Gravely 48 ZT XL User Manual

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GB - 29

TROUBLESHOOTING

PROBLEM PROBABLE CAUSE CORRECTION

Engine will not

crank/start.

1. Safety interlock

system is not

engaged or is

faulty.

1. Check safety interlock system (see

Safety Interlock System on

page 13).

2. Fuel tanks empty. 2. Fill fuel tanks (see FI

LLING FUEL

TANK on page 15).

3. Discharged

ba

ttery.

3. Charge battery (see Charging the

Battery on page 24).

4. Poor connection

be

tween battery

and battery cables.

4. Tighten battery cables and/or clean

battery and battery cables (see

Cleaning Battery and Battery Cables

on page 23).

5. Spark plug wire(s)

loose or spar

k

plug(s) faulty.

5. Connect spark plug wire(s) or

replace spark plug(s). Refer to

Engine Manual for detailed

instructions.

6. Faulty electrical

sys

tem.

6. Contact your Gravely Dealer.

7. Faulty engine. 7. Contact your Gravely Dealer.

Engine runs

roug

h.

1. Choke engaged. 1. Disengage choke.

2. Air filter cartridge

plugged.

2. Clean or replace air filter cartridge.

R

efer to Engine Manual for detailed

instructions.

3. Faulty engine. 3. Contact your Gravely Dealer.

Unit does not

mo

ve with

engine running

when using

steering levers.

1. The transmission

byp

ass lever is

engaged.

1. Disengage transmission bypass

lever (see on page 17).

2. Faulty hydrostatic

be

lt.

2. Replace hydrostatic belt (see

REPLACING HYDROSTATIC BELT

on page 26).

3. Faulty

tr

ansmission.

3. Contact your Gravely Dealer.

Table of Contents

Questions and Answers:

S
samuelsalinasAug 16, 2025
Why my Gravely 48 ZT XL Lawn Mower engine will not crank/start?
- J
  johnleeAug 16, 2025
  If your Gravely Lawn Mower engine won't crank or start, several factors could be at play. First, make sure the safety interlock system is properly engaged and not faulty. Next, ensure the fuel tanks are filled. A discharged battery could also be the culprit, so try charging it. Check for poor connections between the battery and cables, tightening or cleaning them as necessary. Inspect the spark plug wires and plugs, connecting any loose wires or replacing faulty plugs. If these steps don't resolve the issue, there may be a fault in the electrical system or the engine itself, and you should contact your Gravely Dealer.
A
Anna ElliottAug 19, 2025
What to do if PTO or mower blades do not engage or shuts off on my Gravely 48 ZT XL Lawn Mower?
- A
  Aaron WangAug 19, 2025
  If the PTO or mower blades on your Gravely Lawn Mower won't engage or shut off, it could be due to several reasons. Ensure the operator presence switch is depressed by sitting on the seat. A loose or disconnected electric clutch connector can also cause this issue; check and connect it. Additionally, inspect the PTO belt for faults and replace if necessary. If these steps don't resolve the issue, the operator presence switch, PTO switch, wires, connectors, or clutch may be faulty, and you should contact your Gravely Dealer.
R
Rebecca WoodAug 22, 2025
What to do if my Gravely 48 ZT XL does not move with engine running when using steering levers?
- C
  Christopher RobersonAug 22, 2025
  If your Gravely Lawn Mower doesn't move when using the steering levers while the engine is running, first check if the transmission bypass lever is engaged and disengage it. If that's not the issue, the hydrostatic belt might be faulty and needs replacement. If problems persist, the transmission itself may be faulty, and you should contact your Gravely Dealer.

Gravely 48 ZT XL Specifications

General

Engine Brand	Kawasaki
Engine Displacement	726 cc
Cutting Width	48 inches
Number of Blades	3
Spindle Material	Aluminum
Cutting Height	1.5 - 4.5 inches
Turning Radius	Zero Turn
Warranty	3 years

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