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Ty 250 Twinshock Timing


neil0965
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You will need a dial indicator to find TDC and measure the number of mm BTDC. You will then need a strobe to check and adjust the timing.

Find TDC then rotate the engine the required number of mm BTDC (probably 2.5 to 3.0mm on these engines) Then put a small mark on the engine case and a mark on the flywheel that exactly aligns with it. Set the points gap exactly then start the engine. Using the strobe check the alignment of these marks and adjust the backplate as necessary. If the backplate can't be rotated then you have to adjust the timing by varying the point gap, increase to advance, decrease to retard. The points ignition on these is generally very reliable.

Cheers

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