17 Troubleshooting
Error
Cause
The engine
The engine oil pressure is too
cuts out after
low.
3 seconds.
Ride-on mower errors
Error
Cause
The ride-on
The gearbox is disengaged.
mower does
The V-belt of the gearbox is
not begin to
worn, damaged or detached.
move.
The feather key is not located in
the groove of the rear axle.
The ride-on
The blades are damaged or
mower vibra‐
unbalanced.
tes excessi‐
vely.
The blades are not correctly
attached.
The V-belt or toothed belt of the
mowing deck is damaged.
The mounting of the engine is
loose.
Mowing deck errors
Error
Cause
The grass is
The blade is blunt or worn.
not being cut
The driving speed is too high.
cleanly, or the
The throttle lever is not in
grass turns
the "MAX" position.
yellow.
The mowing deck position is
incorrect.
The discharge chute is clogged,
or the mowing deck is dirty.
The discharge
The blades are damaged or
chute is clog‐
worn down.
ged.
The mowing deck or discharge
chute is dirty.
The grass is too tall or too
moist.
The level sensor is incorrectly
adjusted.
The tire pressure is incorrect.
0478-192-9615-A
Remedy
► Do not make any further attempts to start the
machine.
► Perform a visual check for oil leakage on the com‐
bustion engine.
► Check the oil level and refill the engine oil as nee‐
ded.
► If the error persists: Do not use the ride-on mower
and instead consult a STIHL authorized dealer.
Remedy
Engage the gearbox.
Contact a STIHL authorized dealer.
► Install or remove the rear wheels as described in
this User Manual.
► If the feather key is missing: Consult a STIHL
authorized dealer.
► Check the blades.
► If the blades are unbalanced: Sharpen the blades.
► If the blades are damaged: Have the blades
replaced by a STIHL authorized dealer.
Install the blade as described in this User Manual.
Contact a STIHL authorized dealer.
Tighten the fastening screws of the engine.
Remedy
Sharpen or replace the blade.
Reduce the driving speed.
Set the throttle lever to the "MAX" position.
► Check the mowing deck.
► If the mowing deck position is incorrect: Consult a
STIHL authorized dealer.
Clean the ride-on mower.
Sharpen or replace the blade.
Clean the ride-on mower.
► Reduce the driving speed.
► Mowing in two stages:
– Mow the lawn at the highest cutting height.
– Mow the lawn at the desired cutting height.
Pull out the level sensor a bit more.
Check the tire pressure.
English
79