Stihl TS 400 Technical Information

ElastoStart
Standard grip
The compensator is designed to reduce costs and
allows the machine to be used more effectively.
In addition, it ensures that the fuel/air mix remains
constant.
STIHL - Quickstart system for easy starting
The Elastostart is designed to reduce the sudden
peak forces (compression pressure) normally felt
during cranking. The forces which occur at the grip
after the first compression stroke are practically
uniform. The Elastostart consists of 3 separate
components:
• Grip
• Rubber element
• Starter rope
The rubber element is integrated in the starter grip.
A plastic plate is attached to both the top and
bottom of the rubber element in a vulcanization
process and 2 tapered plastic nipples are molded to
the starter rope. The distance between the two
nipples is greater than the length of the rubber
element in its relaxed state but less than the length
of the rubber element in the stretched condition.
The rope between the two nipples is accomodated
in a compressed condition inside the rubber element.
Duringthestartingprocessthetensileforce
applied by the operator pulling the rope is
transmitted via the grip (1) to the rubber element (2)
and from the lower nipple (3) to the rope (4).
However, as this tensile force is opposed by
compression pressure, the rubber element stretches
by an amount proportional to the compression
pressure. This means that the peak forces which
occur on each compression stroke (every revolution
of crankshaft) are cushioned.
The forces which occur at the grip after the first
compression stroke are practically uniform.
This enhances starting comfort.
The rubber element is protected from overload in
that it can only be stretched until the rope inside its
bore is fully tensioned. Cranking effort is then
transmitted to the rope through the grip and the
upper nipple (5).
Decompression valve
The decompression valve reduces the compression in the combustion chamber when starting and thus also
reduces the force required to pull the starter rope. This in turn reduces the physical effort required to start the
machine and makes it more convenient to operate. The valve is opened manually and closes automatically as
soon as the fuel/air mixture ignites for the first time.
Tensile force (pull)
Travel (hand)
Technical Information 37.95 - Page 3

Stihl TS 400 Specifications

General

Arbor Size	20 mm
Power Output	3.2 kW
Engine Type	2-stroke
Sound Pressure Level	98 dB(A)
Sound Power Level	109 dB(A)
Maximum Wheel Size	350 mm
Wheel Size	14 in.
Maximum Cutting Depth	125 mm
Cutting Depth	125 mm
Blade Diameter	14 in.
Warranty	2 years
Engine Power	3.2 kW