Fuel Tank; Engine; Pressure - Stihl BR 500 Service Manual

6.7

Fuel Tank

– Drain the fuel tank.
– Remove the tank vent, b 6.5
– Remove the fuel hoses, b 6.6
: Take the screws (arrows) out of
the bottom of the backplate.
– Remove the fuel tank.
2
1
: Disconnect the tank cap cord (1)
from the slot (2).
– Remove the fuel tank cap.
Install in the reverse sequence.
BR 500, BR 550, BR 600
7.

Engine

7.1 Compression Pressure
– Pull off the spark plug boot.
– Unscrew the spark plug.
: Screw compression tester
5910 850 2000 (1) into the spark
plug hole.
The ZAT 3 ignition system tester
5910 850 4520 must be fitted to
discharge the ignition voltage.
The high voltages that occur can
cause an electric shock.
1
1
: Connect spark plug boot to
terminal (1).
: Attach the ground terminal (2) to
the muffler.
: Set the spark gap to about 2 mm
with the adjusting knob (3).
3 2
29