Technical Information · issue 45 of 1995
New version 036 QS with “Quickstop Super” chain br
IssueTI 45/1995
Engine family 1125
Full text
Page 1 of 6
Technical Information
45.95
New STIHL 036 QS "Quickstop Super" Chainsaw - Series 1125
As the innovator of the chain brake, STIHL is now The chain is brought to a complete standstill within
launching a more advanced chain braking system fractions of a second as soon as the operator
in the 036 QS. completely releases the rear handle and trigger.
This system is a world first in gasoline chainsaws.
The STIHL 036 QS is a newly developed chainsaw
with enhanced active safety. As before, the chain No additional controls are necessary. The throttle
brake can be activated via the front hand guard or trigger interlock lever has been ergonomically
by inertia in certain kickback situations. In addition, shaped to ensure reliable activation of the braking
the QS braking system is now activated via the system in almost all situations.
interlock lever.
)Technical Information 45.95 - Page 2
&RQWHQWV
1. Description of operation
2. Specifications
3. Repairs
4. Spare parts
1.====Description of operation
• Throttle trigger interlock lever doubles as the
activating lever for the QS system
• Brake band releases clutch drum whenever
interlock lever is pressed while engine is running -
the saw chain can then rotate
• When interlock lever and trigger is released,
brake band tightens around clutch drum -
saw chain stops within fractions of a second
• After the chain brake has been activated (either
by inertia or manually) the rear handle has to be
released (throttle trigger and interlock lever) to
reset the chain braking system
• Braking system can be activated in three ways, Disengage brake
i.e.
– by the inertia of the front hand guard
(in certain kickback situations)
– by the user’s hand contacting the front hand
guard
– by releasing the rear handle (QS),
i.e. the interlock lever and trigger.
Engage brake
Note on chain lubrication
The STIHL 036 QS must be run with a quality
chain lubricant to guarantee dependable
operation. The only biological chain oil that can
be recommended is STIHL Bioplus.
This also applies to the lubrication of sliding and
pivot points (see also 3.1). Unsuitable lubricants
may result in a build up of resin and premature
failure of the chain brake.
)Technical Information 45.95 - Page 3
2.===Specifications
The specifications of the STIHL 036 QS are
exactly the same as those of the STIHL 036.
Only its weight has increased slightly from 5.7 kg
(12.6 lb) to 6.0 kg (13.2 lb).
Main changes to existing components
• Oil pump housing serves as support
for parts of braking system
(modular construction)
• Bigger chain sprocket bearing
• Better dust seal
• Ceramic coated brake band
• Oil pump controlled by position of
brake band
• Chain brake is engaged by cam
mounted to crankshaft
3.===Repairs=============================================fo
If the saw is started up in the course of repairs or
maintenance work, it is essential to strictly observe
all local and national safety regulations and the
safety precautions outlined in the owner’s manual.
3.1=Service notes
Inspections, servicing and repairs must be
performed by properly trained and authorized
personnel.
Checking operation of chain brake
=with bar and chain fitted
• Open throttle wide
• Release rear handle interlock lever and throttle
trigger
• The chain must come to a stop within fractions
of a second!
)Technical Information 45.95 - Page 4
If the brake does not operate properly, the sliding
and bearing points shown in the illustrations must
be serviced as follows:
If lightly contaminated
• Clean all parts with a brush and white spirit
If heavily contaminated or clogged with resin
• Remove parts concerned and clean with white
spirit or resin solvent
• Replace worn or damaged parts
• Before re-installing parts, clean machine
recesses and seats
In both cases
Lubricate with Mobilplex 0781 120 1111
Ø Coat with chain lubricant
(outside diameter of clutch drum)
Important!
The only biological chain oil that can be
recommended is STIHL Bioplus!
148TI003 KN
To guarantee reliable operation, use only
original STIHL replacement parts as per the
latest parts list.
148TI004 KN
)Technical Information 45.95 - Page 5
3.2=Tightening torques
DG screws are used in polymer components. These screws form a permanent thread when they are installed
for the first time. They can be removed and installed as often as necessary without affecting the strength of
the screwed assembly, providing the specified tightening torque is observed. For this reason it is essential to
use a torque wrench.
Fastener Thread For component Torque lbf.ft Rem.
size Nm
Spline screw IS-DG 4x12 Oil pump/crankcase 3.5 2.6
Spline screw IS-DG 5x30 Handschutzhebel/hand guard 7.0 5.2 1)
Hex. head screw M 6x20 Hand guard/crankcase 6.5 4.8 2)
Pin M 7x0.75 Pin/oil pump 7.0 5.2 2)
All other parts as 036
Use following procedure to refit a DG screw in an existing thread:
• Place the screw in the hole and rotate it counterclockwise until it drops down slightly.
• Now tighten the screw clockwise to the specified torque. This procedure ensures that the screw engages
properly in the existing thread and does not form a new thread and weaken the screwed assembly.
5HPDUNV
1) Screw must be secured with adhesive 0786 111 1117 (LOCTITE 648).
2) Screw must be secured with adhesive 0786 111 1101 (LOCTITE 242).
Note:=pcrews secured with adhesive are easier to release if the adhesive is heated first with a hot air blower
Eh~ir=dryerFK=Take care not to overheat polymer components!
)Technical Information 45.95 - Page 6
3.3=Repair times
No. Repair procedure 036 QS
The specified repair times assume that the work is 1125
performed by trained personnel in a properly
equipped service workshop. 1 Crankcase, engine pan,
pressure test* 140
The repair times are given in minutes.
2 Engine housing –
Note: This table for the STIHL 036 QS can be
added to the STIHL repair times table (page 3) 3 Crankshaft, bearings, pressure test* 130
(cut out along the line and stick in place or enter 4 Sealing rings, pressure test* 70
the times by hand).
5 Crankcase leakage test,
test run 25
4.===Spare parts
6 Cylinder, piston, pressure test* 45
A separate illustrated parts list is available for the
7 Ignition system, contact* 25
STIHL 036 QS.
8 Fuel supply, tank vent,
test run 15
Last Technical Information on model 036:
9 Manifold or flange, pressure test 20
10 fo
Carburetor, check* 25
11 Tank housing with test run 40
12 Oil supply –
13 Oil pump, test run 30
14 Handle frame, front handle, handle
housing, shroud, each with test run 40
15 Rewind starter with test run 20
16 Clutch, test run 20
17 Chain brake, test run, check 35
operation with cutting attachment
18 Muffler 10
19 Air filter 5
20 Stop switch 10
* test run under load
✂
Waiblingen, November 16, 1995 Andreas Stihl - D1/MTK-al
1995 Andreas Stihl Technical Documentation Page 2 of 6
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