Stihl 5910 890 1700 Technical Information page 8

A 0.1 mm feeler gauge (part no. 4180 893
6400) is included in the tool kit. This gauge is
used for setting the proper valve clearance on
all STIHL 4- Stroke engines.
To set the valve clearance, rotate the
crankshaft to TDC (top dead center) and verify
that both valves are closed. There should be
play or movement in both the intake and
exhaust valve rocker arms.
Insert the feeler gauge between the rocker
arm and valve stem. Use an 8 mm wrench or
socket to tighten or loosen the adjusting nut
on top of the rocker arm (see arrow) until the
gauge is able to slide with some slight
resistance between the valve stem and rocker
arm.
The recommended valve clearance for all
STIHL 4- Stroke engines is 0.1 mm to 0.3 mm
(0.004" to 0.012") when the engine is cold.
DLR 2007-02 New Special Tools ea 2012.doc
The tool kit also includes a lubricant that will
assist in the assembly of rubber
components such as intake manifolds, anti-
vibration buffers, fuel hoses, and o-rings.
The lubricant evaporates after assembly
without leaving an oily residue.
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