Carburetor Adjustment - MTD 660 Series Owner's Manual

WHEELADJUSTMENT
The caster (forward slant of the king pin) and the
camber (tilt of the wheels out at the top) require no
adjustment, Automotive steering principles have been
used to determine the caster and camber on the
tractor. The front wheels should toe-in 1/8 inch.
Some units have adjustable tie rods so the toe-in can
be adjusted. To adjust the toe-in on these units, pro-
ceed as follows.
1. Remove the hex nut and lock washer, and drop
the tie rod end from the wheel bracket. See figure
13.
2. Loosen the hex jam nut on tie rod.
3. Adjust the tie rod assembly for correct toe-in.
Tie
Rod
X
Bracket
Nut
Tie
End
\ Lock Washer
FIGURE 13.--Units with adjustable tie rods
Dimension "B" should be approximately 1/6" less than
Dimension "A" See figure 14.
A,) To increase Dimension "B," screw tie rod into tie
rod end.
B.) To decrease Dimension "B," unscrew tie rod from
tie rod end.
C.) Reassemble tie rod. Check dimensions. Readjust
if necessary.
I: A
__ Front
I' B
(1/8" LessThan A)
-I
$
.1
FIGURE 14.--Units with adjustable tie rods
CARBURETOR ADJUSTMENT
&
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 adjustment may be required to
compensate for differences in fuel, temperature,
altitude and load.To adjust the carburetor, refer to the
separate engine manual packed with your unit.
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.
BRAKE ADJUSTMENT (See figure 15)
The brake is located by the right rear wheel inside the
frame. During normal operation of this machine, the
brake is subject to wear and will require periodic
examination and adjustment.
WARNING: Do not have the run-
engine
ning when you adjust the brake.
To adjust the brake, adjust the nut so the brake starts
to engage when the brake lever is 1/4" to 5/16" away
from the axle housing.
FIGURE 15.
B
Lever
&
LUBRICATION
WARNING: Always stop engine and dis-
connect spark plug wire before cleaning,
lubricating or doing any kind of work on
lawn tractor.
13