Silencer Spark-Arrester Grid; Sparkplug - GEISMAR STUMEC MTZ 350S Manual

5.1.5 Silencer spark-arrester grid*

If the engine has lost power, check the spark-
arrester grid on the silencer.
Wait until the engine has cooled down
completely before carrying out this operation.
➊ Using an appropriate tool, nip the ends of
fastener Ref.② and remove.
➋ Extract the spark-arrester Ref.① from the
silencer :
- If the spark arrester is dirty, clean it.
- If it is damaged or heavily scaled, replace
it.
➌ Re-fit the spark-arrester by proceeding as
above in the reverse order.
*
Only for specially equipped rail cutting machines
(USA, CANADA and AUSTRALIA)
5.1

5.1.6 Sparkplug

Should the engine lack power or be difficult to
start up or the idling speed not be smooth,
systematically check the condition of the
sparkplug.
➊ Place the combined action lever Ref.③ on
position « 0 » (multi-purpose spanner).
➋ Unscrew the sparkplug cover screw Ref.④
(multi-purpose spanner).
➌ Remove spark plug cover Ref.⑤.
1
4
2
➍ Remove the plug contact Ref.⑥.
➎ Unscrew sparkplug Ref.⑦ (multi-purpose
spanner).
6
7
3
5
MTZ_Gb_00304_070627.doc
➏ Check the condition of the sparkplug :
- If the plug is dirty, clean it with a fine
metal bristle brush. Then check that the
distance between the electrodes is 0,5 mm.
Adjust if required.
0,5 mm
- If the plug electrodes are extremely worn,
replace the plug.
ONLY use resistor-type spark plugs (See
§2.5 "Technical characteristics").
sparkplugs are liable to damage the piston or
the cylinder.
➐ Refit the plug.
➑ Fit the plug contact firmly onto the
sparkplug.
After cleaning the sparkplug and before
restarting the machine, eliminate any causes
liable to dirty up the sparkplug:
- Dirty air-filter (See §5.1.11)
- Poorly adjusted carburettor (See §5.1.4)
- Too much oil in the mix (See §3.2.1)
Other
5.1