Gravely Pro-Stance 1934FX Owner's/Operator's Manual page 21

Adjusting Carburetor
Carburetor is calibrated by the engine manufacturer and is not
adjustable.
If engine is operated at altitudes above 1829 m (6,000 ft), some
carburetors may require a special high altitude main jet. See your
authorized dealer.
If engine is hard to start or runs rough, check the
TROUBLESHOOTING section of this manual.
Possible engine surging will occur at high throttle with transmission
in "N" neutral and mower engagement lever disengaged. This is a
normal condition due to the emission control system.
After performing the checks in the troubleshooting section and your
engine is still not performing correctly, contact your authorized
dealer.
Replacing Fuel Filter
CAUTION: Avoid injury! Fuel vapors are explosive and
flammable:
• Do not smoke while handling fuel.
• Keep fuel away from flames or sparks.
• Shut off engine before servicing.
• Cool engine before servicing.
• Work in a well-ventilated area.
• Clean up spilled fuel immediately.
IMPORTANT: Avoid Damage! When installing a new fuel filter,
the filter arrow must be pointed in the direction of the fuel flow.
1. Park machine safely. (See Parking Safely in the SAFETY
section.)
2. Allow engine to cool.
3. Slide hose clamps (A) away from fuel filter (B).
4. Place drain pan under hoses to catch any fuel that may be left
in the hoses.
5. Disconnect hoses from fuel filter (B).
6. Install new fuel filter (B).
• Make sure fuel filter (B) is installed with arrow pointing in
direction of fuel flow.
A
A
B
GB - 21
7. Connect hoses to new fuel filter (B).
8. Install hose clamps (A).
9. Start engine and check for fuel leaks.
Service Transmission
Hydraulic Oil
Use only 5W-50 or 15W-50 all synthetic oil.
Checking Hydraulic Oil Level
IMPORTANT: Avoid Damage! Check oil level in reservoir tank
when oil is cold.
Do not overfill oil reservoir tank. Oil will expand during
operation and could overflow.
1. Park machine safely. (Refer to Parking Safely in SAFETY
section.)
A
B
2. Clean area around reservoir dipstick cap (A).
3. Remove dipstick cap (A). Wipe dipstick clean.
NOTE: Do not tighten dipstick cap when checking oil level.
4. Insert dipstick into reservoir filler neck (B). Do not tighten cap.
5. Remove dipstick. Check oil level on dipstick. Oil level should
be in crosshatch area between ADD and FULL marks.
• If oil is low, add oil to bring oil level no higher than FULL mark
on dipstick.
• If oil is above FULL mark, drain oil to proper level.
6. Insert dipstick. Tighten cap.