Like the Ryobi rj which we use as an example, most trimmer throttle cables thread through the carburetor choke plate and attach to the carburetor. Simply lifting and tilting the carburetor will release the throttle cable.
Unscrew fasteners holding the mount plate. Now that the carburetor is freed up, the only thing keeping you from removing the entire fuel system should be the fasteners holding the carburetor mount plate in place. Remove the fuel assembly from the trimmer. The fuel tank, carburetor plate, and carburetor will still be connected together by the system's fuel lines.
Remove them together before disturbing the fuel line arrangement. The trimmer fuel system is now removed, but it is very important to inspect and diagram the fuel line setup before continuing.
The fuel lines of the Ryobi rj connect the fuel tank, primer bulb, and carburetor through several holes in the choke plate that allow them to pass between. Other trimmers may be a little different, but their fuel line set-up is likely to be similarly complicated. Drawing a diagram of the fuel line arrangement can prevent mix-ups. Draw a diagram of the trimmer's fuel lines. Note the hole in the fuel tank in which the fuel filter attaches. Note the hole in the choke plate through which the filtered "in" line from the fuel tank passes to the carburetor.
Note where on the carburetor the "in" line connects. Note where the carburetor "out" line passes through the choke plate. Most primer bulbs make one fuel line connection longer than the other to help keep them straight. Note which primer bulb connection the "out" line from the carburetor attaches to.
Note which is the correct line to connect to the remaining primer bulb attachment site. Note which is the correct hole on the fuel tank through which the primer overflow line passes. When installed correctly, the fuel lines should be attached to their fittings tightly. Attempting to pull the fuel lines off their fittings risks breaking them.
Hint: An easy technique for removing trimmer fuel lines from their fittings is to use a flat head screwdriver. Place the screwdriver against the end of the fuel line and use some pressure to push it off the fitting. Remove all fuel lines from their fittings with a screwdriver. Remove the overflow return line from the fuel tank.
On the Ryobi rj, the overflow line leading from the primer bulb simply pulls out. Remove the fuel filter line. The trimmer fuel line attached to the fuel filter will often have a couple extra pieces holding it in place. In the case of the Ryobi rj that we use as an example, the fuel filter line has a small retaining ring on the outside of the fuel tank helping to hold the fuel filter in place.
The fuel filter retaining ring can be easily removed with a screwdriver. The rest of the old fuel filter line and fuel filter will just be thrown away. Instead of trying to pull the line through the fuel tank hole, it's much easier just to cut the line and push the old fuel filter into the tank. We've used a pair of flush cut diagonals to cut the line.
Replace the primer bulb. It's a smart idea to replace a the primer bulb along with other fuel system components. The plastic on the primer bulb is likely to wear at the same rate or faster as the fuel lines. The trimmer primer bulb can be held into place more than one way. The bulb on the Ryobi rj just snaps into and out of place.
All of the trimmer's old fuel lines should now be removed from the trimmer. Install the fuel filter line. A trimmer's fuel filter line will almost always be its trickiest line to replace. The line must be fed into its correct fuel tank hole through the inside of the fuel tank and then pressed firmly into position.
To be properly installed, the fuel filter must rest flush with the fuel tank. The next step will help to hold the fuel filter in its correct position. Install the fuel filter line retaining ring. If your trimmer's fuel filter line has a retaining ring, it needs to be installed correctly to help hold the fuel filter in place. Use a pair of pliers to press the retaining ring into position. Use your fuel line diagram to install the remaining new lines. To avoid serious injury, the operator and unit must be in a stable position while starting.
Page 9: Operating Instructions Clippings are thrown away from the operator. Move either in a forward- backward or side-to-side motion. Cutting shorter lengths produces the best results.
These procedures should also be a part of any seasonal tune-up. NOTE: Some maintenance procedures may require special tools or skills. If you are unsure about these procedures take your unit to any non-road engine repair establishment, individual or authorized service dealer. Single line can be used on either type of inner reel. Use Figure 15 to identify the inner reel you have. Place the choke lever in Position 2. Locate muffler front and the two 2 bolts securing it to the engine Fig.
Use a small brush to clean off the outside of the unit. Air-Cooled, 2-Cycle Stroke Operating RPM Print page 1 Print document 16 pages. Rename the bookmark. Delete bookmark? Cancel Delete. Delete from my manuals? Sign In OR. Don't have an account?
0コメント