Lubricating The Gearbox - Stihl Fs 251 R Notice D'emploi

20 Inspection and Maintenance
The following maintenance intervals are examples and
apply for normal operating conditions. Actual use and your
experience will determine the frequency of required inspec‐
tion and maintenance.
Air Filter
Cutting Attachment
Air intake on fan housing
Cylinder fins
Spark arresting screen in
muffler
Spacer
Carburetor
Gearbox
1)
STIHL recommends an authorized STIHL servicing dealer
20.2 Inspecting and Maintaining the
Trimmer / Brushcutter
WARNING
■ To reduce the risk of personal injury from unin‐
tended activation, shut off the engine before
inspecting the trimmer / brushcutter or carrying
out any maintenance,
To properly maintain the trimmer / brushcutter:
► Replace a worn deflector, mowing head or
metal cutting attachment.
► Periodically sharpen a metal cutting attach‐
ment.
► Inspect and clean the spark arresting screen
according to the maintenance chart.
► Inspect the spacer of the trimmer / brushcutter
and replace if damaged.
► Inspect the air filter of the trimmer / brushcut‐
ter and replace if damaged.
► Have worn, missing or damaged safety labels
replaced by an authorized STIHL servicing
dealer.
0458-853-8201-A
1)
Replace
Visual inspection
Visual inspection
Check if properly and
securely tightened
Sharpen a metal cutting
attachment
Clean
Clean
1)
Check and Clean
Check
Check idle adjustment, cut‐
ting attachment must not turn
Lubricate every 25 working
hours
6.
X
X
X
X
X
X
X
20.3

Lubricating the Gearbox

WARNING
■ The gearbox becomes hot during operation.
To reduce the risk of burn injury, avoid con‐
tacting the gearbox while it is still hot following
operation. Wait for the gearbox to cool down
before performing this operation.
To lubricate the gearbox:
1
► Remove the screw plug (2).
► If no grease can be seen on the inside of the
screw plug, screw the tube (1) of STIHL gear
lubricant into the filler hole.
► Squeeze no more than 0.2 oz. (5 g) of STIHL
gear lubricant into the gearbox.
► Remove the tube of STIHL gear lubricant.
► Insert the screw plug and tighten it.
English
X
X
X
X
X
X
X
X
2
20.3
31