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Adjusting the Mower Deck
Check the tire pressure before adjustment of the mower deck.
See Tire Pressures in Maintenance section. Faulty mower
deck adjustments will cause an uneven mowing result.
Leveling deck
Adjust the deck while the mower is on a level surface.
Make sure the tires are inflated to the correct pressure. See
Technical Data / Transmission. If tires are under or over
inflated, you cannot properly adjust your deck.
Four slots control the height and pitch of the mower deck. The
deck should be adjusted slightly higher in the rear.
NOTE: To insure accuracy of leveling procedure, mower deck
drive belt must be installed prior to leveling deck.
1. Wear heavy gloves. Turn each outer blade tip to align with
the deck side-to-side.
2. Measure from the floor surface up to the bottom of the
blade tip on the discharge side of the mower deck. Retain
this measurement. Move to the opposite side, check
that measurement is the same. If adjustment is required,
loosen the locknut and move mounting bolt up or down
in slot until both side-to-side measurements are equal.
Retain measurement.
3. Turn both outer blades to align with the deck in front-to-
rear manner. Reposition rear mounting bolts up or down
until rear of mower deck is positioned level to
1
/8" higher in
the rear than the side-to-side measurement.
4. Confirm measurements again. Blade tips should be level
side-to-side. In the rear, blade tips should be level to
1
/8" higher than side-to-side measurement. In the front,
blade tips should be level to
1
/8" lower than side-to-side
measurement.
NOTE: This will place the mower deck in a standard
measurement position. Depending on the type of grass being
mowed or environmental conditions, additional adjustments
may be required to achieve the desired cut.
CAUTION! Use protective glasses when cleaning
and washing.
ZT-3400 Powertrain
Regular external maintenance of the ZT-3400 Powertrain™
should include the following:
1. Check oil level in expansion tanks. When the engine is
cold, the tanks should be at the FULL COLD level.
2. Inspect the vehicle drive belt, idler pulley(s), and idler
spring(s). Insure that no belt slippage can occur. Slippage
can cause low input speed to the transmission.
3. Inspect the transmission cooling fan for broken or
bent blades. Remove any obstructions such as grass
clippings, leaves or dirt.
4. Inspect the park brake and vehicle linkage to insure
proper action and adjustment of the parking.
5. Inspect the vehicle control linkage to the directional
control arm on the transaxle. Also, make sure the control
arm is securely fastened to the trunnion arm of the
transaxle.
6. Inspect the bypass mechanism on the transaxle and unit
linkage to make sure it rotates and releases fully.
IMPORTANT INFORMATION Any servicing dealer
attempting a warranty repair must have prior approval
before conducting maintenance of a Hydro-Gear® product,
unless the servicing dealer is a current Authorized Hydro-
Gear Service Center.
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MAINTENANCE