42
English
Belt drive from the engine to the blade axle
Caution:
To adjust the belt tension, the engine must always be switched off. To
adjust the belt tension for the drive to the blade axle, remove the large protec-
tive cap. (read § 15.1; page 56)
There are 2 belts to drive the blade axle. This drive can be disconnected using a tensioner. This
tensioner is pulled by a cable connected to the red handle on the handlebars.
During the run-in period (about 10 hours), the belts will stretch. As the belt stretches, it will not
engage sufficiently in the belt pulley when it is switched on and slippage may occur. This slippage
will result in loss of drive power and will cause increased wear and tear on the belt. As such, it is
essential to adjust the belt tension especially during the run-in period of a new belt.
There are two possibilities to tighten the belt:
a. The cable guide has an adjustable end sleeve.
• If there is insufficient belt tension, it can be tightened at the beginning by adjusting the end
sleeve.
• For this, loosen the M6 bolt at the end of the sleeve. (Turn anti-clockwise, spanner size 10)
• Turn the nut above the support anti-clockwise so that the end sleeve does not protrude as far
through the holder. (spanner size 10)
• In the meantime, check the belt tension.
• Once the belt is tight again in the belt pulleys, the bolt at the end of the cable sleeve can be
tightened again (turn clockwise, spanner size 10).
• If you notice that there is insufficient thread left on the end sleeve of the cable guide, the belt
tension must be increased by extending the distance between the two belt pulleys. (see b.)
b. Underlay thickness plate
• The engine can be raised higher by adding underlay plates under the engine base.
• Before unscrewing the engine, the reduction gearbox for the drive unit must be loosened. (read
§ 15.1; page 56)
• To do this, unscrew the 4 (M8) engine mounting screws 4 mm (anti-clockwise). Use two size 13
ring spanners.
• Lift the engine base so that the thickness plate can be added underneath. Do this at the front
and the rear.
• Align the two belt pulleys before tightening the engine.
• Then re-tighten the 4 attaching screws (M8) of the engine (turn clockwise, spanner size 13).
• Then adjust the tension correctly by adjusting it on the end sleeve of the cable guide.
• Then adjust the tension from the transmission belt to the reduction gearbox for the drive unit
again.
Summary of Contents for C550 ZR
Page 1: ...C550 ZR COLLECTOR M A N U A L...
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Page 64: ...64 English BZ 201 430 003...