Technical Information · issue 32 of 1999
TS 510, 760 Governor speed now 9,200 RPM; Hose cli
Model TS 510, 760 STIHL CutquikTM - Series 4205
IssueTI 32/1999
Full text
Page 1 of 2
Technical Information
32.1999
Model TS 510, 760 STIHL CutquikTM - Series 4205
Contents
1. Cut-off speed now 9,200 RPM (trigger unit, control valve)
2. Hose clip (impulse hose)
1. Cut-off speed now 9,200 RPM
(trigger unit, control valve)
Important: The special version of the TS 760 for
16” cutting wheels is not affected by this change
of trigger unit.
The cut-off speed will be raised from 8,400 RPM to
9,200 RPM from serial # 3 38 376 502 (on TS 510)
and 3 38 377 502 (on TS 760).
070 070
15 16
328TI027 KN
4205 400 1006
Left: Previous control valve 4205 120 8705
Right: New control valve 4205 120 8701
Control valve
The control valve 4205 120 8705 installed up to now
4205 400 1005 in carburetors 4205 120 0602 (TS 510) and 4205
120 0603 (TS 760) has been replaced with version
4205 120 8701. The new control valve is designed
to suit the higher cut-off speed of the trigger unit.
Limiting engine speed by enriching the mixture only
328TI000 KN
takes place if the trigger unit fails.
Valves can be identified by the stamped number
Top: Previous trigger unit 4205 400 1001 (previously 070/15, now 070/16).
Bottom: New trigger unit 4205 400 1000 The introduction of the new control valves has
necessitated a change in the carburetor
designations from HS 280 A to HS 280 B and from
Trigger unit HS 281 A to HS 281 B.
Trigger unit 4205 400 1001 (with 8,400 RPM limit) Service note
will be replaced with version 4205 400 1000 (with
9,200 RPM limit). If a faulty trigger unit 4205 400 1001 is replaced with
trigger unit 4205 400 1000, it is necessary to install
Important: The number printed on the trigger unit the control valve 4205 120 8701 as well (marked
(see illustration) is for identification purposes only - 070/16).
it is not the spare part order number.
TI_32_1999_30_01.fm english / USA Page 2 of 2
Page 2 Technical Information 32.1999
Summary
Item Part Name Previous New Remarks
1 Trigger unit 4205 400 1001 4205 400 1000 1)
2 Carburetor (HS 280 A) 4205 120 0602 --- 2)
3 Carburetor (HS 280 B) --- 4205 120 0602
4 Carburetor (HS 281 A) 4205 120 0603 --- 2)
5 Carburetor (HS 281 B) --- 4205 120 0603
each of above includes:
6 Control valve (070/15) 4205 120 8705 ---
7 Control valve (070/16) --- 4205 120 8701 3)
Modification to be introduced from serial number 3 38 376 502 (TS 510), 3 38 377 502 (TS 760)
Remarks
1) Previous version of part remains available for TS 760 (with 16” cutting wheels)
2) Only modified version of part is available from factory
3) New version of part can also be used for older machines
2. Hose clip (impulse hose)
To provide greater security, the impulse hose will be
attached to the stubs on the crankcase and
carburetor with a hose clip (see illustration).
328TI028 KN
Summary
Item Part Name Part No. Remarks
1 Hose clip (2) 4205 122 2500
Modification to be introduced: in progress
Last Technical Information on models TS 510, TS 760: 31.97
© 1999 Andreas Stihl AG & Co. Technical Documentation
Waiblingen D1/MTK-sc 6667
TI_32_1999_30_01.fm 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.