I have a feeling this has already been covered but I can't manage to find anything useful with my searches, so here goes:
I'm reinstalling my cam shafts after having changed the valve shims. I've made sure to keep tension on the cam chain the whole time, so it doesn't slip on the crank, and I've made sure to keep the two cam sprockets on the chain so that the three gears are all in the same (=correct) location as before. I'm ready to bolt the cam sprockets to the shafts, but how do I know I'm not 180 degrees off?
I know you're supposed to have the crankshaft at the "T" mark and the cam bearing cap arrows should point at the dots. But this being a 4-stroke and all, if you were to turn the crankshaft 360 degrees, it would be back at the "T" but the cam dots would now be 180 degrees off. So how do you know?
I have the feeling it might not matter, because if this is like the other bike I've worked on, there's a "wasted" spark in the cylinder at the beginning of the intake stroke. But I want to know for sure before I put it all back together!
Thanks guys/girls,
Marshall
I'm reinstalling my cam shafts after having changed the valve shims. I've made sure to keep tension on the cam chain the whole time, so it doesn't slip on the crank, and I've made sure to keep the two cam sprockets on the chain so that the three gears are all in the same (=correct) location as before. I'm ready to bolt the cam sprockets to the shafts, but how do I know I'm not 180 degrees off?
I know you're supposed to have the crankshaft at the "T" mark and the cam bearing cap arrows should point at the dots. But this being a 4-stroke and all, if you were to turn the crankshaft 360 degrees, it would be back at the "T" but the cam dots would now be 180 degrees off. So how do you know?
I have the feeling it might not matter, because if this is like the other bike I've worked on, there's a "wasted" spark in the cylinder at the beginning of the intake stroke. But I want to know for sure before I put it all back together!
Thanks guys/girls,
Marshall
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