WHAT IS IT WE ARE DEALING WITH?
1994 Trail Boss 250 2WD
Bought this awhile back with a cracked carburetor.
Replaced the carb with the supposed direct replacement (thanks, JMC)
The carb they ordered was a Mikuni Round Slide VM Series Carburetor 30mm Bore VM30-83
Bore Size: 30mm
Spigot O.D. Mounting: 40mm
Main Jet: 250
Pilot Jet: 40
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Air Filter:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
The carb jets were ALOT larger than stock jets so I swapped them out as I couldn't get the bike to start.
The jets in the carb are currently
Main Jet 155
Pilot Jet 30
Air Screw 1/4 Turn out from zero.
WHATS THE ISSUE?
Bike is hard to start must use starting fluid
Bike runs for with a high idle no matter how i adjust it if i go any lower it dies.
Idle screw is screwed all the way in.
The bike will only run for 10 minutes without dying... not sure if flooding or lean.... spark plug looks like it is burning clean....
1994 Trail Boss 250 2WD
Bought this awhile back with a cracked carburetor.
Replaced the carb with the supposed direct replacement (thanks, JMC)
The carb they ordered was a Mikuni Round Slide VM Series Carburetor 30mm Bore VM30-83
Bore Size: 30mm
Spigot O.D. Mounting: 40mm
Main Jet: 250
Pilot Jet: 40
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Air Filter:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
The carb jets were ALOT larger than stock jets so I swapped them out as I couldn't get the bike to start.
The jets in the carb are currently
Main Jet 155
Pilot Jet 30
Air Screw 1/4 Turn out from zero.
WHATS THE ISSUE?
Bike is hard to start must use starting fluid
Bike runs for with a high idle no matter how i adjust it if i go any lower it dies.
Idle screw is screwed all the way in.
The bike will only run for 10 minutes without dying... not sure if flooding or lean.... spark plug looks like it is burning clean....









