EN
123
MAINTENANCE
LOCKING NUT
NOTE!
• The nut has a left-hand thread.
• The nylon lining inside the locking nut (the threading) must not be so worn
that you can turn it by hand.
• The lining should offer a resistance of at least 1.5 Nm.
• The nut should be replaced after it has been put on approx. 10 times.
1.
When fitting the cutting attachment, tighten the locking nut in the opposite direction to
the direction of rotation of the cutting attachment.
2.
To remove it, undo the nut in the same direction as the cutting attachment rotates. NOTE!
Tighten the nut using the socket spanner (Figure 24).
AIR FILTER
• The air filter must be regularly cleaned to remove dust and dirt in order to avoid:
– Carburettor malfunctions
– Starting problems
– Loss of engine power
– Unnecessary wear to engine parts.
– Excessive fuel consumption.
• Clean the filter every 10 hours, or more regularly if conditions are exceptionally dusty.
24
Summary of Contents for 721-349
Page 101: ...EN 101 Open the choke...
Page 127: ......
