MS 650, MS 660
English
26
Oil pump with increased delivery rate
(available option)
The oil pump with increased delivery
rate can be identified by the groove (2)
in the adjusting screw.
With this oil pump, in setting range a, the
oil tank can run empty before the fuel
tank, thus causing the saw chain to run
dry.
N in setting range a, fill the fuel tank
only half full or refill the oil tank
when the fuel tank is approximately
half empty
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.
Taking Care of the Guide
Bar
Chain type Pitch Minimum
groove depth
Picco 3/8" P 5.0 mm
Rapid 1/4“ 4.0 mm
Rapid 3/8“; 0.325“ 6.0 mm
Rapid 0.404“ 7.0 mm
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