Instruction Manual

HT 250
English
28
N Turn the bar over – every time you
sharpen the chain and every time
you replace the chain – this helps
avoid one-sided wear, especially at
the nose and underside of the bar.
N Regularly clean the oil inlet hole (1),
the oilway (2) and the bar
groove (3).
N Measure the groove depth – with the
scale on the filing gauge (special
accessory) – in the area used most
for cutting.
If groove depth is less than specified:
N Replace the guide bar.
The drive link tangs will otherwise
scrape along the bottom of the groove –
the cutters and tie straps will not ride on
the bar rails.
If there is a noticeable loss of engine
power
N Turn the choke knob to g
N Press in the tab (1) and remove the
filter cover (2).
N Clean away loose dirt from around
the air filter (3) and inside the filter
cover.
N Remove the filter element and
check it – replace if dirty or
damaged.
N Install the filter element in the filter
housing.
N Fit the filter cover.
Taking Care of the Guide Bar
Chain type Chain pitch Minimum
groove
depth
Picco 3/8" P 0.20"
(5.0 mm)
3
2
1
390BA050 KN
Replacing the Air Filter
1
2
3
250BA022 KN