Difficulty
Easy
Steps
6
Time Required
10 - 20 minutes
Sections
1
- Fuel Lines
- 6 steps
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BackEcho SRM-225 Trimmer
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Introduction
NOTE: ethanol-free fuel is available at most hardware stores in pre-mixed cans and will prolong the life of the fuel system components
What you need
Step 1
Remove the air filter
- Make sure to empty any gas in the tank into an appropriate container before beginning to work on equipment.
- Twist knob on air filter counter clockwise and remove.
Make sure to empty any gas in the tank into an appropriate container before beginning to work on equipment.
Twist knob on air filter counter clockwise and remove.
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Step 2
Disconnect and remove fuel lines
- Disconnect fuel lines from carburetor by pulling firmly. Lines may be gently pried off of carburetor if stuck.
- After lines are disconnected, pry grommet from the gas tank. This can be done with a flat head screwdriver as shown or a pair of pliers.
Disconnect fuel lines from carburetor by pulling firmly. Lines may be gently pried off of carburetor if stuck.
After lines are disconnected, pry grommet from the gas tank. This can be done with a flat head screwdriver as shown or a pair of pliers.
Step 3
Inserting new grommet with fuel lines
- It is going to be a tight fight so be sure to oil or grease the perimeter of the grommet to ease installation
- Insert the fuel filter through small hole in the gas tank.
- Use fingers to reset grommet into the fuel tank. It can be tough but it will squeeze in with enough effort.
It is going to be a tight fight so be sure to oil or grease the perimeter of the grommet to ease installation
Insert the fuel filter through small hole in the gas tank.
Use fingers to reset grommet into the fuel tank. It can be tough but it will squeeze in with enough effort.
Step 4
Reattaching fuel lines
- Attach the black line firmly to the hose attachment towards the inside.
- Attach the yellow line firmly to the outer hose attachment.
- The black hose with the white attachment slides right into the area circled in the picture. As this is just a vent cap, it is not imperative that it be placed in this spot if you are not able to. Just be sure that the vent hose is not kinked.
Attach the black line firmly to the hose attachment towards the inside.
Attach the yellow line firmly to the outer hose attachment.
The black hose with the white attachment slides right into the area circled in the picture. As this is just a vent cap, it is not imperative that it be placed in this spot if you are not able to. Just be sure that the vent hose is not kinked.
Step 5
Replacing purge bulb
- Loosen the two screws holding on the carburetor with a T27 Torx bit turning it counter clockwise.
- The pictures show the air filter and filter housing removed
- Be sure not to lose or tear the gasket between the carburetor and the intake manifold. It will need to be replaced if either occurs
- Remove the four screws holding on the old purge bulb by turning counter clockwise.
- Remove plate holding on purge bulb.
- The old purge bulb should come right out and replace it with the new. Be sure the rim of the new purge valve is properly seated when reinstalling
- Reinstall the purge bulb plate and securely tighten the four screws. Be sure not to overtighten these screws as they can easily strip
- Now reinstall the air filter housing, carburetor, and gasket in the same manner they were removed. Finally, reinstall the air filter and air housing cover.
Loosen the two screws holding on the carburetor with a T27 Torx bit turning it counter clockwise.
The pictures show the air filter and filter housing removed
Be sure not to lose or tear the gasket between the carburetor and the intake manifold. It will need to be replaced if either occurs
Remove the four screws holding on the old purge bulb by turning counter clockwise.
Remove plate holding on purge bulb.
The old purge bulb should come right out and replace it with the new. Be sure the rim of the new purge valve is properly seated when reinstalling
Reinstall the purge bulb plate and securely tighten the four screws. Be sure not to overtighten these screws as they can easily strip
Now reinstall the air filter housing, carburetor, and gasket in the same manner they were removed. Finally, reinstall the air filter and air housing cover.
Step 6
Replacing vent cap gasket
- Unscrew and remove gas cap. The plastic piece bends that keeps it attached and will pull out of tank.
- Pry old gasket out with screw driver or needle nose pliers.
- Replace with new gasket using fingers to position it.
Unscrew and remove gas cap. The plastic piece bends that keeps it attached and will pull out of tank.
Pry old gasket out with screw driver or needle nose pliers.
Replace with new gasket using fingers to position it.
To reassemble your device, follow these instructions in reverse order. Be sure all re-used gaskets are in good shape and reinstalled in the same manner as they were removed.
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Michael
Member since: 10/11/2014
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Team
USF Tampa, Team 1-20, Donnelly Fall 2014
Member of USF Tampa, Team 1-20, Donnelly Fall 2014
USFT-DONNELLY-F14S1G20
1 Member
1 Guide authored
dutra - Mar 10, 2017
Reply
Thank you so much!!! Helped me a lot!
billyboy0902 - Apr 24, 2018
Reply
Really good information thanks.
Amy Knight - Sep 2, 2022
Reply
all but,…. how long are the fuel lines need to be? Because they can’t all be the same length
