XS1100 AUSTRALIA

General Talk => General Bike Talk => Topic started by: wiz on November 12, 2011, 08:52:33 AM

Title: pilot mixture screw
Post by: wiz on November 12, 2011, 08:52:33 AM

Can anybody help me out with a pilot screw, I have one with the tip broken.
I did post earlier about how many turns out on the PMS was default, as my book said 'pre-set' a member replied 2 1/2, I just saw at the front of the book, "pre-set, in brackets 1 1/4 turns out"
now I'm screwed, forgive the pun.
Also the carbs are fitted with 132.5 mains, my book says 137.5, which is correct ?
Then again the book says the carbs are Mikuni BS34 & the throat on my carbs measures 35mm, any ideas.
Thanks, Wiz.

Title: Re: pilot mixture screw
Post by: steptoe on November 12, 2011, 10:30:46 AM

ay wizz,
 as far a broken tip, nothing to do but replace it,  is the broken piece of the tip siezed in the carb body or is it out, that,s going to be the sticky bit, a fine piece of high tensile wire ground to point with a 90 bend might push it out after a good dowsing of penetrene or such

with the turns out, I start with 2 1/2 out @ 1000 rpm and work from there, easiest way is get it to operating temp then wind them in till the motor starts to slow, then out till it starts to run faster, turn the idle down to 1k again and repeat with the other 3, might have to do a couple of times but you get the idea

whatever you've got for jets, run with them if you don't have the money for another set, you can compensate them with other adjustments in the carbs, ie needle slide heights

Title: Re: pilot mixture screw
Post by: wiz on November 12, 2011, 01:04:22 PM

Yeh it has to be replaced, just wondered if anyone had one before I go to the Yammery.

Title: Re: pilot mixture screw
Post by: wiz on November 12, 2011, 04:37:24 PM

Steptoe, you were right about getting the tip out, I ground a hard nail to a needle point & put a bend on it, broke the brass tip off flush & tapped it out. Still looking for a replacement screw. ;O(

Title: Re: pilot mixture screw
Post by: melbxs on November 13, 2011, 10:09:55 AM

I might have one wiz. Will look today for you

Title: Re: pilot mixture screw
Post by: wiz on November 13, 2011, 11:25:42 AM

A star you are Brian.

Title: Re: pilot mixture screw
Post by: makzy on November 13, 2011, 07:23:00 PM

Hey Wiz if ya can't get one somewhere close to you i have a half dozen spares, ??????

Title: Re: pilot mixture screw
Post by: melbxs on November 13, 2011, 10:38:08 PM

PM me your address and I'll post a pilot screw  up to you.

The main jet sizes changed quite a bit between models and some US models had jets as small as 110's.


http://clubs.hemmings.com/clubsites/xs11/carbspec.htm

Title: Re: pilot mixture screw
Post by: wiz on November 15, 2011, 11:46:43 AM

Brian, I got the PM screw this AM, unfortunately it's the wrong one :O( PM your address & I will return it + the postage, anyone else got a matching one ?(https://xs1100.com.au/forum/proxy.php?request=http%3A%2F%2Fi658.photobucket.com%2Falbums%2Fuu307%2Froyluck%2F1981%2520XS%25201100%2FXS1100PILOTSCREW001.jpg&hash=6eccbb4a437ca9a16c8b94905afe6a1b6da024e2)

Title: Re: pilot mixture screw
Post by: melbxs on November 15, 2011, 01:04:11 PM

 :'( :'( :'(

Sorry Wiz.

Don't worry about returning it. I have a couple of other spares. Keep it until someone else needs it.

Title: Re: pilot mixture screw
Post by: wiz on November 15, 2011, 01:08:40 PM

My bad, Brian, I should has posted a picture, I thought they were all the same :o(

Title: Re: pilot mixture screw
Post by: wiz on November 15, 2011, 01:10:31 PM

Makzy, have you got one that matches the one on the left, in the picture. ?

Title: Re: pilot mixture screw
Post by: Fred on November 15, 2011, 04:07:46 PM

Wiz,

PM me your address and I'll put one in the mail on Thursday.

Title: Re: pilot mixture screw
Post by: makzy on November 15, 2011, 09:09:03 PM

i'l have a look in the morning, there exposed ones, think mine are all concealed, will let you know..

Title: Re: pilot mixture screw
Post by: Fred on November 17, 2011, 09:00:34 AM

Wiz,

I put one in the mail yesterday.

Title: Re: pilot mixture screw
Post by: wiz on November 17, 2011, 01:17:26 PM

Thanks Fred, I'll let ya know when it arrives, Wiz.

Title: Re: pilot mixture screw
Post by: wiz on November 18, 2011, 09:48:54 AM

Nice try, Fred, but the one you sent doesn't have a tip either, it's the one on the right, my original is in the middle. Wiz.(https://xs1100.com.au/forum/proxy.php?request=http%3A%2F%2Fi658.photobucket.com%2Falbums%2Fuu307%2Froyluck%2F1981%2520XS%25201100%2FXS1100PMSCREW001.jpg&hash=e2550bae96214255b9a82a91cde869bacc202a43)

Title: Re: pilot mixture screw
Post by: petejw1966 on November 18, 2011, 10:29:14 AM

wiz, u might need to jump on ebay,
look for a fellar by the name of georgefix,
itll probably be cheaper to buy kits than buying
the mixture screws seperately, 
i dont think yamaha has any left as a guy i know
apparently bought the last 4 in aus, that was a cpl of years
ago now and they werent cheap.

Title: Re: pilot mixture screw
Post by: Fred on November 18, 2011, 11:21:48 AM

What the #@!*&

That screw had a tip on it when I sent it mate. As you know I even wrapped it in cotton wool and zip bagged it.
I only have one more left and I'll need to keep it for a spare myself.

Just for interest, check inside the cotton wool. If the tip is there then I'll make a claim with Aust Post for damages. If it isn't then its on your garage floor and I don't know why.

Title: Re: pilot mixture screw
Post by: wiz on November 18, 2011, 12:35:31 PM

Fred, I opened it on the desk in the study, I have just dissected the cotton wool & the tip IS there, anyone ever soldered on back on ?

Title: Re: pilot mixture screw
Post by: wiz on November 18, 2011, 02:17:52 PM

Well, I soldered the tip back on, instead of bottoming the screw & tuning out 2 1/2 turns, I'll measure how far out the next one is & use that as a default, that way there will be no strain on the tip, fingers xed.(https://xs1100.com.au/forum/proxy.php?request=http%3A%2F%2Fi658.photobucket.com%2Falbums%2Fuu307%2Froyluck%2F1981%2520XS%25201100%2FPILOTREPAIR004.jpg&hash=b6ad62bd069882ecb67b9358c04d6127f0da31ba)

Title: Re: pilot mixture screw
Post by: Jonesy on November 18, 2011, 03:18:25 PM

nice bit of micro surgery there wiz.......I bet you treat that one with kid gloves when adjusting to find bottom

Title: Re: pilot mixture screw
Post by: Fred on November 20, 2011, 11:27:08 AM

wiz,

Nice job mate. It might just be the piccy but that tip doesn't look like it on straight and wil therefore score the barrel or eventually snap off too.

Title: Re: pilot mixture screw
Post by: wiz on November 20, 2011, 01:28:25 PM

Just the shadow me thinks, it's so small if it was off centre it wouldn't be on at all.

Title: Re: pilot mixture screw
Post by: excess.11 on November 20, 2011, 01:58:06 PM

This kit has the same AirMixture screw in it your looking for......and is a fair price too.......

http://www.ebay.com.au/itm/300456874266?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

Title: Re: pilot mixture screw
Post by: wiz on November 20, 2011, 04:38:37 PM

Thanks Jeff, I bagged that ;o)