Garland 790 QG-V23 Manuel D'instructions page 41

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8. MAINTENANCE AND SERVICE
Priors to any maintenance, to stop engine and switch
it off first.
Disconnect spark plug wire from the spark plug to
prevent unintentional engine starting.
Unintentional sparking can result in fire.
Unintentional start-up can result in entanglement,
traumatic amputation or laceration.
Use only genuine replacement engine parts. Non
compliant parts may damage the engine, and may
result in injury. In addition, use of other parts may void
your warranty rights.
8.1. REPLACING BLADES
Sharpen or replace the blades as soon as the chipping
performance begins to deteriorate, or if you notice
digns, chips or cracks.
To perform this procedure:
1. Turn off the machine, allow all moving parts to
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