An acceptable level of vibration...... By burrhead (Read 1,996 times)

[ellpee]

Agree idle screw ON THE VERTICAL 244CC ENGINE is easy. Raise seat, open compartment where the battery lives (2 screws), and there it is, awaiting your Philips screwdriver. Guessing not so easy for folks with the horizontal 257cc engine.

richardthescooter3: what? your carb is not mounted to anything? Post market name, want to be sure not to by one of those. Nothing worse than a free-floating carb. ;>)

[cruiser]

The carb isn't really free floating. The intake manifold supports the entire weight of the carb and it is made mainly of rubber. Eventually from vibration, etc., the rubber can develop cracks which will let air in. Some people have problems keeping a tight connection between the carb and the intake manifold. Here is a link to Honda's answer to the problem:

marketplaceadvisor.channeladvisor.com/StoreFrontProfiles/DeluxeSFItemDetail.aspx?sid=1&sfid=92390&c=879539&i=195496146

[richardthescooter3]

Here is pic of carb I have.

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[ellpee]

Wow, that fuel ratio screw is sure in an inconvenient location. Glad mine seems to be correctly set, at least for the present.

[richardthescooter3]

I use this tool to adjust the a/f so its not too bad ;D

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[richardthescooter3]

I worked on scoot last night, I notice the main trouble with these carbs is that there is very little area for the clamp to hold, the back side of the carb where you connect the air box hose on, you would be lucky to have a 1/4 inch to hold the hose on, there should be a way to extend the length of that area so you would have more to clamp to. (a very poor setup)

[ellpee]

Interesting gizmo, Richard. What's it called, and now does it work? Twisting handle turns screw bit, I presume; some kind of flex drive? Got a link by any chance? Just looking at it I can think of half a dozen situations where my knuckles would have benefited greatly from having one of those.

[richardthescooter3]

Here you go ellpee,
Pilot screw adj tool .ebay.com/sch/sis.html?_nkw=motorcycle+tool+Air+Mixture" rel="nofollow" target="_blank">.ebay.com/sch/sis.html?_nkw=motorcycle+tool+Air+Mixture

[burrhead]

OK..........after the wife and I arrived home from a nice weekend in Gulf Breeze, Fl I thought I would head out to the garage and tackle what I thought would be a simple idle adjustment. So after opening the seat I found the little trap door being held down with one screw. Opened that up and did not see anything that looked like an idle adjustment screw. I currently have the battery cover off too..........so is this access door to the idle adjustment screw there or is supposed to be the one I looked in behind/aft of the battery compartment?
PS: I have beenin ship design for 38 years so you might see me using some nautical terms like forward/aft/atwartships......stuff like that!! ;D

[ellpee]

On my Roketa the little one-screw trap door gives access to the spark plug, but for access to the idle screw take off the battery cover and you'll be able to see the top of the carb.

[burrhead]

Thanks ellpee.......will tackle that this evening and report out!

[burrhead]

OK......that did the trick......vibration at idle much improved! Thanks for this fantastic resource of info......you guys rock!!