Stihl MS 251 CB-E Support Question
Stihl MS 251 CB-E Support Question
Find answers below for this question about Stihl MS 251 CB-E.Need a Stihl MS 251 CB-E manual? We have 1 online manual for this item!
Question posted by Omahamudbull on February 27th, 2016
Throttle Linkage
how does the throttle linkage work
Current Answers
Answer #1: Posted by TommyKervz on February 28th, 2016 11:45 AM
TommyKervz
Member since:
January 10th, 2013 Points: 17,776,803
Member since:
January 10th, 2013 Points: 17,776,803
See page 17 of the instructions manual https://www.helpowl.com/manuals/Stihl/MS251CBE/191884
Related Stihl MS 251 CB-E Manual Pages
Instruction Manual - Page 2
...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 Super
73
10...3
1.1 Introduction
3
1.2 Safety Precautions
4
2.
QuickStop Super
75
10.3.3 Choke Rod
76
10.3.4 Throttle Rod
76
11. Rewind Starter
58
8.1 General
58
8.2 Fan housing
58
8.3 Pawls
59
8.4 ErgoStart...
Instruction Manual - Page 3
... 110
14. Servicing Aids
112
2
MS 231, MS 231 C, MS 251, MS 251 C Manual Fuel Pump 105
12.11.4 Manual Fuel Pump 107
12.11.5 Tank Housing
108
13. Contents
12.6 Servicing
the Carburetor
90
12.6.1 Metering Diaphragm 90
12.6.2 Inlet Needle
90
12.6.3 Pump Diaphragm
91
12.6.4 Lever on
Throttle Shaft
92
12.6.5 Adjusting Screws
93...
Instruction Manual - Page 17
...Idle jet bores or ports blocked
Low speed screw too rich or too lean
Setting of idle speed screw LA incorrect - throttle shutter completely closed
Tank vent faulty
Clean the carburetor
Reset low speed screw (L) correctly Reset idle speed screw (LA) ...Replace the clutch springs or install new clutch
Clutch spring hooks broken
Replace the clutch springs
16
MS 231, MS 231 C, MS 251, MS 251 C
Instruction Manual - Page 18
...- low power
Remedy
Clean air filter or replace if necessary
Throttle shutter not opened fully Tank vent faulty
Check throttle rod Replace tank vent
Fuel pickup body dirty
Install new pickup ... very low maximum speed
Check carburetor and choke shaft, service or replace if necessary
MS 231, MS 231 C, MS 251, MS 251 C
17 key in carburetor, replace if necessary
Leak on fuel hose from tank to...
Instruction Manual - Page 19
... easily, stalls Oil seals in fan housing dirty
Clean air inlet on fan housing
18
MS 231, MS 231 C, MS 251, MS 251 C Air inlets in fan housing blocked or cooling fins on the engine:
-
Fuel system...cylinder fins
Air inlet in engine damaged at idle speed, but operates normally at full throttle
Engine pan leaking or damaged (cracks)
Intake manifold damaged / bore blocked
Remedy Replace ...
Instruction Manual - Page 21
... is less
2 than a second) is measured in order if deceleration of the machine.
20
MS 231, MS 231 C, MS 251, MS 251 C
Troubleshooting, b 3.2
- The clutch drum must come to the eye. Remove the brake .../or parts of the chain braking time, i.e. With the chain brake released, open the throttle wide and activate the brake manually - arrows) and its seat (arrow).
-
The braking...
Instruction Manual - Page 28
... all other parts in that position. Adjusting brake cable
- Check the brake cable (1) and retainer (2), replace if necessary
MS 231, MS 231 C, MS 251, MS 251 C
27
clockwise to stretch the hose.
2310RA044 TG
2310RA057 TG
- Remove the throttle trigger, b 10.3
2310RA053 TG
- The brake band (1) must locate snugly against engine housing (arrows) and the clutch drum...
Instruction Manual - Page 30
Check position of fuel hose and correct if necessary, b 12.11.2
- Install the throttle trigger, b 10.3
MS 231, MS 231 C, MS 251, MS 251 C
29 if this is pushed fully into its seat (arrow).
: Insert and tighten down the screw (2) firmly.
2310RA059 TG
When lifting the tank housing make ...
Instruction Manual - Page 34
Moreover, the transition from idle speed to part or full throttle is in castings are the usual causes of the prescribed idle ...TG
6.2 Leakage Test
Defective oil seals and gaskets or cracks in place.
2310RA079 TG
a
2710RA164 TG 2310RA073 TG
MS 231, MS 231 C, MS 251, MS 251 C
33
Always perform the vacuum test first and then the pressure test. This can be modified as shown.
Remove ...
Instruction Manual - Page 73
... (3)
2
: Remove the handle molding (1). The lockout lever (arrow) may pop out.
-
note the installed position (arrow).
72
MS 231, MS 231 C, MS 251, MS 251 C Installing
: Attach the throttle rod (1) to the throttle trigger (2) and fit it in the guide (arrow).
1 1
2
2310RA166 TG
2310RA169 TG
: Pull the lockout lever (1) out of the guide (arrow) and disconnect it from...
Instruction Manual - Page 74
....
1
: Use a drift (2) to the lockout lever (arrow). MS 231, MS 231 C, MS 251, MS 251 C
73 - Check operation
2
1
- Check torsion spring and replace if necessary. QuickStop Super
Lubricate sliding and bearing points with torsion spring (2).
-
Push down the handle molding (1) until it from the throttle trigger (2).
2
2310RA176 TG
5902RA307 TG
2310RA177 TG
1
: Attach the...
Instruction Manual - Page 75
...
2310RA183 TG
2310RA180 TG
: Place the throttle trigger (1) in the rear handle so that the bent leg of handle molding (1) in the guide (arrows) or be below the drift - Check operation
- Press the lockout lever down the handle
2
molding (1) until it if necessary
74
MS 231, MS 231 C, MS 251, MS 251 C Reassemble all other parts in...
Instruction Manual - Page 77
...Pull the short circuit wire (1) and ground wire (2) out of the buffer (2).
76
MS 231, MS 231 C, MS 251, MS 251 C Check the choke rod and replace it if necessary
Installing
: Set the switch ...: Position the choke rod (1) in the choke shaft (2).
2310RA193 TG
- 10.3.3 Choke Rod
- Remove the throttle trigger,
b 10.2,
QuickStop Super, b 10.3
2310RA197 TG
1
: Engage the choke rod (1) in the ...
Instruction Manual - Page 78
...
- take care not to overstretch the fuel hose (2). All models
1
: Pass the throttle cable (1) through the opening (arrow) in the direction of the rear handle.
-
Check operation - MS 231, MS 231 C, MS 251, MS 251 C
77 Models with fuel hose (2) over the studs - Install the throttle trigger, b 10.2
1
1
2310RA294 TG
2310RA297 TG
2310RA199 TG
: Remove the fuel hose...
Instruction Manual - Page 84
Remove the throttle rod, b 10.3.4
1
: Push the grommet (arrow) of the air guide shroud.
- Put the wiring harness with ...wind a piece of string (1) (about 15 cm long) around the back of the guides (arrows).
- Remove the air guide shroud. MS 231, MS 231 C, MS 251, MS 251 C
83 Remove the fan housing, b 8.2
- Remove the carburetor, b 12.5
- 12.4 Air Guide Shroud
- Remove the carburetor carrier...
Instruction Manual - Page 85
...Insert and tighten down the screws (2) firmly.
- Coat the grommet with wiring harness, b 12.3
- Install the throttle rod, b 10.3.4
- Reassemble all other parts in
position and pull the grommet of
2
3
fuel hose (2)...(3) into the guides (arrows).
- Install the carburetor, b 12.5
84
MS 231, MS 231 C, MS 251, MS 251 C : Place the air guide shroud (1) in the reverse sequence.
2310RA327 TG...
Instruction Manual - Page 86
... (1) out of the cylinder and pull the air guide shroud away at the same time.
2310RA338 TG
MS 231, MS 231 C, MS 251, MS 251 C
85 Put the wiring harness with the wiring harness still attached, b 12.3
- Remove the throttle rod, b 10.3.4
: Pull the fuel return hose (1) out of the guides (arrows).
: Ease the air guide shroud...
Instruction Manual - Page 88
... the air guide shroud (1) over the stop . without a loop between the air guide shroud and grommet. Do not kink or pinch the fuel return hose.
-
MS 231, MS 231 C, MS 251, MS 251 C
87 Position the fuel return hose snugly - Install the throttle rod, b 10.3.4
- 1
1
2
2310RA343 TG 2310RA345 TG 2310RA348 TG
2
2
1
3
-
Instruction Manual - Page 90
...Models with nipple onto the carburetor's fuel stub (arrow).
- Set throttle trigger to full throttle
position, the throttle shutter must
be tested for leaks with the pump 0000 850 1300.
...fully home. Metering diaphragm or gasket
damaged, replace if necessary, b 12.6.1
1
2.
MS 231, MS 231 C, MS 251, MS 251 C
89 Check operation
- Test the tank vent if necessary, b 12.10.1
-...
Instruction Manual - Page 93
...the reverse sequence.
: Remove the retaining ring (1). : Pull off the lever (2).
92
MS 231, MS 231 C, MS 251, MS 251 C Reassemble in the reverse sequence.
12.6.4 Lever on the end cover (3) so that the...(1) back and forth until its pegs engage the holes in the
direction of the throttle and choke shaft levers.
2
2310RA267 TG 2310RA269 TG
2310RA271 TG
: Use a needle to be replaced.
...
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