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Sorry I do not have the timming numbers at home.....have them at the shop....any way there are two numbers an example 142 / 68 what this means is with the Mag piston at top dead centre using a protractor or rotary valve timing disc measuring from the bottom of the mag side intake port mark 142 Deg. counter clockwise . them from the top of the same port ( mag.) measure 68 Deg . clockwise.. so now you have two lines one somewhere about 11:00 and the other about 4:00 with the crank still at mag. TDC. install the valve within these marks. you may have to flip the valve over to get the best match.. if you can't get the numbers...I will post them later if you need .....Jari
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