This is a genuine OEM replacement part designed for use with Makita power tools. It is made out of rubber and it is sold individually. By pressing on the purge bulb, it will force fuel into the fuel line from the fuel tank into the carburetor. Once the carburetor is full of fuel, the excess fuel will be purged back into the tank in the fuel return line. At some time the primer will lose its elasticity or crack and need to be replaced.
Purchased this Robin branded (Subaru Commercial) trimmer in 1994 and this was the first time I had performed any maintenance on the trimmer. The maintenance was needed because the fuel tank started leaking gas from around the tank hose. Upon taking the engine cover off (removed 4 screws), I realized the hoses were no longer pliable and ha
... Read morerd become hardened. The air filter had disintegrated and half of it was gone. The parts were very simple to replace. Upon replacement, I primed the engine and it started on the second pull, as it has for the past 22 years.
I was so glad to have found this website. The parts were very reasonable and the catalog was very easy to search. It helped that I could see the parts, and find the recommended parts visually. The previous comments were great. Thank you!
Work in a well-ventilated area if there is any gas in tank or bulb.
Recommend wrapping unit with a rag to absorb any minor spillage.
Removed casing around pull cord using medium Philips screwdriver. The pull cord mechanism comes off with the casing.
Note position of fuel lines. You can gently pull the tight one out from
... Read morethe tank to get some slack.
Remove two fuel lines from the bulb.
Remove bulb from casing by twisting or squeezing on-bulb clips to pull it off.
Attach new bulb to casing by pressing it into mounting hole.
Reattach fuel lines.
Gently reposition casing into its original position. You may need to tug on pull cord to get it to realign.
Test bulb before tightening screws by pressing once or twice. It should fill with no leaks.
Tighten casing screws.
Test for leaks
Get that woolly lawn back in shape!
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Primer bubble dry rotted / trimmer head just wore out
Lucky I had some spare fuel line lying around. 5 screws and the cover was off . Primer just snaps into place.
The trimmer head came with more than enough parts and was easy swap. not sure why I waited so long to replace? Machine is 16 yrs old and wore the plastic \"bump\" head until the spring came through. The trimmer head include
... Read mores installation instructions.
Removed old primer bulb.
Installed new bulb.
Put in new air cleaner filter.
Reassembled cover.
Started Trimmer and it Worked Great!!!!
Thanks ereplacement parts!!
Took off the cover (two screws) to get access to the primer bulb assembly.
Used a screwdriver to pry out the assembly.
Pinched fuel lines with needle nosed pliers.
Snapped new bulb assembly in.
Re attached fuel lines to new assembly.
Put back cover and replaced with the two screws removed.
Easy project
... Read moreGǪ..very low skill level required
Popped the cover off of the carburetor, unclipped the old primer bulb, reinserted the gas lines into the new one and clipped it back into place. Really easy fix!
1) Removed Philips screws and side of blower,
2) Disconnected fuel lines and snapped primer pump out.
3) Used a 1/2\" 12 point socket which fit over the bulb and makes contact with the bulb base to press the primer bulb unit into the blower side. This method allows the primer bulb unit to be inserted straight, without putting
... Read more any pressure on the bulb.
4) Reconnected the fuel lines and attached the blower side.
Removed cover of weed eater. Pull gas lines off primer ball. Replaced new primer ball. Put back together
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