Cleaning pilot jet or small channels in carburetor - Gör rent munstycke i förgasare, tips

 "Top tip for cleaning out jets and airways. Use a squirt or so of lemon juice in a vessel with boiling water, citric acid will eat and clean the crud without damaging the metals.

I’ve used this for years with great results." - Andrew Fairhurst, SYM FIDDLE Owners Club

----------------- Kalkosan eller Hessa kalkbort  --------------

//Även Hessa kalkbort bör kunna användas //

Syror angriper oxider väldigt effektivt. Tar även bort ytlig rost. Ett  tips är att doppa förgasaren i Kalkosan (avkalkningsmedel med fosforsyra och citronsyra, koncentration 1-5%) som man hittar i en vanlig affär. OBS! Det är inte helt riskfritt eftersom syror angriper metaller så som aluminium och zink – två vanliga material i förgasare. Lämna inte förgasaren i kalkosan mer än cirka 15 minuter. Gör om processen om det fortfarande är skit kvar. Vad jag har förstått ska man använda lösningen outspädd. Skölj noga efteråt med vatten och upprepa vid behov, du måste få bort syran. När allt syra är borta blås bort vatten med tryckluft så det blir torrt.

Hessa Kalkbort innehåller mindre än 15% koncentrerat fosforsyra.

Citronsyra (175 gr. C) har något högre kokningstemp än fosforsyra (158 gr C).

Så om du spär ut och kokar förgasaren i vatten med en smula syra kokar fosforsyran bort lite tidigare.

Kokning hjälper till att speeda på processen.

Going from 6pin CDI to 5pin CDI,

It sometimes can be hard to find 6pin CDI for Baotian 4-stroke Scooters. 5pin variants are common though so I made a conversion cable. 

Making a adapter cable from 6pin Baotian to 5 pin GY6 C.D.I.

Here's a video showing how to convert.

https://www.youtube.com/watch?v=n5ZhNnL2H5U

Baotian comfort 6 pin CDI (4-stroke)
Blue/yellow (stator pulser)	Black/yellow (ignition coil)	Black/white (kill switch, exclusion ignition)
Green (Earth (jo	Pink (speed limit, not needed) sensor lock	Black/red (AC power from stator)
CDI 5 pin (4-stroke):
Blue/yellow (stator pulser)	Middle (no use)	Black/yellow (ignition coil)
Earth (jord)	Black/white (kill switch)	Black/red (AC power)

------------------ Good to know, according to Aidix (2010) -------------

If you block has an engine block code 139QMA or 139QMB.

"Not every scooter with such a block has the same CDI. That depends on the manufacturer, there are 4 or 5 different types of CDI's for Chinese scooters, which are not interchangeable and look the same. The Spnk/rick18 indicated is therefore the wrong one, and the text that says "fits all scooters with gy6 block" is of course wrong.

Just as wrong as saying that the same cdi fits on all european 2t scooters.

Rex is a sticker brand, the real brand is Qingqi. (Same factory as Peugeot)" - Aidix, https://scooterforum.net/threads/sport-cdi.191414/#post-3238140

About Sym - Sanyang

 Some history of Sym - Sanyang company

SYM has been producing two-wheelers for over 65 years now. They have a pretty good reputation, not like Honda but better rumour than most of the Chinese ones. However Honda / Yamaha parts are more expensive.

As far as I understand the Sym Fiddle 2 is produced in Xiamen Xiashing Motorcycle, China, so not manufactured in Taiwan.

With more than 1,000,000 vehicles produced, the Taiwanese group is now one of the major manufacturers in the two-wheeler industry. With the certification according to the strict criteria ISO 9001 and ISO 9002, SYM is committed to consistently high quality standards.

The development center ensures constant further development and renewal of the model range. As a buyer, you can choose from a variety of models between 50cm³ and 600cm³ cubic capacity, where the price-performance ratio is pretty good.

Sym was founded in 1947 as Ching Feng Hang, an import company of BSA motorcycles. It wasn’t until 1954 that the name Sanyang was first mentioned. Sanyang Electrics.

Sanyang Electrics was soon to be restructured into Sanyang Industrial Co. Ltd. Year 1961.

In 1962 Sym formed a joint venture with Honda begin local assembly of motorcycles. This made them the first motorcycle manufacturer in Taiwan.

The “monkey bike”, the Honda CB125/150 has been made by Sym since the early 1970’s. 

Year 1969, Sym started assembling Honda microcars such as the Honda TN360 and the Honda N600. These cars became very popular in their day. It was this 32 year long cooperation with Honda which helped Sym gain the knowledge and instilled Sym’s thirst for perfection and quality.

They say they have a high quality standard.

2018   1st place best light motorcycles

2014   Sanyang celebrates its 60th anniversary

2012   The Wolf SB250Ni receives the Taiwan Excellence Award

2011   Sanyang Germany is awarded as the best importer

2010  The GTS receives the Taiwan Excellence Award

2009 Sanyang Germany is awarded as the best importer. STCS is used in the first models.

2006 Founding of Sanyang Germany GmbH

2002 Cooperation with Hyundai Motors, Korea. Development of ceramic coated cylinders.

1999 The new R&D center in Hsinchu is opened

1995 Xiamen Xiashing Motorcycle, China is founded

1994 The first SYM scooters come to Germany

1992 Branch VMEP, Vietnam is opened

1988 Opening of the driving safety center

1981 The 1 millionth motorcycle rolls off the assembly line

1980 Relocation of motorcycle production to the new plant in Hsinchu

1978 Laying of the foundation stone for the new production plant in Hsinchu

1977 The first Honda Civic 1200 rolls off the assembly line

1976 Launch of an aluminum cylinder with a 50,000 km guarantee. Export of the cylinder to Honda

1967 Technology agreement with Honda, Japan, the first motorcycles roll off the assembly line

1962 Cooperation with Honda, Japan, the first motorcycles roll off the assembly line

1961 Sanyang Industry Co., Ltd is established, Motorcycle production begins (I believe)

1954 Founded Sanyang Electric Machinery

Source: Most information comes directly from

https://sym-motor.de/ueber-sym/

https://www.sfkawasaki.com/fckimages/pdf/2015%20SYM%20Fiddle%20II%20vespa%20scooter%20brochure%20download.pdf