Jack shaft timing marks

[Matt Cotton]

Hi all.
I'm replacing the timing chain on my Sprint. I've made sure the crankshaft and camshaft timing are aligned as per the workshop manual and the rotor arm is currently pointing at no1. However the jackshaft markings are around 90 degrees out? There are two markings at 12 and 6 o'clock.
If I rotate the shaft so as the markings are at around 3 and 9 o'clock or between the two bolts as stated in the manual, then the rotor arm is at no4 plug?

I'm not sure why this is the case? I favour leaving as it is as the timing was fine before I started the replacement.

Any thoughts folks?

[Mad Mart]

As long as the dizzy clamp bolts are roughly in the middle of the slots (for maximum adjustment either way), it will be fine.

[Matt Cotton]

Thanks Martin.
I've just had a look and the dissy clamp bolt is right over to the left... Someone has been here before I feel!

With this in mind, am I best off to align the jackshaft as per the manual at point 'D' and then centre the dissy shaft accordingly? I will need to check the timing afterwards, but as it is there is no way of advancing if required.

Kind regards Matt.

[Mad Mart]

Put the clamp bolt in the middle of the slot and tweak it down. You will then need to move the jackshaft one tooth at a time to get the rotor arm in the correct position. It will probably only be one tooth out.

[Matt Cotton]

Will do Martin. Thanks for your help with this one.

If I mash the valves I will send it down to Weston for a holiday!

MC

[Mad Mart]

If I mash the valves I will send it down to Weston for a holiday!

Don't do that, I live in Winscombe now.

[yorkshire_spam]

Turn over gently by hand before any attempt to start! Some of us may well have learned that particular lesson the hard way in the past.

[Matt Cotton]

I'm pleased to say the car starts and sounds ok!

Thanks for the help gents.