The following Idle and Main adjustment screw settings are recommended.
From fully closed position.

Apply minimum torque when closing adjustment screws to avoid damage to screw tip and seat ( 3lbs.ins / 34Ncm)

HW-10A
L=1 Turn 30 Minutes
H=30 Minutes

Opening Pressure = 0.65 bar
Closing Pressure = 0.55 bar

HW-11A
L=1 Turn 15 Minutes 
H=42 Minutes 

Opening Pressure = 0.65 bar
Closing Pressure = 0.55 bar

HW-12A
L=47 Minutes
H=1 Turn 3 Minutes

Opening Pressure = 0.65 bar
Closing Pressure = 0.55 bar

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Tillotson manufactures a wide range of Diaphragm and Float Carburettors, produced to the highest quality standards.

Precision Machining
The machining process, from special-purpose machining to sophisticated computer-controlled machining centres, is capable of achieving the exacting tolerances required, from three thousandths of an inch (0.003") to two ten-thousandths of an inch (0.0002")

Quality Assembly
The assembly process is designed to produce high quality products and, to this end, several test functions are incorporated into the process. This ensures that only products that meet Tillotson’s specifications and that of the customers are supplied.

Tillotson is one of the oldest carburetor manufacturers in the world. Our operations date back to 1914, with the manufacture of float carburetors by Tillotson Manufacturing in Toledo, Ohio. In the late 1940’s, Tillotson invented the diaphragm carburetor, which replaced the float bowl with a rubber diaphragm, thus allowing engines to operate in virtually any position. This innovation led the way to explosion in hand-held lawn and garden equipment, including chain saws, brush cutters, and blowers.

In the 1950’s, some daring drivers had the bright idea to mount a chainsaw engine on a chassis and four wheels, creating the first go-kart. Tillotson’s innovative technologies and OE quality made our carburetor the carburetor of choice for long life, reliability and performance.

In the 1960’s, Borg Warner Corporation purchased Tillotson Manufacturing and merged it with Marvel-Schebler to become the Marvel-Schebler/Tillotson Division. This new division manufactured carburetors in Decatur; Illinois, Blythesville, Arkansas and, beginning in 1972, Tralee, Ireland. By 1983, Borg-Warner had consolidated most of its carburetor manufacturing in Tralee, Ireland, but it maintained a small executive and engineering office in Decatur, Illinois.

In 1985, management bought the carburetor operations of Marvel-Schebler/Tillotson and returned it to its roots as Tillotson Ltd., with headquarters in Tralee, Ireland and a US affiliate in Decatur, Illinois.

In 2007, Tillotson introduced its new line of karting carburetors, specifically engineered for the KF class engines. The HW-10 (KF3), HW-11 (KF2), and HW-12 (KF3) are designed to maximize the performance of your KF engine. One lap around the track should convince you that no other carburetor comes close to our legendary performance.

Bombardier-Rotax GMBH Welser Strasse 32 Postfach 5 A-4623 Gunskichen AUSTRIA
Phone: +43 (0) 7246 6101 Fax: +43 (0) 7246 6370
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Kemco SPLR Kemco SPRL Route de Sassor 16 4910 Fays-Polleur Belgium
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KILT Rue Berger-Haye, 7B-4670 Blegny, Belgium
Phone: +32-4/3876656 Fax: +32-4/3876656

Club 100 Racing Ltd. RYT House Stadium Rye Road Hoddesdon Herts ENGLAND

Dartford Karting Unit 1+ 2 Park Industrial Centre 275-289 Watling Street Dartford Kent DA2 6EP ENGLAND
Phone: +44 (0) 1322 292212 Fax: +44 (0) 1322 288966 Email: Web: www.dartfordkarting.co.uk

Deavinsons Kart Raceway RYE House Stadium Rye Road Hoddesdon, Harts England
Phone: +44 (0) 1992 461600 Fax: Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

NJR Motor sport ltd. Amwell Lane Stanstead Abbotts Ware Headfordshire SG12 8ED ENGLAND

Rowena Motors 67 High Street Bangor Gwynedd Nr. Wales LL57 1NR ENGLAND

Tabor Karting Specialists 125 Lanehouse Rocks Road Weymouth Dorset DT4 9HY ENGLAND

Talko 54 Sunderland Road Sandy Bedfordshire SG19 1QY ENGLAND
Phone: +44 (0) 1767 682020 Fax: +44 (0) 1767 691622 Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Web: www.tal-ko.com

Zip Kart Pindar Road Herts EN 11 ODE ENGLAND

Action Karting Services Ch. Fourneau 69720 St. Laurent De Muer Lyon FRANCE
Phone: +33 (0) 4784 00505

Alpha Karting 1965 Chemin De Trespeaux 30319 Ales Cedex FRANCE
Phone: +33 (0) 4668 65015 Fax: +33 (0) 4663 05185 Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

CPM Racing Kart Central Pieces Motoculture BP 43, 5 Impasse De Pave 53120 Gorron FRANCE

Go Kart Z 1 Bois De Plante Rue Louise De La Valliere 37700 La Ville Aux Dames FRANCE

Kart Shop 32 Chemin Des Epicieres 91310 Longpont Sur Orge FRANCE

KCM Atelier Mecanique 6 Rue De Cracovie 21000 Dijon FRANCE

Of Course Sarl Route De Bordeaux 33380 Biganos FRANCE

Onyx Distribution 50 Route Nationale BP 13, 59149 Cousorle FRANCE

Sodi Kart S.A. Z.A Lews Hautes De Coueron Rue Des Imprimeurs F-44220 Coueron FRANCE

Schuurman BV Griekenweg 16 5342 PZ Oss HOLLAND
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