User Manual

0478 111 9937 D - EN
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11.8 Sharpening the mowing blade
If mowing results deteriorate over time,
this is usually the result of a blunt mowing
blade.
The following points must be noted when
resharpening:
● Remove the mowing blade. (Ö 11.7)
● Cool the mowing blade when
sharpening, e.g. with water. The blade
must not be allowed to display blue
colouring, as this would reduce its
cutting quality.
● Sharpen blades evenly to prevent
vibration due to imbalance.
● The cutting angle of 30° must be
observed.
● Observe the wear limits when
sharpening.
● Remove any sharpening burr.
11.9 Cable maintenance
The throttle cable must only be
maintained by trained personnel. STIHL
recommends STIHL specialist dealers.
Adjusting the blade brake clutch
cable
Maintenance interval:
As required
Adjustment of the cable is necessary
– if the mowing blade is stationary
following engagement,
– if engagement only takes place
following a delay,
– if the speed of the engaged mowing
blade decreases during mowing.
Adjusting the cable
● Loosen nut (1) and tension cable (2)
using nut (3). Then tighten nut (1)
again.
Check
Correct adjustment is checked by
measuring the spring length.
● 1 Measure the length of the relaxed
spring (4) using a slide calliper.
● Engage the mowing blade – do not
start the engine. (Ö 10.2)
● 2 Measure the length of the stretched
spring (4).
Difference in length:
at least 3 mm
● Adjust the cable again if necessary.
Adjusting the hydro self-
propulsion cable
RM 756 YC, RM 756 YS
Maintenance interval:
Prior to initial use or as required
Adjustment of the cable is necessary
– before the machine is operated for the
first time
– if the maximum speed is not achieved
– if self-propulsion is permanently
engaged. This means that the lawn
mower automatically begins to move
when the recoil starter rope is pulled,
despite the self-propulsion lever not
being actuated.
Adjusting the cable
● Pull driving speed lever (1) all
the way back.
● Loosen nuts (2, 3) to release
the tension on cable (4).
● Start the engine. (Ö 10.1)
● Pull the self-propulsion lever to the
handlebar and hold. (Ö 10.5)
● Tension cable (4) using nut (3) until
self-propulsion is activated. Then
release the self-propulsion lever, stop
the engine and tighten nut (2).
● Check:
When the self-propulsion lever is not
actuated, the cable is tensioned slightly
and the machine can be pulled
backwards – the wheels are not
blocked.
Adjusting the gearshift cable
RM 756 GC, RM 756 GS
Maintenance interval:
As required
Adjustment of the cable is necessary
– if the individual gears cannot be
engaged.
Risk of injury!
The prescribed tightening torque
must be observed.
Retaining washer (3) must be
replaced each time the blade is
installed.
Blade fastening screw (2) must be
renewed each time the blade is
replaced.
If the mowing blade does not
correctly engage despite the cable
being correctly adjusted, the blade
brake clutch must be checked by a
specialist dealer. STIHL
recommends STIHL specialist
dealers.
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