Onan 19.5 Zenith carburetor for CCKB-MS 2733 / J

[Guest]

Onan 19.5 Zenith carburetor for CCKB-MS 2733 / J Some service parts for Series 1408, part # 13262 still available but not included in service kit: C54-39-2-27 idle jet tube assembly C63-254 vent tube C66-133 discharge jet C85-129 float C3-132 fuel bowl C29-1593 throttle shaft assembly C21-219 throttle plate C108-294 choke shaft and lever assembly C102-139 choke plate C71-105-34 jet adjustment assembly Overhaul Kit # K2165 Can be purchased at: Bailey Motor Equipment 10501 South Orange Ave Orlando, FL 32824 Phone (407) 422-8134 Phone (800) 394-8134 bmeco@aol.com

[JimS]

Gary, So is one of those the part you needed to rebuild your carb? Jim Sommer

[StanD]

Posted for Mike Fox Zenith 13262-1408

[Guest]

C54-39-2-27 idle jet tube assembly JimS Indeed the above is the part I needed. HIGH SPEED (MAIN METERING) SYSTEM… The fuel for engine operation from off-idle to full throttle range is supplied from the fuel bowl through the main metering jet, metering–well and metering tube to the discharge nozzle in the venturi. As the fuel flows through the metering well and tube, it mixes with air entering through the well vent to provide the correct fuel-air mixture ratio for all engine speeds and loads. A series of air bleed holes in the wall of the metering tube permits the air from the well vent to enter the fuel flow below the level of the fuel in the float chamber. This reduces the average density of the fuel and enables it to flow freely at low suction. At high engine speeds (and high suction), the proportion of air to fuel flowing through the main metering system is reduced to provide the richer discharge mixture needed for peak performance.

[JimS]

Gary, Now you have me thinking about repairing my old carb. How did you remove the old part and how much does it cost? Jim

[Guest]

Here are the two parts I'm replacing. Install in the following order: 1. Left, C66-133, discharge jet, press fit depth (must check another carburetor for depth & orientation). 2. Right, C54-39-2-27 idle jet tube assembly, press fit flush to carburetor casting. See next picture for tube hole position.

[Guest]

Installing C54-39--2-27 idle jet tube assembly: With bowl down and flange facing installer, holes in tube should be to installer at 12 and 6 o'clock position. Holes face idle channel. Press flush to casting.

[Guest]

Preliminary adjustment: back out the idle jet screw about 1 1/2 turns and the main jet about 1 1/2 turns. Carb all done-works great.