3. Put a clean metal rod into the gear housing. The
metal rod must be a minimum of 100 mm long and
maximum 3 mm in diameter.
4. Lower the metal rod to the bottom of the gear
housing.
5. Pull the metal rod out and read the oil level.
6. Measure the part of the metal rod that has oil on it.
There must be oil on 15 mm of the metal rod.
7. Fill with gearbox oil if the oil level is less than 15 mm
of the metal rod. Refer to
Technical data on page
67
for recommended oil.
To replace the oil in the bevel gear of the
cutting deck
1. Remove the cutting deck. Refer to
.
2. Put the cutting deck on its front edge and drain the
oil through the oil fill plug.
3. Let the oil run out into a container.
4. Fill with 80 ml new hydraulic oil as given in
data on page 67
.
To do a check of the parallelism of the cutting
deck
1. Do a check of the air pressure in the tires. Refer to
.
2. Park the product on a level surface.
3. Lower the cutting deck to mow position.
4. Set the cutting height lever to the middle position.
5. Measure the distance between the ground and the
front and rear edges of the cutting deck.
a) Combi 155 must be measured in 2 areas. Make
sure that the rear edge is 6–9 mm (1/4 - 3/8 in.)
higher than the front edge.
b) Combi 155 X must be measured in 4 areas.
Make sure that the rear edge is 6–9 mm (1/4 -
3/8 in.) higher than the front edge.
To adjust the parallelism of the cutting deck
1. Turn the track rod to extend it or make it shorter.
Extend the track rod to lift the rear edge of the cover.
Make the track rod shorter to lower the rear edge of
the cover.
2. Tighten the nuts on the track rod.
3. Do a check of the parallelism. Refer to
check of the parallelism of the cutting deck on page
57
.
4. Attach the front cover.
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