Technical Information · issue 25 of 2009
New STIHL FS 310 Brushcutter
IssueTI 25/2009
Full text
Page 1 of 9
STIH)
Draft
USA only – Market Launch
Technical Information 25.2009
New STIHL FS 310 Brushcutter – Series 4180
Contents
1. Technical Description
2. Specifications
3. Cutting Tools
4. Accessories
5. Service Accessories
6. Service Note
The new STIHL FS 310 brushcutter low-emission
engine and paper air filter filter is the latest addition
to the line of brushcutter.
The areas of application are the same as those for
the FS 350.
TI_25_2009_30_01_01.fm englisch / English
)m~ge 2 Technical Information 25.2009
1. Technical Description
1.1 Air Filter System with Paper Element
The air filter system with paper element and
compensator guarantees a long filter life. This
allows long periods of uninterrupted operation.
3 1 2
273TI003 KN
The toolless clamp enables the bike handle to be
easily adjusted to suit the user's height and reach.
The bike handle can be swung in line with the drive
tube and folded down to save transport and storage
space.
273TI021 KN
The new air filter system consists of: Paper air
1.3 Fuel Tank and Tank Cap
filter (1) 4134 141 0300, filter cover (2)
4180 140 1002 and filter housing (3) The large, translucent fuel tank enables the user to
4180 140 2803. check the fuel level from outside.
1.2 Handle System with 4-Point Antivibration
System
273TI002 KN
The tank cap with hinged grip is easy to open and
close for simpler refueling.
The 4-point antivibration system effectively absorbs
the vibrations of the engine and cutting attachment.
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Technical Information 25.2009 Page 3
2. Specifications Carburetor adjustment
C1Q-S133 A carburetor (4180 120 0606) with
2.1 Powerhead compensator
STIHL single cylinder low-emission engine Basic setting without limiter caps
Displacement: 2.22 cu.in (36.3 cc)
Low speed screw L: Open 2 full turns
Bore: 1.69 in (43 mm)
Stroke: 0.98 in (25 mm) High speed screw H: Open 33/4 turns
Engine power to ISO 1.9 bhp (1.4 kW) at
8893: 8,500 rpm
Torque: 1.25 ft/lb (1.70 Nm) at Standard setting with limiter caps
6,500 rpm Low speed screw L: Open 3/4 turn
Idle speed: 2,800 rpm (no further than stop)
Rewind starter: Single pawl system
Starter rope: 0.120 in dia., 33.50 in High speed screw H: Open 3/4 turn
long (3.0 mm dia., 850 (no further than stop)
mm long)
Clutch
Clutch engages at: 3,700 rpm 2.4 Gearhead
Cut-off range without
Gear ratio: 1:1.4
cutting attachment
(electronic speed Lubricant: STIHL gear lubricant for
governor): 10,500 +/- 200 rpm brushcutters
Initial capacity: 0.52 oz (15 g)
Valve clearance
Inlet valve: 0.004 in (0.10 mm) Re-lubrication: up to 0.18 oz (5 g)
Exhaust valve: 0.004 in (0.10 mm)
2.5 Weight
2.2 Ignition System Dry, without cutting attachment and deflector
Ignition module: with integral electronic FS 310: 15.9 lb (7.2 kg)
speed governor
Spark plug (resistor
type): NGK CMR 6 H
Electrode gap: 0.020 in (0.5 mm)
2.3 Fuel System
The STIHL low-emission features mixture
lubrication and must be run on a 50:1 mixture of
gasoline and engine oil.
Fuel: see instruction
manual
Fuel tank capacity: 24.0 fl.oz (0.71 l)
Carburetor:
All position diaphragm carburetor with integral fuel
pump
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)m~ge 4 Technical Information 25.2009
3. Cutting Attachments
The following cutting attachments are approved
1 STIHL SuperCut™ 40-2
mowing head 4003 710 2142
1 2 2 STIHL AUTOCUT® 40-2
mowing head 4003 710 2189
3 STIHL TrimCut™ 41-2
mowing head 4003 710 2108
3 4
4 STIHL PolyCut™ 40-3
mowing head 4111 710 2190
5 Grass cutting blade 230-4 4000 713 3801
5 6 6 Grass cutting blade 255-8 4000 713 3802
7 Circular saw blade 200-22
(chisel tooth) 4119 713 4200
8 Circular saw blade 200-44
7 8 (scratcher tooth) 4000 713 4200
9 Brush knife 300-3 4119 713 4100
9
273TI026 KN
All the cutting attachments listed above must be
used with the recommended deflector and harness
(see catalog: "Cutting Attachments, Parts &
Accessories").
4. Accessories
Description Part No. Application
Transport guard for 4116 790 3901 Brush knife 300-3
metal cutting attachments Grass cutting blade 230-4, 255-8
4119 790 3906 Grass cutting blade 230-4, 255-8
4119 790 3901 Circular saw blade 200-44 (scratcher tooth)
Circular saw blade 200-22 (chisel tooth)
Nylon line for mowing see catalog: "Cutting Attachments, Parts & Accessories"
heads
Starter rope 0000 930 2211 Rewind starter
(3 mm x 200 ft)
STIHL gear lubricant for Gearhead
brushcutters
- 3 oz (80 g) tube 0781 120 1117
- 8 oz (225 g) tube 0781 120 1118
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Technical Information 25.2009 Page 5
5. Servicing Accessories
5.1 Special servicing tools
Description Part No. Application
Assembly drift 1110 893 4700 Pressing out clutch drum
Press sleeve 1120 893 2400 Removing clutch drum bearing
Press sleeve 1108 893 2405 Installing clutch drum bearing
Other special servicing tools are listed in the following service manuals:
Assembly Service manual
Powerhead, control handle STIHL Series 4180 Powerhead
Handle, drive tube, gearhead and STIHL FS 120, 200, 300, 350, 400, 450, FR 350, 450
deflector
5.2 Servicing aids
Description Part No. Application
Set of gaskets 4180 007 1015 Engine
Carburetor parts kit 4180 007 1061 Carburetor
Lubricating grease 0781 120 1111 Oil seals
8 oz (225 g) tube
Press fluid OH 723
3.4 fl oz (100 ml) bottle 0781 957 9000 Rubber elements of AV system
Dirko HT sealant, red 0783 830 2000 Sealing engine pan/cylinder, cylinder/cam gear
3.2 oz (90 g) tube cover
Standard commercial, solvent- Cleaning the crankshaft stub
based degreasant (see TI 25.2005)
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)m~ge 6 Technical Information 25.2009
6. Service Note forwards.
If the machine is going to be started in the course of . Pull off the rubber buffers (3).
repairs, it is essential to observe all country-specific
safety regulations and the safety precautions in the
instruction manual.
6.1 Repairing the Antivibration System
6.1.1 Removing
. Remove the control handle and bike handle.
273TI007 KN
1
. Push the AV housing forwards.
. Pull the rubber buffers off the fan housing.
. Check the rubber buffers for any damage and
replace if necessary.
273TI005 KN
6.1.2 Installing
1
. Press in the locking tabs (arrows) and remove b
the cover (1). a
273TI008 KN
b
1
. Fit the rubber buffers (1) in the AV housing.
273TI018 KN
. Coat the bores (a) and pegs (b) with press fluid.
. Push the AV housing towards the powerhead
. Pry the retainers out of the AV housing. and engage the pegs (b) in the bores (a).
. Take the throttle cable out of the AV housing.
1
b
3 a
2
1
a
b
273TI009 KN
1
273TI006 KN
3
. Fit the rubber buffers (1) in the AV housing.
. Loosen the screw (1) and push the support (2) . Coat the bores (a) and pegs (b) with press fluid.
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Technical Information 25.2009 Page 7
. Push the support towards the AV housing and
engage the pegs (b) in the bores (a).
2
2 3
273TI012KN
b 2
a
. Take out the screws (2) and remove the fan
273TI028 KN
housing.
. Remove the circlip (3) from the clutch drum
stub.
. Push the support in the direction of the AV
housing until the gaps a and b are 0.47 in
(12 mm).
1
. Tighten down the screw (1) to a torque of 3.32
ft/lb (4.5 Nm).
. Fit the throttle cable and retainers.
. Fit the cover and push it down until the locking
tabs snap into position.
. Install the bike handle and control handle.
273TI013 KN
6.2 Repairing the Clutch Drum and Bearing
. Use assembly drift (1) 1110 893 4700 to press
the clutch drum out of the ball bearing.
6.2.1 Removing
. Remove the antivibration system.
1
273TI014 KN
273TI011 KN
. Loosen the screw (1). . Take the circlip out of the fan housing.
. Pull the powerhead off the drive tube.
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)m~ge 8 Technical Information 25.2009
1
1
273TI016 KN
273TI019 KN
. Use press sleeve (1) 1120 893 2400 to press . Use assembly drift (1) 1110 893 4700 to press
the ball bearing out of the fan housing. the clutch drum into the ball bearing as far as
stop.
6.2.2 Installing
. Fit the circlip on the clutch drum stub.
. Mount the fan housing to the powerhead.
1 . Push the powerhead onto the drive tube and line
in up.
. Tighten down the fan housing screws to a torque
of 6.23 ft/lb (8.5 Nm).
. Install the antivibration system – adjust AV gap.
273TI015 KN
6.3 Leakage Test
Damaged oil seals and gaskets or cracks in castings
. Use press sleeve (1) 1110 893 2405 to press cause leaks. Such faults allow supplementary air to
the ball bearing into the fan housing as far as enter the engine and upset the fuel-air mixture.
stop. This may prevent proper lubrication or cause the
. Fit the circlip in the fan housing. engine to fail completely.
The engine can be tested for leaks with the special
pump.
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Technical Information 25.2009 Page 9
6.4 Service Note and Tightening Torques
Repair Description FS 310
The following service manuals are available for
servicing, repairs and tightening torques: 1 Replace short block. 50
2 Replace crankcase, crankcase
Assembly Service manual gasket or re-seal crankcase. Includes
Powerhead, control STIHL Series 4180 air leak test. 100
handle Powerhead 3 Replace crankshaft main bearing(s).
Handle, drive tube, STIHL FS 120, 200, 300, Includes air leak test. 100
gearhead and deflector 350, 400, 450, 4 Replace crankshaft seal(s). Includes
FR 350, 450 air leak test. 70
5 Replace cylinder and/or piston.
6.5 Repair Times Includes air leak test and repair of
The specified repair times assume that the work is components causing failure. 100
performed by trained personnel in a properly 6 Replace ignition module or flywheel.
equipped service workshop. Includes stop circuit test. 25
Repair times are quoted in minutes. The following 7 Replace fuel tank line, tank vent, or
table for the FS 310 can be added to the STIHL fuel pick-up body. 15
repair times tables. 8 Replace intake manifold or intake
flange. 20
9 Repair or replace carburetor.
Includes fuel system testing. 30
10 Repair throttle control 25
11 Repair or replace rewind starter 15
12 Repair or replace clutch, clutch shoes
or clutch springs 30
13 Replace muffler 15
14 Replace air filter or filter housing 15
15 Repair or replace stop switch.
Includes circuit testing 20
16 Replace clutch housing. 20
17 Replace drive shaft and/or drive tube. 20
18 Replace bearing liner in drive tube. 20
19 Replace limit stop or deflector. 15
20 Replace gearbox assembly. 15
21 Replace fuel tank. 15
22 Adjust valve clearance. 15
23 Clean exhaust valve with STIHL de-
carbonizing liquid. Includes leak-
down test. 25
24 Replace intake or exhaust valve.
Includes. leak-down test. 100
25 Replace gears and/or bearings in
gearbox. 25
40 Miscellaneous repairs and other
repairs not listed. 15
45 Handling allowance only-no labor. 10
50 No labor. 0
© ANDREAS STIHL AG & Co. KG, 2009 Technical Documentation
D1/MTK-bl
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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.