43MS 171, MS 181, MS 211
Using ZAT 3 ignition tester
5910 850 4520
– Before starting the test, install a
new spark plug in the cylinder
and tighten it down firmly
– Tightening torques, b 3.5
– Connect spark plug boot to the
terminal (2).
: Attach ground terminal (1) to the
spark plug.
: Use adjusting knob (3) to set
spark gap to about 2 mm.
While using the ZAT 3, hold it only
by the handle (4) or position it in a
safe place. Keep fingers or other
parts of your body at least 1 cm
away from the spark window (3),
high voltage connection (2), ground
connection (5) and the ground
terminal (1).
533RA375 TG
1
2 3
376RA135 TG
1
3 4
5
2
High voltage – risk of electric shock.
– Crank the engine quickly with the
rewind starter and check spark in
the tester’s window (3).
The engine may start and
accelerate during the test.
If a spark is visible, the ignition
system is in order.
If no spark is visible in the window
(3), check the ignition system with
the aid of the troubleshooting
chart, b 9.7
9.4 Spark Plug Boot
The ignition module and ignition
lead are an assembly. If the ignition
lead is damaged, install a new
ignition module.
– Remove the shroud, b 8.4
– Pull the boot off the spark plug.
: Use suitable pliers to pull the leg
spring out of the spark plug boot.
– Unhook the leg spring from the
ignition lead.
– Pull the boot off the ignition lead.
533RA153 TG
– Use a pointed tool to pierce the
center of the ignition lead’s
insulation, 95.6 mm from the end
of the lead.
: Pinch the hook of the leg spring
into the center of the lead (arrow).
– Coat inside of spark plug boot
with Press Fluid, b 16
: Hold the ignition lead and leg
spring together and push them
into the spark plug boot.
95,6 mm
533RA186 TG
376RA136 TG
533RA154 TG
To Next Page
Loading...
