Fuel system parts

Note: free shipping is for U.S. addresses only.

1. Custom jets for the WG carburetor    2. Carburetor rebuild    3. External pulse-port kit

1. Custom jets for the WG carburetor

See the high altitude modification page for information and how to install the correct sized jet for your application.  The most common high altitude jet is #116 for 80cc engines or #125 for 130cc engines.  Minimum jet size is #098.  These jets are not mass produced but custom machined in our shop from blanks made by the Walbro factory in Japan.  These jets cost more but are made in our shop to a tolerance of 0.01 mm.  The factory made jets may vary about 0.02 mm i.e., size #002 .  Note: with the FSM installed (available soon after testing), jet size in all paramotors can be dramatically reduced, eliminating midrange and wide open throttle problems.

WG-8 carburetor details

jet size desired

2. Carburetor rebuild

Ultrasonically cleaned & rebuild of a Walbro or Tillotson diaphragm carburetor – includes replacement of the parts supplied in the OEM kits and a new metering lever spring, if yours is out of specification.

After assembly, the pop-off and rest pressures will be measured to ensure that they are within specifications.  Adjustable jets will be set to the factory recommended values. 

Note: Rebuilding your carburetor may not fix other underlying fuel problems, such as poor quality gasoline, clogged/defective inline filters, incorrect jetting, leaking fuel lines, etc.  The carburetor must be adjusted for your climate, altitude, and engine condition to work properly.  This page has the details.

Walbro WG-8 carburetor ultrasonically cleaned

Photo of an ultrasonically cleaned carburetor.  No other process can remove the accumulated gum and grime like an ultrasonic bath (the same used to clean firearm parts).  Invisible deposits inside the small openings in the carburetor affect the jet sizing.  A surface film of 0.01mm is enough to change the air-fuel ratio and ultrasonic cleaning of the carburetor is a good idea if pilots experience fuel abnormalities when flying.

Carburetor must not be damaged e.g., bent low speed idle jet, throttle plate, choke lever or plate, etc. and be complete.  There is an extra charge for any missing or damaged parts that are not part of a standard rebuild.

Shipping your carburetor:  wrap the carburetor with bubble wrap or heavy paper and put in a a small box.  Do not ship in a bag.  Send it USPS 1st Class small package, USPS Priority Mail, UPS, or FEDEX to the address on the contact page.  Turn around time can be weeks if we are busy training or traveling.  We will let you know.


of carburetor

3. External pulse port kit

This kit has what is needed to create an external pulse port of the best size for any paramotor.  Instructions

External pulse port kit

Includes: (1) 6mm (1/4") OD, 4mm (5/32") ID brass barbed fitting, (1) M6 x 1mm tap, (1) 5.0mm drill bit