English / USA
If engine is down on power, difficult to
start or runs poorly at idling speed, first
check the spark plug.
:
Remove spark plug
:
Clean dirty spark plug.
:
Check electrode gap (A) and
readjust if necessary – see
"Specifications".
:
Use only resistor type spark plugs
of the approved range.
Rectify problems which have caused
fouling of spark plug:
:
Too much oil in fuel mix.
:
Dirty air filter.
:
Unfavorable running conditions,
e.g. operating at part load.
Fit a new spark plug after approx.
100 operating hours
or earlier if the electrodes are badly
eroded.
28
1
To reduce the risk of fire and burn
injury, use only spark plugs
authorized by STIHL. Always press
spark plug boot (2) snugly onto
spark plug terminal (1) of the proper
size. (Note: If terminal has
detachable SAE adapter nut, it must
be attached.)
A loose connection between spark
plug boot and ignition wire
connector in the boot may create
arcing that could ignite combustible
fumes and cause a fire.
Replacing Starter Rope
and Rewind Spring
Replacing the starter rope
2
:
Take out the screws (1).
:
Remove the starter cover (2).
:
Use a screwdriver or suitable pliers
to ease the spring clip (3) off the
starter post.
The rewind spring may pop out and
uncoil – take care to avoid injury.
:
Carefully remove the rope rotor with
washer (4) and pawls (5).
BR 500, BR 550, BR 600