Lubricating The Gearbox; Storing The Machine - Stihl PC 70 Instruction Manual

14 Lubricating the Gearbox

13.1 Removing the Spark Plug
► Move the slide control to STOP-0.
► Pull off the spark plug boot (1).
► Unscrew the spark plug.
13.2 Checking the Spark Plug
► Clean dirty spark plug.
► Check electrode gap (A) and readjust if neces‐
sary – see "Specifications".
► Rectify the problems which have caused foul‐
ing of the spark plug.
Possible causes are:
– Too much oil in fuel mix.
– Dirty air filter.
– Unfavorable running conditions.
0458-754-8721-E
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WARNING
Arcing may occur if the adapter nut (1) is loose
or missing. Working in an easily combustible or
explosive atmosphere may cause a fire or an
explosion. This can result result in serious inju‐
ries or damage to property.
► Use resistor type spark plugs with a properly
tightened adapter nut.
13.3 Installing the spark plug
► Screw home the spark plug, fit the boot and
press it down firmly.
14 Lubricating the Gearbox
► Check the grease level regularly – about every
50 hours of operation.
► Unscrew the filler plug (1). If no grease can be
seen on the inside of the filler plug, screw the
tube (2) of STIHL gear lubricant for brushcut‐
ters (special accessory) into the filler hole.
► Squeeze up to 40 g grease into the gearbox.
NOTICE
Do not completely fill the gearbox with grease.
► Remove the tube of grease (2).
► Refit the filler plug (1) and tighten it down
firmly.

15 Storing the Machine

If out of use for periods of about 30 days or lon‐
ger
► Drain and clean the fuel tank in a well-ventila‐
ted area.
► Dispose of fuel properly in accordance with
local environmental requirements.
► If a manual fuel pump is fitted: Press the man‐
ual fuel pump at least 5 times.
► Start the engine and run it at idling speed until
it stops
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