motobecane 50V choke

jack /

May 07, 2002 01:53AM

I am nearing completion of going through the motobecane i recently got. I have learned a lot from just taking it apart, front to back, and cleaning it, lubing and tightening. I cleaned out my muffler, and in the process cracked the bolt holding the tail pipe. not to fear, i threaded the remainder and added acoupler, cut to the very edgeof the inside, added another 3/4 piece of bolt, and voila, success. Now, just reading through the forum has added a lot of insight to my limited knowledge. a lot of you guys must have had a mope for a while. Out here in my part of Southern Calif., I dont see too many mopeds, and the ones I do find I try to acquire. I recently stumbled upon a 1986 Honda Elite 150, running, and talked the guy into parting with it for 200$. I paid more than that for my Foxi. Of course. the Foxi is CLEAN. I may use that Elite as a bargaining chip to get two more peds from a co-worker who has a batavus and a vespa. He has never tried to do anything with them, he just likes to gather stuff.

On to my main subject. I still have a concern with my choke. Ron Brown gave me some insight, but I still have a feeling it is on wrong. I have the cable going into the top, the spring is inside the brass fitting, and underneath the carb I put the plastic piece. i fit the cable through all this, and underneath i secured the retainer. It seems to work, pulling the plastic thing up, but on the diagram I have, the retainer is on top???? I have the moped junkyard diagram, and the plastic piece i am referring to is #27. I wish i had a real photo of the attachments!! the plastic piece i refer to is called the choke push rod. it is on the bottom of the carb. I can see from the wear marks on it that it does go there , and it is in the position it should be, and it does get pulled up. now how does that cable retainer fit in? it has to be on the bottom, or the cable will slip out, and the push rod wont stay in. Help????? Also, does anyone know anything I could use for the front fork boots? Thanks guys, I know I will get the help I need

Re: motobecane 50V choke

Ron Brown /

May 07, 2002 11:15AM

Jack,

I think I answered this once before by saying I did not understand your description. Jack, I still don't understand your description. It seems to me that when I take the top off the carb, the whole choke mechanism comes with it. Is this not true of yours?

Ron

Re: motobecane 50V choke

jack /

May 07, 2002 01:54PM

No. when I took off the carb, I had to cut the choke cable to remove the choke assembly. I had planned on replacing the cable, so it was no biggie. Does the cable go on top of the carb? Do you have a choke push rod? It is a white plastic, about 1 inche. the thin part is about 3/4", the bottom is about 1/4", a tiny bit bigger than the thin, which goes into the carb from the bottom. I need a real good diagram to show the placement. Also, does the starter cable, which goes to the cylinder, work like the choke? it has the black lever which says off on top, start on the bottom, and engine stop in the middle, with arrows up and down. describe how this should work. sorry i sound so clueless, i feel like it.

Re: motobecane 50V choke

Ron Brown /

May 07, 2002 02:25PM

Jack,

You have a comletely different carb than mine. When I take the top off mine, the choke assembly and throttle slide come with it. If no one else posts, I would just try it.

The decomp lever really only has two positions. Off is the normal running position which it should return to when you let go of it. The start position releases engine compression so the centrifugal clutch can get up to speed when starting, but it won't run until you release the lever.

The Engine Stop is simply that if you pull the lever when the engine is running, it will stop. I don't know why they label it this way because the off switch is the recommended way to stop the engine. Openig the decomp valve with the engine running tends to burn it,

Ron

Re: motobecane 50V choke

Simon King /

Sysop

simon

May 07, 2002 04:04PM

I know what you're talking about with that push rod -#27 in the diagram. I have a bunch of different diagrams for Motobecane carbs, and there are 3 (i think) different styles. The push rod is only on one of them, labeled "30MPH version with long inlet pipe, post 1977".

My Motobecane doesn't have that type of carb either, but my friend Eric's does. I'm going to be working on mopeds at his house later this week; I'll take a look and hopefully take some photos of it for you.

simon

Re: motobecane 50V choke

jack /

May 08, 2002 02:57AM

that would be excellent. try to see the order that all pieces go , as weel as how cable works. Thanks!!!

Re: motobecane 50V choke

jack /

May 08, 2002 03:06AM

thanks. see, i learn more every day. Now, do i need to lube the clutch assembly. the small part of the pulley system? i want to make sure anything that could be lubed is. this moped had been sitting out in the elements for over 8 months. it saw rain dirt leaves spiders etc.

Re: motobecane 50V choke

Ron Brown /

May 08, 2002 10:03AM

Jack,

If you mean the operating lever, yes, a couple of drops of oil. The same is true of any cable and operating lever.

Ron

Re: motobecane 50V choke

jack /

May 08, 2002 11:16AM

sorry ron, wrong description. i meant the variator. i see in the manual it has a grease nipple on the inside. does it need to be lubed this way?

Re: motobecane 50V choke

Ron Brown /

May 08, 2002 11:32AM

Jack,

There is a needle roller bearing in the center of the clutch which does need lube. I use chassis grease in mine. If it is like mine, you neeed a "rubber tip" adaptor for a grease gun. Use a manual gun and give it one or two shots max as the grease can contaminate the clutch. I think there is a similar nipple on the left end of the pedal crank. Same type bearing, same amount of grease.

Ron

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