MTD 790 Lawn Mower User Manual


 
11Section 3 — ASSembly & Set-Up
Tire Pressure
WARNING! Maximum tire pressure under any
circumstances is 30 psi. Equal tire pressure should be
maintained at all times. Never exceed the maximum
inflation pressure shown on the sidewall of the tire.
The recommended operating tire pressure is:
Approximately 10 psi for the rear tires
Approximately 14 psi for the front tires
IMPORTANT: Refer to the tire sidewall for exact tire
manufacturer’s recommended or maximum psi. Do not
overinflate. Uneven tire pressure could cause the cutting deck to
mow unevenly.
Gas and Oil Fill-up
The gasoline tank is located under the hood. Do not overfill.
WARNING! Use extreme care when handling
gasoline. Gasoline is extremely flammable and the
vapors are explosive. Never fuel machine indoors or
while the engine is hot or running. Extinguish
cigarettes, cigars, pipes, and other sources of ignition.
Service the engine with gasoline as instructed in the separate
Engine Operator/Owner Manual packed with your tractor. Read
the instructions carefully.
IMPORTANT: It is important to NOT top off your fuel tank
when filling with fuel. Leave an expansion area available inside
the fuel tank to allow for the fuel to expand and for proper
ventilation. Otherwise the unit may not run properly. Fill the tank
in accordance with Figure 3-6.
Figure 3-6
IMPORTANT: Your tractor is shipped with motor oil in the
engine. However, you MUST check the oil level before
operating. Be careful not to overfill.
Refer to the the separate Engine Operator/Owner Manual packed
with your tractor for instructions on checking, changing and
servicing the tractor with oil. Read the instructions carefully.
Setting the Deck Gauge Wheels (if so equipped)
Move the tractor on a firm and level surface, preferably
pavement, and proceed as follows:
1. Sele c t the height p osition of th e cut ting deck by p lacing the de ck
lift lever in the normally desired mowing height setting
(any of the six different cutting height notches on the right
fender).
2. Check th e gauge whe els for contac t or excessive clear ance with
the surface below. The deck gauge wheels should have
between ¼” and ½” clearance above the ground.
If the gauge wheels have excessive clearance or contact with the
surface, adjust as follows:
a. Raise the deck lift handle to its highest setting.
b. Remove the front and rear gauge wheels by removing
the lock nuts and shoulder screws which secure
them to the deck. See Figure 3-7.
Figure 3-7
c. Place the deck lift lever in the desired mowing height
setting.
d. Reinsert the shoulder screw (with each gauge wheel)
into the index hole that leaves approximately
½” between the bottom of the wheel and the
pavement.
Refer to Leveling the Deck in the Maintenance section of this
manual for more detailed instructions regarding various deck
adjustments.
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