Certa CTLWN4AMWRA, User Manual, Page: 15 / 16

Troubleshooting
Most difficulties are easy to fix. Consult the troubleshooting table for common problems
and their solutions. If you continue to experience problems or need repairs beyond these
minor adjustments, contact your local licensed service center for assistance.
ALWAYS switch off the mower, remove safety key from it’s socket, and remove battery
before performing any adjustments, maintenance, blade change, or repairs to your mower.
Problem Possible Cause Corrective Action
Motor fails to start Safety key removed from battery power socket Put safety key into battery power socket
safety key has been put into the socket,but the
connection is not so tight and secure
Take out safety key and put it into the socket again,
to ensure the tight and secure plugging
Battery discharged Need to recharge the battery before every use, only
use a fully charged battery.
Battery is defective Replace with a fully charged battery
Starting procedure is not correct Make sure you follow the correct starting procedure:
1. Press and hold the safety button (1).
2. Squeeze the switch lever (2) towards the
handle.
3. Release the safety button (1) and hold
switch lever firmly.
The blade may be blocked. Remove safety key form the socket, remove battery,
turn the mower over, and check the blade.
Mower stops while
mowing
(for reasons other than
releasing the switch lever)
The battery has been completely depleted. Recharge the battery immediately or replace it with a
fully charged battery.
Mower is hard to push The grass may be too high for the cutting height. Raise the cutting height or narrow your cutting swath
and try again.
The blade, mower deck, or rear discharge plate may
be clogged with debris.
Remove the safety key from the socket,, and remove
battery, turn the mower over on the left side, and
check below the deck. Clear the debris if necessary.
The mower bogs down or stalls in heavy grass Raise the height of Mower. Cut a narrower swath.
Walk more slowly.
The grass is wet Let the grass dry before mowing.
The battery capacity is not enough Charge the battery or replace with a fully charged
battery.
The wheels may not be rotating freely. Remove the safety key from the socket,, and remove
battery, turn the mower over on the left side, and
check the wheels for damage. Replace with new
wheels if necessary.
Excessive vibration or
noise
The blade may be loose Remove the safety key from the socket,, and remove
battery, turn the mower over on the right side, and
check that the blade is tightly attached or not, if not,
tighten the blade.
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