Husqvarna Rider PR 17 Workshop Manual page 59

Synchronising Front and Rear Wheel
Drives PR 17 AWD, PF 21 AWD
The front and rear wheel drives must be
synchronised so that when cornering the
front wheels run at a higher speed than the
rear wheels. When driving straight forwards
all wheels should rotate at the same speed.
In order to avoid measurement error due to
rollback on the differential wheels, two of the
machine's wheel must make contact with the
ground.
Ensure the steering wheel position does not
change while work is in progress.
1. Check that the synchronisation link is
fitted in the upper hole on PR 17 AWD
and in the lower hole on PF 21 AWD.
2. Set the steering wheel in the centre
position. Use a straight edge or the like.
3. Jack up and block the machine with the
wheels on one side on the ground and
the wheels on the other side in the air.
Check that the steering wheel position
has not changed.
4. Mark the free running wheels with reflex
tape or the like.
5. Remember the risk of exhaust fumes.
Measure and note the speed of the rear
wheels at full speed. Now measure the
speed of the front wheels. This should be
between 0-5 % lower than the rear wheel
speed.
6. Check that the steering wheel position has
not changed during the following test. Start
the engine and run warm at full speed until
the wheel speed has stabilized.Check with
tachometer.
7. Stop the engine.
8. Adjust the synchronisation of the wheel
speed using the adjuster rod. First
loosen the locking nuts.
• A longer rod gives a higher speed on the
front wheels.
• A shorter rod gives a higher speed on
the rear wheels.
REPAIR INSTRUCTIONS
Synchronisation link
Jacking up and wheel marking
57
English-