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Most Recent Stihl MS 251 CB-E Questions
How To Install Oil Line On Styhl Ms251
(Posted by abelrick17 3 years ago)
Throttle Trigger
My throttle trigger is sticking when I pull it. My saw is running full tbrottle. Please tell me how ...
My throttle trigger is sticking when I pull it. My saw is running full tbrottle. Please tell me how ...
(Posted by derickallen2424 8 years ago)
Popular Stihl MS 251 CB-E Manual Pages
Instruction Manual - Page 2
...14
3.6 Carburetor
15
3.7 Engine
18
4.
Servicing
the AV System
66
9.1 9.2
9.3
9.3.1 9.3.2 9.4
AV Spring on Oil Tank 66
AV Spring on
Fuel Tank
66
AV Spring on
Handlebar
67
Stop Buffers
68
Buffers on
Machines with
Manual Fuel Pump 85
12.5 Carburetor
88
12.5.1 Leakage Test
89
RA_737_00_01_01
MS 231, MS 231 C, MS 251, MS 251 C
q
© ANDREAS STIHL AG & Co.
QuickStop...
Instruction Manual - Page 4
... of any replacement parts. The manual lists all the repair and servicing procedures specific to identify the tools in position with two screws (1) and washers.
Service manuals and all assemblies.
Symbols are made considerably easier if the machine is clamped in the text and pictures for all technical information bulletins are intended exclusively for engineering changes...
Instruction Manual - Page 5
... removal.
The chapter on small parts. They can cause serious or fatal accidents. Preparations for servicing
Remove the chain sprocket cover, saw chain and guide bar before re-installing - Spilled fuel must be identified by hand, to ensure the tightness of the fuel system. Always wear suitable protective gloves for operations in the instruction manual. fuel hoses can be...
Instruction Manual - Page 13
...be pulled out almost without resistance (crankshaft does not turn)
...Models with ErgoStart
Guide peg on carrier worn
Install new carrier
Spring loop in spring housing not Attach spring loop ... replace pawls and torsion springs if necessary
Lugs on pawl or pawl itself is difficult to carrier
Spring in spring housing fatigued Install new spring housing
12
MS 231, MS 231 C, MS 251, MS 251 ...
Instruction Manual - Page 47
..., MS 231 C, MS 251, MS 251 C Remove the setting gauge.
-
Troubleshooting, b 3.5 Installing
1
1
2
N
S
1
: Position the retainer (1) against the cylinder and attach its pegs to the ignition module (1).
: Press the ignition module (1) against the stop (arrow) and its crimped side faces the screw head.
: Fit the screw (2) with washer - Check the spark plug boot and replace if necessary...
Instruction Manual - Page 62
...Install the starter rope, b 8.6
- Remove the fan housing and the segment, b 8.2
Models with ErgoStart -
Check the rope rotor and replace if necessary.
- Install... TG
- MS 231, MS 231 C, MS 251, MS 251 C
61 Remove the ErgoStart, b 8.4
All models
1
2
... the ErgoStart, b 8.4
All models - Tension the rewind spring, b 8.7
- Reassemble all other parts in the reverse sequence.
8.6 ...
Instruction Manual - Page 87
... fuel pump (1) with
STIHL press fluid to simplify installation, b 14
2 : Fit the grommet (1) in position.
: Push the new fuel hose (2) through the air guide shroud's opening, wind a piece of string (1) (about 15 cm long) around the back of the air guide shroud.
- Remove the grommet, check and replace if necessary.
86
MS 231, MS 231 C, MS 251, MS 251 C Coat manifold...
Instruction Manual - Page 88
...STIHL press fluid to pull the manifold flange (1) through the intake opening while pushing the air guide shroud (3) against the manifold flange.
- Do not kink or pinch the fuel return hose.
- without a loop between the air guide shroud and grommet.
Install... (1) of the air guide shroud.
: Ease the air guide shroud (1) over the stop . MS 231, MS 231 C, MS 251, MS 251 C
87 Position the...
Instruction Manual - Page 96
... home the limiter cap until it engages. Use the idle speed screw (LA) to set engine speed to 13,000 rpm. (starting with step 1.
3. Use the high speed screw (H) to set the engine's maximum speed to 2,800 rpm.
5.
MS 231, MS 231 C, MS 251, MS 251 C
95 This speed cannot be fitted on the screwdriver 5910 890 2306 to carry...
Instruction Manual - Page 98
...the carburetor carrier (3) against the studs (2). Coat manifold flange with STIHL press fluid, b 14
: Use the ends of the string... pulling the carburetor carrier away at the same time.
- Installing
1
2310RA291 TG
2 2
2
2310RA287 TG
: Pull the ... guide (arrow) and put it to one side.
1
-
MS 231, MS 231 C, MS 251, MS 251 C
97 Remove the string. Check the intake manifold and replace ...
Instruction Manual - Page 101
...engages the peg (arrow).
1
2310RA370 TG
12.10.2 Removing and Installing -
If the pressure drops, the leak must be located and the faulty part replaced.
- Reassemble in
alignment.
2310RA368 TG
1
: Take out the ... a pressure of new tank
1
vent with STIHL press fluid,
b 14
2 - Always install a new tank vent.
100
MS 231, MS 231 C, MS 251, MS 251 C Coat sealing ring of 0.5 bar.
Instruction Manual - Page 104
...STIHL press fluid to simplify assembly, b 14
: Line up straight face of connector (1) with QuickStop Super
: Position the fuel hose (1) so that it is below the brake cable (2), as shown in the engine... the guide (arrow).
: Push the fuel hose (1), connector (2) first, into the fuel suction hose so that it into the housing bore as far as stop - MS 231, MS 231 C, MS 251, MS 251 C
103...
Instruction Manual - Page 107
...
return hose (1) between the
ribs (arrows) and push it is properly seated. Use STIHL press fluid to the left as stop.
The fuel return hose (1) must be under the brake cable (2).
: Install the fuel hose (1), b 12.11.2
106
MS 231, MS 231 C, MS 251, MS 251 C
Installing
: Push the connector (1) into the
1
grommet (4).
1
2310RA398 TG
2310RA395 TG
: Remove the...
Instruction Manual - Page 108
....11.4 Manual Fuel Pump
Installing
- Check operation of manual fuel pump, b 12.11.4
- Check the oil fuel pump and replace if necessary.
: Push the fuel return hose (1) onto the long nipple (2) and elbow connector (3).
: Push the fuel suction hose (4) onto the short nipple (5) and the carburetor connector (6).
- MS 231, MS 231 C, MS 251, MS 251 C
107 - Reassemble all other parts in...
Instruction Manual - Page 112
...MS 231, MS 231 C, MS 251, MS 251 C
111 Jaws (No. 6) 28 Puller 29 Stud puller M8 30 Puller 31 Setting disk
32 Hook
Part... clutch shoes Holding saw for releasing only. Description
19 Flange 20 Torque wrench 21 Torque wrench 22 Installing tool 10
- No...test 0.5 to 18 Nm 6 to 80 Nm Installing hookless snap rings in piston Sleeve for installing tool 10 Adjusting the carburetor IS-P screws Detaching...
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