Stihl MS 251 Instruction Manual - Page 102

Fuel Intake, 12.11.1 Pickup Body, 12.11.2 Fuel Hose, Use hook 5910 893 8800

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2310RA372 TG 2310RA373 TG - Open the tank again and drain it. - Dispose of fuel properly in accordance with environmental requirements, b 1 1 1 - Open the tank cap. 2310RA365 TG : Insert and tighten down the screw (1) firmly. - Reassemble all other parts in the reverse sequence. : Take out the screw (1). 1 2310RA371 TG 12.11 Fuel Intake 12.11.1 Pickup Body Any impurities mixed with the fuel are retained by the pickup body (filter). The fine pores of the filter eventually become clogged with minute particles of dirt. This restricts the passage of fuel and results in fuel starvation. : Use hook 5910 893 8800 to remove the pickup body (1) from the fuel tank. Do not overstretch the fuel hose. - Pull off the pickup body (1), check it and replace if necessary. 1 : Take out the screw (1). In the event of problems with the - Reassemble in the reverse fuel supply system, always check sequence. the fuel tank and the pickup body first. 1 - Troubleshooting, b 3.6 or b 3.7 12.11.2 Fuel Hose - Open the tank cap. Clean the fuel tank if necessary. - Open the tank cap and drain the tank. - Pour a small amount of clean gasoline into the tank. Close the tank and shake the saw vigorously. - Remove the pickup body, b 11.1 - Remove the carburetor carrier, b 12.8 1 : Take out the screws (1). - Remove the air guide shroud, b 12.4 Models with manual fuel pump, b 12.4.1 2310RA374 TG MS 231, MS 231 C, MS 251, MS 251 C 101

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101
MS 231, MS 231 C, MS 251, MS 251 C
:
Insert and tighten down the
screw (1) firmly.
–
Reassemble all other parts in the
reverse sequence.
12.11
Fuel Intake
12.11.1
Pickup Body
Any impurities mixed with the fuel
are retained by the pickup body
(filter). The fine pores of the filter
eventually become clogged with
minute particles of dirt. This restricts
the passage of fuel and results in
fuel starvation.
In the event of problems with the
fuel supply system, always check
the fuel tank and the pickup body
first.
– Troubleshooting,
b
3.6 or
b
3.7
Clean the fuel tank if necessary.
–
Open the tank cap and drain the
tank.
–
Pour a small amount of clean
gasoline into the tank. Close the
tank and shake the saw
vigorously.
2310RA365 TG
1
–
Open the tank again and drain it.
–
Dispose of fuel properly in
accordance with environmental
requirements,
b
1
–
Open the tank cap.
:
Use hook 5910 893 8800 to
remove the pickup body (1) from
the fuel tank.
Do not overstretch the fuel hose.
–
Pull off the pickup body (1),
check it and replace if necessary.
–
Reassemble in the reverse
sequence.
12.11.2
Fuel Hose
–
Open the tank cap.
–
Remove the pickup body,
b
11.1
–
Remove the carburetor carrier,
b
12.8
–
Remove the air guide shroud,
b
12.4
Models with manual fuel pump,
b
12.4.1
1
2310RA371 TG
:
Take out the screw (1).
:
Take out the screw (1).
:
Take out the screws (1).
2310RA372 TG
1
2310RA373 TG
1
2310RA374 TG
1
1