O.S. Engines FS-40S-CX - Manual (Page 18)

Note:
Valve clearances of all O.S. four-stroke-
cycle engines must be checked and reset
ONLY WHEN THE ENGINE IS COLD.
Procedure is as follows.
• Feeler gauge 0.04mm
ALL O.S. four-stroke engines have their
valve(tappet) clearances correctly set before
they leave the factory. However, if, after many
hours of running time have been logged, a loss
of power is detected, or if the engine has to be
disassembled or repaired as a result of an
accident, valve clearances should be checked
and readjusted, as necessary. O.S. Valve
Adjusting Tool Kit is available as optional
accessory.
VALVE ADJUSTING
The kit comes in a plastic case and includes:
(Code No.72200060)
• Feeler gauge 0.1mm
• Hex. key 1.5mm
• Wrench 5mm
For 40S-CX
IF THE ENGINE FAILS TO START
Check the following:
Glowplug battery discharged or glowplug
defunct.
Fuel not reaching carburettor.
Engine flooded. Do not over-prime. (This
could also cause hydraulic lock and damage
the engine on application of the electric
starter.) Remove glowplug, close needle-
valve and apply starter to pump out surplus
fuel. (Cover the plug hole with a foided cloth,
so that fuel cannot spiash into your face.)
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