Carburettor:
The Tillotson HW-46A carburettor has been developed specifically for the 225RS engine. In order to
obtain the optimum performance from the engine it is necessary to carry out some maintenance on
the carburettor at regular intervals.
Tools Required
Pop-Off Pressure Gauge Tillotson P.N. 243-504
DG1HW Kit
233-721P Needle & Seat Repair Kit – only necessary if carburettor is not sealing
Torx 15 Screwdriver
Flat Head Screwdriver
Compessed Air / Carb or Brake Cleaner
Optional: Adapter Connector Tillotson P.N.243-506P
Optional: Tillotson Quickjet Tool P.N. SA504
How to Maintain your Tillotson Carburettor:
Check the pop-off pressure of the carburettor to see if it requires a DG Kit (Half) or RK Kit
(Full including inlet needle and seat) – if it is sealing well, it is necessary to fit a DG kit only
however if it is leaking or not sealing, it is advised to fit a repair kit. For the T4 kart is
necessary to replace the kit after 6months or after 12hours of driving.
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