Checking And Adjustment Of The Cutting Unit's Ground Pressure; Checking The Cutting Unit's Parallelism; Adjusting The Parallelism Of The Cutting Unit - Jonsered FR 2213 MA Operator's Manual

Checking and adjustment of the
cutting unit's ground pressure
To achieve the best cutting results the cutting unit should
follow the underlying surface without pressing too hard
against it. Pressure is adjusted using a screw and spring on
each side of the Rider.
1 Check the air pressure in the tyres 60 kPa / 0.6 bar / 9 PSI.
2 Place a set of bathroom scales under the cutting unit's
frame (front edge) so that it rests on the scales. If
necessary a block can be placed between the frame and
scales so that the support wheels do not bear any weight.
3 Adjust the cutting unit's ground pressure by screwing the
adjuster screws, which are located behind the front
wheels on both sides, in or out. The ground pressure
should be between 12 and 15 kg and the springs evenly
tensioned.
Checking the cutting unit's
parallelism
Check the cutting unit's parallelism as follows:
1 Check the air pressure in the tyres 60 kPa / 0.6 bar / 9 PSI.
2 Place the machine on a flat surface.
3 Measure the distance between the ground and cutting
unit's edge at the front of the cover.
The cutting unit should have a slight slant, with the rear
edge 2-4 mm (1/8") higher than the front edge.
Maintenance
Adjusting the parallelism of the
cutting unit
1 Remove the front cover.
2 Unscrew the belt shield.
3 Loosen the parallelism stay's nuts, the inner nut has a left-
hand thread.
4 Screw out (extend) the stay to raise the rear edge of the
cover. Screw in (shorten) the stay to lower the rear edge
of the cover.
5 Tighten the nuts after adjustment.
6 On completion of the adjustment the unit's parallelism
should be re-checked.
7 Screw on the belt shield.
8 Fit the front cover.
– 23
English