Carburadores y piezas para BMW R75

Motorcycle Carburetor Parts for BMW R75

Whether its everyday wear and tear or particularly hard riding experiences, parts of your bike will eventually need to be replaced. This also holds true of the components that come together to maintain the proper air to fuel ratio keeping your BMW running. If you’ve been experiencing backfiring, overheating, reduced power output, blackened exhaust, or difficulty getting your BMW to start, then it might be time to replace your carburetor.

What is the difference between OEM and aftermarket products?

Once the choice is clear and you do in fact need new parts for your BMW R75 motorcycle, the next step is deciding whether to purchase original manufacturer (OEM) or to get aftermarket carburetor parts. OEM parts come straight from BMW and are specified for your R75 motorcycle, whereas aftermarket items come from third party companies. They are simply an alternative to look into when deciding which product to purchase for your BMW motorcycle.

How are motorcycle carburetor parts for BMW constructed?

There are four main pieces that come together to regulate the fuel to air ratio entering your BMW:

  • The float system is a fuel reservoir on your BMW for fuel about to enter the engine. Fuel flows into a float chamber from the fuel tank and enters through a valve at the top of the chamber. The valve is opened and closed by a ball attached to a pivot arm that is triggered by the level of fuel in the chamber.
  • The Venturi is a straight steel pipe that is kinked in the middle to accelerate airflow coming from the intake. The acceleration lowers air pressure causing a vacuum that will force fuel out of the float chamber of your motorcycle and into the cylinders.
  • The fuel jet on your BMW is a calibrated opening on the side of the float chamber regulating how much fuel will enter the engine. It ejects fuel into a main well where baffles and air bleeds turn the fuel to vapor before it is shot through the Venturi pipe.
  • The throttle valve regulates the amount of airflow from the intake entering the engine. This determines the strength of the vacuum in the Venturi pipe and how much fuel will be used. The valve on your BMW is connected to the accelerator and is also adjustable to control the idle level.
How do you replace the carburetor on your BMW R75?
  • Before proceeding with anything, you need to disconnect the battery from your bike. There may be fuel present creating a potential fire hazard.
  • Next, take off the air intake followed by the linkage, choke, and fuel line.
  • Remove all mounting hardware and carefully remove the product from the housing on the bike. Keep it level to avoid spilling fuel. Empty the fuel out and remove the gasket from the intake manifold.
  • Clean off the gasket with a rag and replace it, then install the new unit. Reattach everything in the opposite order you removed it.