How to Replace a Primer Bulb
Replacing primer bulbs in small engines is one of the most common types of tool repairs, and this article explains professional steps for primer bulb replacement in two engine design types.
How to Replace Trimmer Fuel Lines
Grass trimmers commonly need their fuel lines and other system comenents replaced, and this article offers professional repair advice for performing a trimmer fuel line replacement.
Can you please tell me where I can purchase a new cutter head assembly. The whole thing not just the reel?
It is a Makita BBC201 The outer blue plastic housing is broken.
This could simply be a carburetor adjustment issue. Leaning out the hi needle will increase the RPM's. I would take it to a different shop and ask them to adjust the carb. I don't recommend adjusting a carb yourself as irreversible damage can occur to the engine if the carb is adjusted too lean.
If the trimmer is hard to start or runs poorly when it is running then the carb will likely need to be cleaned or rebuilt. We have an article and video that shows how to clean a carb. You can find it here...