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Maintenance
Checking the tyre pressure
The tyre pressure should be 60 kPa (0.6 bar / 9 PSI) all round.
To improve driving the pressure on the rear tyres can be
reduced to 40 kPa (0.4 bar/5.6 PSI). The maximum tyre
pressure is 100 kPa (1,0 bar/14 PSI).
Checking the engine’s cooling air
intake
Clean the air intake grille in the engine cover behind the
driver’s seat.
Open the engine cover.
Check that the cooling intake is free from leaves, grass and
dirt.
Check the air duct, located on the inside of the engine cover,
ensure it is clean and does not rub against the cooling air
intake.
A blocked cooling intake will interfere with the cooling of the
engine, which can damage the engine.
Replacing the hydraulic pump’s
drive belt R 422 Ts AWD
1 Remove the transmission cover.
2 Unhook the spring on the belt tensioner
3 Remove the belt guide for the centre belt.
4 Pull off the centre belt from the engine's pulley and pull out
the rear section.
5 Remove the cooling fan, it is held in place by a nut.
6 Pull the belt off of the pump's pulley.
7 Pull the belt off of the engine's pulley and move it under
the engine belt pulleys.
8 Pull out the belt through the opening under the pivot
bearing and past the belt tensioner's disc.
IMPORTANT INFORMATION
Different tyre pressures on the front tyres will result in the
blades cutting the grass at different heights.
!
WARNING! The cooling air intake rotates
when the engine is running. Mind your
fingers.