked into one of the six
adjustment positions before operating the lawn
tractor.
/ Seat
Adjustment
Seat Lever
Figure 15
CARBURETOR ADJUSTMENTS
,_ WARNING: If any adjustments are
made to the engine while the engine is
running (e.g. carburetor), disengage all
clutches and blades. Keep clear of all
moving parts. Be careful of heated
surfaces and muffler.
Minor carburetor adjustments may be required
to compensate for differences in fuel,
temperature, altitude and load, Refer to separate
engine manual for carburetor adjustment
information,
NOTE: A dirty air cleaner will cause an engine to
run rough. Be certain air cleaner is clean and
attached to the carburetor before adjusting
carburetor.
DECK LEVELING ADJUSTMENT
If an uneven cut is obtained, the deck may be
leveled by following instructions in Assembly section.
15
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