Checking The Lawn Mower; Operating The Lawn Mower - Stihl RM 4.0 RT Instruction Manual

English
► Keep quickly pulling out and returning starter
handle (2) until the engine is running.
► If the engine does not start: see the engine
instruction manual.
9.2 Stopping the Engine
► Place the lawn mower on a level surface.
► Release the control bar for mowing.
The engine stops.
► Leave the user position.

10 Checking the Lawn Mower

10.1 Checking the Controls
Control bar for mowing and control bar for self-
propulsion
► Stop the engine.
► Pull the control bar for mowing and the control
bar for self-propulsion fully in the direction of
the handlebar and release again.
► If the control bar for mowing or the control bar
for self-propulsion is stiff or does not spring
back into the initial position: do not use the
lawn mower and consult a STIHL specialist
dealer.
The control bar for mowing or the control bar
for self-propulsion is defective.
10.2 Checking the Blade
► Stop the engine.
► Detach the spark plug socket.
► Upend the lawn mower,
► Measure the following:
– Thickness a
– Width b
– Sharpening angle c
► If the minimum thickness or minimum width is
fallen below: replace the blade,
► If the sharpening angle is not correct: sharpen
the blade, 19.2.
► If anything is unclear: consult a STIHL special‐
ist dealer.
28
15.1.
19.2.
10 Checking the Lawn Mower

11 Operating the Lawn Mower

11.1 Holding and Guiding the Lawn
Mower
► Hold the handlebar with both hands so the
thumbs enclose the handlebar.
11.2 Setting the Cutting Height
Five cutting heights can be set:
– 30 mm = position 1
– 40 mm = position 2
– 50 mm = position 3
– 60 mm = position 4
– 70 mm = position 5
Setting the cutting height
► Stop the engine.
The blade must not be turning.
► Place the lawn mower on a level surface.
► Press lever (1) outwards towards the rear
wheel and hold in position.
► Move lever (1) to the desired position (2) and
allow it to engage.
11.3 Switching the Drive On and Off
11.3.1 Engaging Self-propulsion
► Place the lawn mower on a level surface.
► Start the engine.
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