Wheel Does Not Touch Ground; Service Dealer's Guide To Great Quality Of Cut I; Adjusting Side-To-Side Level; Adjusting Front-To-Rear Pitch - Toro 20351 - High Wheel CARB Walk Power Mower Dealer Manual

Checking and Adjusting the Blade Level
Figure 22

Wheel Does Not Touch Ground

If one of the wheels does not touch the ground on a
level surface, verify that all four spring arms are in the
same notch and that those notches are not worn. Make
any necessary adjustments (for correcting worn
notches, see "Slipping Height of Cut Adjuster" on page
4-5).
If the spring arms are in the same notch and the
notches are not worn, and the wheel that does not
touch the ground is 1/8 inch (3.1mm) or less above the
ground, you can correct the problem by lowering one of
the front wheels. Remove the front wheel that is on the
ground and its pivot arm. Use a round file to elongate
the pivot bolt holes upward (Figure 23).
Caution
!
The aluminum alloy on cast decks files away
quickly. Be careful not to elongate the pivot bolt
hole excessively.
Figure 23
4 - 6
Reinstall the pivot and wheel. When you reinstall the
wheel, use the extra clearance to raise it to the position
of the other front wheel. After reinstalling the wheel and
pivot, verify that the blade is level side-to-side.

Adjusting Side-to-Side Level

If the blade is not level within 1/8 inch (3.1mm) side to
side, the engine will need to be shimmed. Loosen the
engine mounting screws on the low side of the blade.
Slip a washer or other shim material between the
engine and housing (Figure 24). On a 21-inch mower,
use a shim about half as thick as the distance to be
shimmed. For instance, if the blade is off 1/8 inch
(3.1mm), use a 1/16 inch (1.5mm) shim. Re-measure
2001-065.TIF
the blade. If the blade is within 1/8 inch of being level
from side to side, remove the engine mounting screw
and reinstall it through the housing, shim, and engine.
!

Adjusting Front-to-Rear Pitch

Correction of front-to-rear pitch on a walk behind
mower is rarely necessary. If the blade pitch is
significantly out of specification, it is best to replace the
mower housing.
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Service Dealer's Guide to Great Quality of Cut
Figure 24
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