SP125 Limited

             22 Walker Wood,  Baildon,  Shipley,  West Yorkshire,  BD17 5BE,  England

             Telephone 01274 583231      steve@sp125racing.com      Mobile 07738 626165

 

 

      www.sp125racing.com
 

           RS125 Setting Data & Maintenance Information

 

          RS125R / RS250R Functions of carburetor parts
 
 
 
TECHNICAL
Functions of carburetor parts
  RS125R / RS250R
Basic functions of each parts
 
Jet needle
  Application of jet needle depends on which carburetor you are using, So please use appropriate jet needle for your carburetor.
Jet needles in Fig(1) and (2) has different length and tapered angles.
Using in appropriate jet needles will cause trouble.

Fig.1
Comparing taper angle α1 α2 α3
(1) 12••/34(33)66/2351/1159 1°24' 2°39' 1°15'
(2) R12••N(M)-1157D 1°24' 3°15' 1°15'


 

Comparing length mm A B C D
(1) 12••/34(33)66/2351/1159 66 58.9 46.9 30.3
(2) R12••N(M)-1157D 65 56.9 46.9 32.8

(1) for carburetor with PWJ
(2) for PJ short carburetor (Unleaded fuel)

The difference between 34 (standard) needle and 33 (option) needle for power jet carburetors is that the 33 needle is 0.5mm shorter at the raise of tapers than the 34 needle. That is, the 33 (option) is 0.5 step richer than the 34 (standard) if comparison is made in the same step.
Likewise, in the case of PJ carburetor without power jets, the M (option) is 0.5 step richer than the N (standard)

Fig.2

 
 
 
 
 
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SP125 Limited Disclaimer

Honda, HRC and all other parts supplied by the SP125 Limited are not guaranteed when used in competition events.
As such, it is a condition of our making all parts available that it is solely the decision of each individual, rider, team member or team whether they choose to use any part supplied and in doing so, absolve the manufacturer and SP125 Limited of any or all such claims, including damage to equipment and/or injury to personnel irrespective of how caused.
All parts remain property of SP125 Limited until paid for in full.

All 'special order' parts, that are ordered specially under the instruction of the customer, are non returnable and non refundable.