EN
125
BEVEL GEAR
• The bevel gear is filled with the right quantity of grease at the factory. However, before using the
machine you should check that the bevel gear is filled three-quarters full with grease (Figure 27).
• The grease in the bevel gear does not normally need to be changed except if repairs are carried out.
SPARK PLUG
• The spark plug condition can be negatively affected by:
– Incorrect carburettor adjustment
– An incorrect fuel mixture (too much or incorrect type of oil).
– A dirty air filter.
• These factors cause deposits on the spark plug electrodes, which may result in operating
problems and starting difficulties.
• If the brush cutter is low on power, difficult to start or runs poorly at idle speed, always start
by checking the spark plug. If the spark plug is dirty, clean it and check that the electrode gap
is 0.6-0.7 mm (Figure 28). The spark plug should be replaced after about a month in operation
or earlier if necessary.
NOTE!
Always use the recommended spark plug type. Use of the wrong spark plug can damage
the piston/ cylinder. Check that the spark plug is fitted with a suppressor.
MAINTENANCE SCHEDULE
Maintenance
Daily
Weekly
Monthly
Clean the outside of the machine.
x
Check that the harness is not damaged.
x
Make sure the throttle trigger lock and the throttle
function correctly from a safety point of view.
x
Check that the handle and handlebar are undamaged
and secured correctly.
x
Check that the stop switch works correctly.
x
Check that the cutting attachment does not rotate
when idling.
x
0.6 – 0.7 mm
28
Summary of Contents for 721-349
Page 101: ...EN 101 Open the choke...
Page 127: ......
