Engine Model:
RV150 and SV150
RV40, V35
Page
12 of 36 Mountfield150cc Selfhelp Guide 2011, Issue 1.0
B: Spark plug:
1. Check the H.T. lead (spark plug cap) is correctly fitted
to the spark plug and the metal cap inside the H.T.
lead cap is pointing forwards to make a good
connection with the spark plug.
To test for a spark see
2-6 below.
2. Stand the machine on a firm surface and set the
height adjusters to the lowest setting for added safety.
3. Remove the H.T. lead (1 in the diagram).
4. Unscrew the spark plug (2 in the diagram) with a
genuine spark plug spanner.
5. Fit the plug back into the end of the H.T. lead (making
sure the metal cap inside the rubber cap connects
closely) and rest it against the engine block (NB hold
only the black insulation lead).
6. The second person can now hold in the Operators
Presence Control and pull the engine cord. You
should see a spark jump across the end of the plug.
Oil on the spark plug will prevent any spark. To clean oil
from the spark plug, remove and clean the spark plug
completely. ONLY USE A GENUINE SPARKPLUG
SPANNER.
With the sparkplug removed, hold in the OPC and pull the
engine over with the pull cord 6 times to eject any oil from
the spark plug hole. Replace the plug and start the
engine in the normal way. The engine may smoke at first,
but allow the engine to continue running for at least ten
minutes. The smoke will begin to dissipate. Allow to run
until the smoke clears.
NOTE: If there is no spark, change the plug. If
there is still no spark refer to a service dealer
because the coil may be faulty.
NB To test for a spark it
requires 2 people
Spark Plug: RV150,
V35, RV40 - use
Champion QJ19LM
SV150 (2006) - use
Champion J17LM
Champion RJ19LM
(both with screw-off cap,
cap to be screwed off before
fitting)
The spark plug gap for
these engines is
0.6 – 0.8mm or
0.03” (
30
/
1000
)
Your local
ServiceLink centre
can be found at
www.servicelink.org.uk
C: Bleeding air from the fuel supply:
If fuel is not reaching the cylinder it may be there is air trapped in the fuel supply. To
resolve this, place the mower on a solid surface, or patch of gravel or similar (fuel
spillage may kill the lawn or stain a patio), and remove the air filter.
Viewed from the front, to the left of the spark plug and to the right of where the air
filter was you will see the float bowl on the carburettor. A bolt holds the bowl in place
on the very bottom, but on an angle slightly closer to you is another bolt with a red
washer. With a 10mm spanner undo this bolt on the angle until petrol flows freely.
Re-tighten this bolt.
(35 Seiten)
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