Technical Information · issue 7 of 2000
New KW 85 PowerSweep
IssueTI 7/2000
Full text
Page 1 of 6
Technical Information
07.2000
New STIHL KW 85 PowerSweep - Series 4602
Typical applications of KW 85
. Sweeping sand, stones, gravel, leaves and . Contract cleaners
powder snow from lawns, concrete or asphalt
. General construction companies, civil
surfaces
engineering companies
. Keeping paths, sidewalks, sports grounds and . Clubs, schools, companies with large outdoor
golf courses clean areas
. Removing water from tennis courts and sports
. Municipalities
fields
. Removing standing water and lightweight debris
from construction sites The engine, controls and drive tube of the KW 85
are exactly the same as the FS 85 R. The loop
Typical users:
handle is the same as that of the FC 55.
. Landscape gardeners
. Farmers
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)m~ge 2 Technical Information 07.2000
Contents
1. Technical Description
2. Specifications
3. Accessories for User
4. Special Servicing Tools
5. Repairs
6. Spare Parts
1. Technical Description
1.1 Carburetor 1.4 Sweeper drum assemblies
. All position diaphragm carburetor with integral
fuel pump
. Only one adjusting screw (LD) 3 6 3
. Full-load fixed jet
. Manual fuel pump
. Balanced idle system (BIS)
1.2 Drive tube
223TI009 AM
Straight tube with rigid drive shaft supported in a 7
lubricated liner.
1.3 Gearbox The two sweeper drum assemblies (3) are identical.
Each sweeper drum is mounted on and driven by an
axle (6). The shield (7) protects the gearbox oil seals
from damage by long-fibered materials, e.g. blades
of grass.
2
4
223TI008 AM
5
1 1
. Worm gear lubricated for life, gear ratio 40 : 1
223TI010 KN
. Output shafts (1) on both sides of gearbox (2) for
sweeper drum assemblies.
Each sweeper drum assembly consists of the drum
(4) and a two-part sweeper belt (5) which is held
together by clips.
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Technical Information 07.2000 Page 3
2. Specifications
2.1 Powerhead 2.4 Fuel System
Single cylinder two-stroke Fuel tank capacity: 0.44 l (14.9 oz)
engine Fuel mix: Branded regular grade
Displacement: 25.4 cm3 gasoline (89 octane
Bore: 34 mm minimum) and brand-
Stroke: 28 mm name two-stroke engine
oil
Engine power to ISO 8893: 0.95 kW (1.3 bhp)
at 8,500 rpm Mix ratio: 50:1 with STIHL 50:1 two-
stroke engine oil
Idle speed 2,800 rpm
Cut-off speed range without 9,700 up to
2.5 Ignition System
sweeper drums (electronic 11,300 rpm
speed governor) Ignition module with integral electronic speed
governor
Rewind starter: Single pawl system;
Elastostart grip 3. Accessories for User
Starter rope: 3 mm dia., 800 mm
long (31.5 in)
Clutch:
- Diameter: 66.5 mm
- Clutch engages at: 4,000 rpm
2.2 Weight
Unit with sweeper drums 19.6 lbs (8.9 kg)
223TI012 KN
2.3 Idle speed screw LD
Standard setting: Open 2 full turns Deflector 4602 007 1001 protects the user from
splashes when sweeping liquids or wet materials.
4. Special Servicing Tools
Special servicing tools are listed in the service
manual for models FS 75, 80, 85, FC 75, HL 75.
The pliers for securing the clips on the sweeper belts
(after replacement) are available from retailers of
packaging materials accessories.
Such as: Grainger Industrial Supply
www.grainger.com
model: SRC-3423
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)m~ge 4 Technical Information 07.2000
5. Repairs
If the unit is started up in the course of repairs or . Pull axle (6) off the output shaft (1).
maintenance work, it is essential to strictly observe . Inspect gearbox (2) for signs of oil leaks
all local and national safety regulations and the (arrows).
safety precautions outlined in the owner’s manual.
. In the case of serious oil leaks, contact your
The service manual for models FS 75, 80, 85,
STIHL distributor.
FC 75, HL 75 can be used for servicing and repair
procedures on the KW 85 powerhead and drive
shaft.
6 3
5.1 Replacing the sweeper drums
223TI004 KN
223TI003 KN
. Push new sweeper drum (3) onto axle (6).
9 6
. Straighten ends of cotter pin and remove.
6 3
223TI007 KN
. Pull sweeper drum (3) off the axle (6).
223TI005 KN
10 10
8 6
. Fit new cotter pin (9) in end of axle (6) and bend
2 over the ends (10) as shown.
. Always replace sweeper drum assemblies in
pairs.
223TI006 KN
1 7
. Remove spring clip (7) and hitch pin (8).
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Technical Information 07.2000 Page 5
5.2 Replacing sweeper belts 5.3 Replacing sleeve on drive tube
. Remove the gearbox.
12 13
11 11
11
223TI000 KN
A
223TI013 KN
. Use a screwdriver to remove the clips (11).
. Remove the worn sleeve (12) and degrease the
5 11 4 end of the drive tube (13).
. Slide new sleeve (12) onto the drive tube (13) so
that distance A is 37.5 mm (1.5 in).
. Install the gearbox.
11 11
223TI001 KN
. Examine drum (4) for damage.
. Place new sweeper belt (5) on the
drum (4) and fit the new clips (11) in
position.
223TI002 KN
. Pinch the clips with special banding clip pliers.
. Always replace the sweeper belts in pairs.
Repeat the procedure on the other side.
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)m~ge 6 Technical Information 07.2000
5.4 Repair times
The specified repair times assume that the work is Code Type of Repair KW 85
performed by trained personnel in a properly 1 Crankcase, Crankshaft, 2.0*
equipped service workshop Crankshaft Bearings
The repair times are given in tenths of an hour 2 Replace Short Block 1.0
(0.1 = 6 minutes). 3 Crankcase, Gasket/Sealing 2.0
Note: This table for model KW 85 can be added to 4 Crankshaft Seals 1.0
the STIHL repair times table. (includes pressure and vacuum
testing)
5 Cylinder and/or Piston 1.0
6 Ignition Module 0.5
7 Fuel Hose 0.5
8 Replace Gear Box/Arbor Assy. 0.5
9 Repair/Rebuild Carburetor 0.8
10 Replace Carburetor, Carburetor 0.4
Jet (If tried to repair use code 9)
11 Front Handle, Throttle Control, 0.6
Throttle Cable
12 Recoil Starter 0.5
13 Clutch, Clutch Drum, Clutch Drum 0.7
Housing
14 Drive Tube, Drive Shaft 0.5
15 Muffler 0.4
16 Air Filter, Filter Cover, Tank Cap, 0.4
Fuel Filter, Tank Vent, Spark Plug,
Cutting Attachment,
Miscellaneous Minor Repairs
17 Stop Switch 0.5
18 Fuel Tank 0.4
19 Repair Gear Box, Gears, Arbor 0.8
Bearings
20 All Other Repairs 0.5
* Recommend to replace with short block (code 2).
6. Spare Parts
The illustrated parts list is included in the 03.99
issue of the microfiche and CD-ROM.
© 2000 Andreas Stihl AG & Co. Technical Documentation
Waiblingen D1/MTK-st 6842
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