CamShaft timing marks

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firestarter_phil
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Joined: Mon Jul 21, 2025 6:53 pm
What Bike or Bikes Do You Own?: 1988 XT600Z 3AJ - White / Red
Honda Fireblade 2009
Honda Fireblade 2017
ZX10R 2016

CamShaft timing marks

Post by firestarter_phil »

Hi there,

I am second guessing myself here and would like some advice from someone who has done this before.

On my engine rebuild I am at camshaft timing stage and can't tell if I am right or 90 degrees out.

Engine is at TDC and I have the timing marks on the crank aligned as per below:-

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I then have the dot on the camshaft in a vertical position also in line with the marks on the crank (if you run a straight edge down)

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Is this correct?

All lobes are in a downward position so valves would all remain shut in this position.

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I just couldn't find the specifics for this in the manual so would love your guidance.
dzl
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What Bike or Bikes Do You Own?: 2001 TT600R, ex army XT600, 34L Tenere, 2001 FZ1, FJR1300
Location: South Australia

Re: CamShaft timing marks

Post by dzl »

That isnt correct. There should be a dot on the cam sprocket also. The dot on cam and sprocket need to be aligned. Your cam sprocket is 180 degrees out? once you have done that there are horizontal lines on the camshaft sprocket that should then line up horizontally with the head. Crankshaft is in the correct position


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firestarter_phil
No Gold Stars Yet
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Posts: 46
Joined: Mon Jul 21, 2025 6:53 pm
What Bike or Bikes Do You Own?: 1988 XT600Z 3AJ - White / Red
Honda Fireblade 2009
Honda Fireblade 2017
ZX10R 2016

Re: CamShaft timing marks

Post by firestarter_phil »

Thank you @dzl for this. Flipped the sprocket 180.

Which manual is this? I clearly do not have the right manual as mine doesn't go this deep.


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