Let me get this straight…. you 'helper' pulled the belts without knowing the position of the crank/pistons NOR the positions of the cams.
He (the helper) then spun the cams irregardless of the position of the crank/pistons.
Right now it's possible that the helper could have spun the cams and forced valves into 1 or more pistons. It's also possible that no damage occurred at all…. but you don't know that.
Given that you don't want to do any more damage (if any has been already done) I would try this:
remove the valve covers on both sides. Without moving the crankshaft or the cams…. loosen the valve adjuster lock nuts and UNSCREW the adjusters at least 2 full turns. This will back off the valves so they won't be so inclined to contact the pistons when you turn over the crankshaft. Note that some valve adjusters will be very snug and 1 or 2 will be loose. That's normal but count the turns anyway.
Now… turn the crank to the T1 position. Then turn the cams so they are properly aligned to the timing marks and both cam sprockets have the UP in the up position. Now install the new belts and proceed with a valve clearance adjustment.
This way you should be safe and save any potential valve/piston damage.
He (the helper) then spun the cams irregardless of the position of the crank/pistons.
Right now it's possible that the helper could have spun the cams and forced valves into 1 or more pistons. It's also possible that no damage occurred at all…. but you don't know that.
Given that you don't want to do any more damage (if any has been already done) I would try this:
remove the valve covers on both sides. Without moving the crankshaft or the cams…. loosen the valve adjuster lock nuts and UNSCREW the adjusters at least 2 full turns. This will back off the valves so they won't be so inclined to contact the pistons when you turn over the crankshaft. Note that some valve adjusters will be very snug and 1 or 2 will be loose. That's normal but count the turns anyway.
Now… turn the crank to the T1 position. Then turn the cams so they are properly aligned to the timing marks and both cam sprockets have the UP in the up position. Now install the new belts and proceed with a valve clearance adjustment.
This way you should be safe and save any potential valve/piston damage.
