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Main Jet 5mm Dellorto View larger

Main Jet 5mm Dellorto

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The 5mm jets will fit any Dellorto carb from 19 to 21mm in diameter.To set the carb up one usually starts with an overlarge mainjet. This will cause the engine to missfire (fourstroke) on full throttle. You then gradually decrease the mainjet in size (in steps of 5) until the engine starts running properly. Finetuning is then achieved by juggling around with the in-between sizes. Be careful: too small a mainjet will result in weak mixture and piston seizures.

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By buying this product you can collect up to 2 loyalty points. Your cart will total 2 points that can be converted into a voucher of CAD $0.03.


Data sheet

Carburetor TypeDellorto 19-21mm

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Main Jet 5mm Dellorto

Main Jet 5mm Dellorto

The 5mm jets will fit any Dellorto carb from 19 to 21mm in diameter.To set the carb up one usually starts with an overlarge mainjet. This will cause the engine to missfire (fourstroke) on full throttle. You then gradually decrease the mainjet in size (in steps of 5) until the engine starts running properly. Finetuning is then achieved by juggling around with the in-between sizes. Be careful: too small a mainjet will result in weak mixture and piston seizures.

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