Stihl RM 448 VC, Instruction Manual, Page: 24 / 492

–
There is no petrol leaking from the lawn
mower.
–
The fuel tank cap is closed.
–
There is no engine oil leaking from the lawn
mower.
–
The engine oil cap is closed.
–
The lawn mower is clean.
–
The controls are working and have not been
modified.
–
If mowing and the mown grass is to be collec‐
ted in the grass catcher box: the grass catcher
box is correctly attached.
–
If mowing and the mown grass is to be ejected
to the rear: the grass catcher box is detached
and the discharge flap is closed.
–
The blade is correctly attached.
–
Genuine STIHL accessories for this lawn
mower are attached.
–
The accessories are correctly attached.
–
Spring-loaded mechanisms are free from dam‐
age and working.
–
The engine stops when the control bar for
mowing is released.
WARNING
■ If not in safe condition, components may no
longer operate correctly, safety devices may
be disabled and fuel may leak. This may result
in serous or fatal injury to people.
► Do not use a damaged lawn mower.
► If there is petrol leaking from the lawn
mower: do not use the lawn mower and
consult a STIHL specialist dealer.
► Close the fuel tank cap.
► If there is engine oil leaking from the lawn
mower: do not use the lawn mower and
consult a STIHL specialist dealer.
► Close the engine oil cap.
► If the lawn mower is dirty: clean the lawn
mower.
► Do not tamper with the lawn mower and its
safety systems.
► Tampering with the lawn mower which
increases the power output or the engine
speed is forbidden.
► If the controls are not working: do not use
the lawn mower.
► Spring-loaded mechanisms may release
stored energy.
► If mowing and the mown grass is to be col‐
lected in the grass catcher box: attach the
grass catcher box as described in this
instruction manual.
► Attach genuine STIHL accessories for this
lawn mower.
► Attach the blade as described in this
instruction manual.
► Attach accessories as described in this
instruction manual or in the instruction man‐
ual for the accessories.
► Do not insert objects into the apertures in
the lawn mower.
► Replace worn or damaged warning signs.
► If anything is unclear: consult a STIHL spe‐
cialist dealer.
4.6.2 Blade
The blade is in safe condition when the following
conditions are met:
–
The blade and attachments are undamaged.
–
The blade is not deformed.
–
The blade is correctly attached.
–
The blade is correctly sharpened.
–
The blade is burr-free.
–
The blade is correctly balanced.
–
The minimum thickness and minimum width of
the blade are not fallen below, 19.2.
–
The sharpening angle is observed, 19.2.
WARNING
■ In unsafe condition, blade parts may come
loose and be expelled. This may result in seri‐
ous injury to people.
► Use an undamaged blade and attachments.
► Attach the blade correctly.
► Sharpen the blade correctly.
► If the minimum thickness or minimum width
is fallen below: replace the blade.
► Have the blade balanced by a STIHL spe‐
cialist dealer.
► If anything is unclear: consult a STIHL spe‐
cialist dealer.
4.7 Fuel and Refuelling
WARNING
■ The fuel used for this lawn mower is petrol.
Petrol is extremely inflammable. If petrol
comes into contact with an open flame or hot
objects, it may cause fires or explosions. This
may result in serious or fatal injury to people
and damage to property.
► Protect petrol from heat and fire.
► Do not spill petrol.
► If petrol is spilled: wipe up the petrol with a
cloth and wait until all parts of the lawn
mower are dry before attempting to start the
engine.
► Do not smoke.
► Do not refuel in the vicinity of flames.
English 4 Safety Precautions
24 0478-111-9904-A