Jet inside secondary diaphragm tube 09492-40005 Jul 19, 2018 2:34:00 GMT -5
Post by stevep on Jul 19, 2018 2:34:00 GMT -5
I hope this hasnt already been documented ....I'm following up an a repair I did some time ago on an early RE5M which when road tested, felt like it was running out of fuel whenever the throttle was held steady to stay at a fixed speed.
After various attempts I noticed the secondary butterfly fluttering more than expected, and I eventually found the small jet in the rubber leading to the secondary diaphragm was missing on that bike.
I took a jet from another early RE5 I had in the garage and put it into the tube which fixed the problem. It appeared to smooth out movement of the secondary diaphragm by slowing down the rate of pressure change propagating through from the throttle body to to the diaphragm actuating the secondary butterfly.
I checked a number of other carburettors in the garage and found it wasnt installed in most of them - but presumably could have been replaced by a smaller diaphragm inlet fitting on later builds, so I didnt worry any more about it at the time - however now I need to get to the bottom of the problem.
The jet is listed in the original RE5M parts catalog Figure 7 part 40 09492-40005 - Jet, diaphragm #40
However (warning - red herring) - in the later parts catalog for RE5M/A it is listed as Figure 7 part 63 19491-35002 and listed as Jet, secondary main #175 which it clearly isnt (that jet is shown correctly as Figure 7 part 16 09491-36004 Jet, secondary main #175).
I couldnt find any Suzuki part info for 09492-40005 and it doesnt appear to have been used in any other Suzuki motorcycles (RE5M only according to my old Zedder Suzuki Cross Reference database anyway).
Is this something that other owners have come across ?