Technical Information · issue 36 of 2003
Technical description; Specifications; Starting th
IssueTI 36/2003
Engine family 1123
Full text
Page 1 of 5
STIH)
Technical Information
36.2003
Chain saws STIHL MS 210 C – Series 1123
Contents
1. Technical description
2. Specifications
3. Starting the chain saw
4. Carburetor
5. Ignition module
6. Wiring harness
7. Engine housing
8. Handlebar
9. Service note
10. Summary
An additional new version of the MS 210 C is 1. Technical description
now available with Easy2Start to make starting
considerably more convenient. A helical spring 1.1 Functioning of the starter mechanism
stores the energy when pulling on the starter with Easy2Start
rope and trasmits it to the engine via a driver.
This yields the following advantages for the user: F1
2
. Low starting speed:
The speed required to pull the starter rope is 3
reduced by approx. 60%
4 F2
. Less effort:
The maximum effort required to start the engine
is reduced by approx. 50% 5
. Peak forces of compression are no longer felt 1
208TI016 KN
on the starter grip
Easy2Start cannot be retrofitted in the previous A spring housing (1) with spring (2) and a driver (3)
model MS 210 or 021 chain saws. are installed between the rope rotor and flywheel (4).
When the starter rope is pulled, F1 tensions the
spring (2) against the opposing force F2 built up
by the piston (5) during compression.
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)m~ge 2 Technical Information 36.2003
If the torque of the pretensioned spring is greater The action of the spring housing prevents the spring
than the resultant torque of force F2, the crankshaft housing turning back and releasing the spring. In
will turn over and the engine is started. this way, the spring can be tensioned in several
short starting strokes.
1.2 Mechanical design of the starter
mechanism with Easy2Start
7
9 10 11
1
5 13 17
7
6 8 15
16
208TI018 KN
14
16
1 = Fan housing 1) 10 = Washer 1)
2 = Handle 2) 11 = Spring housing with spring 1)
3 = Starter rope 36 in (910 mm) 1) 12 = Spring (not available separately
4 = Rating plate 2) as a spare part) 1)
5 = Rewind spring 1) 13 = Driver 1)
6 = Rope rotor 1) 14 = Washer 1)
15 = Circlip DIN 471-8 x 0.8 1)
7 = Pawl 1)
8 = Washer 2) 16 = Pawl with torsion spring and e-clip 1)
9 = Spring 1) 17 = Flywheel 1)
1) New part for Easy2Start version
2) Same part as for previous version
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Technical Information 36.2003 Page 3
1.3 Starting effort 2.2 Dimensions
The effort required to start the engine is reduced, by
approx. 50%.
24 mm
Peak forces due to compression are not transmitted
to the starter grip. For the user, this is perceived as
smoother starting.
a = MS 210 standard
b = MS 210 C with Easy2Start
Vertical axis: starting effort
Horizontal axis: pulled length of the starter rope
208TI019 KN
(N)
The overall width of the version with Easy2Start is
increased by just under 1 in (24 mm).
b
3. Starting the chain saw
The safety instructions in the user's manual must be
observed when starting the chain saw.
208TI017 KN
0
0 1 2 3 4 The MS 210 C with Easy2Start can be started in
different ways.
1.4 Equipment features . Slowly and uniformly pull the starter grip
through with the right hand –
The new MS 210 C features the following
equipment: . Pull the starter grip in several short strokes
with the right hand, ensuring that the rope is
. Easy2Start only pulled out a short distance with each pull
. Quick Chain Adjuster-(QCA)
The spring accumulator of the Easy2Start stores the
energy for starting the chain saw. For this reason, a
few seconds may pass between pulling the starter
2. Specifications rope and starting of the engine (although less than
1 second is typically needed). The customer's
The specifications for the new version are the same attention should be drawn to this fact.
as for the previous version, except for the weight
and dimensions. The following safety precautions in the user's
manual must be particularly highlighted in
2.1 Weight conjunction with the MS 210 C with Easy2Start:
The version with Easy2Start is approx. 0.5 lb (230 g) . Keep children at a distance – even very young
heavier. children could accidentally start the machine
. Hold the chain saw firmly by the handlebar
MS 210 C with Easy2Start 10.6 lb (4,8 kg)
throughout the entire starting process –
remember the delay between pulling the
starter rope and starting of the engine
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. To help prevent the engine starting 9. Service note
unintentionally when the saw is not in use,
always move the Master Control to the stop The safety instructions in the user's manual must be
position and engage the chain brake. Protect observed if the chain saw is started in the course
the machine from unauthorized use (e.g. of servicing and repairs.
children).
9.1 Spring accumulator
4. Carburetor The spring of the Easy2Start stores the energy over
a long period of time.
A new carburetor is used in order to adapt to The tensioned spring may cause bodily injury or
the special starting conditions in machines with damage to property when it is dismantled. For this
Easy2Start. reason, the spring must always be relaxed before
starting any maintenance or repair work.
Carburetor C1Q-S90, part No. 1123 120 0619,
is installed in the MS 210 C with Easy2Start. This To relax the spring:
carburetor has a limiter cap on the high speed
. Set the slide control to the stop position 0
adjusting screw H.
. Pull the starter rope until the engine turns over –
The setting procedure is identical with that of the
then guide the starter rope back into place and
previous machines.
stop pulling it
5. Ignition module
A new ignition module is used in order to adapt to
the special starting conditions in machines with
Easy2Start.
Ignition module 1123 400 1301 is installed in the
MS 210 C with Easy2Start.
6. Wiring harness
Due to geometrical changes, the new wiring
harness 1123 440 3002 is used in the MS 210 C
with Easy2Start. The wires in the new wiring
harness are longer.
7. Engine housing
Due to the geometrical changes, the new engine
housing 1123 020 3027 is installed in the MS 210 C
with Easy2Start.
8. Handlebar
Due to the wider starter mechanism, a wider
handlebar is used in order to maintain the correct
distance between the starter mechanism and
handlebar.
Handlebar 1123 791 1701 is installed in the
MS 210 C with Easy2Start.
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Technical Information 36.2003 Page 5
10. Summary
Item Part name Part No. Remarks
1 Fan housing with starter mechanism, 1123 080 2107 1)
including Items 2 – 12
2 Fan housing 1123 080 1804 1)
3 Rewind spring 1123 190 0600 1)
4 Rope rotor 1123 195 0401 1)
5 Starter rope dia. 2.7 x 910 mm (36 in.) 4137 195 8200 1)
6 Pawl 1123 195 7200 1)
7 Spring 1128 195 3500 1)
8 Washer 1123 195 9001 1)
9 Spring housing (with spring) 1123 190 0700 1)
10 Driver 1123 195 2000 1)
11 Washer 0000 958 0806 1)
12 Circlip DIN 471-8 x 0.8 9455 621 0570 1)
13 Flywheel, including Items 14 – 16 1123 400 1205 1)
14 Pawl 1123 195 7201 1)
15
16
Torsion spring
e-clip DIN 6799-3.2
0000 998 1100
9460 624 0320
1)
1)
17 Carburetor C1Q-S90 Easy2Start 1123 120 0619 1)
18 Ignition module 1123 400 1301 1)
19 Wiring harness 1123 440 3002 1)
20 Engine housing 1123 020 3027 1)
21 Handlebar 1123 791 1701 1)
1) New version of part can only be used for the MS 210 C with Easy2Start;
all other parts as before.
Last Technical Information on STIHL MS 210: 17.2003
© ANDREAS STIHL AG & Co. KG, 2003 Technical Documentation
D1/MTK-ja 7940
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Extracted from the manufacturer's 2012 service catalogue. Most of these PDFs embed fonts with a shifted character map, so the text above was recovered rather than copied — read it as a faithful but imperfect transcription, and treat the page image above each block as the authority where the two disagree — the figures exist only there, because they are vector drawings that text extraction cannot keep.