Benelli 900 SEI TIMING GEAR SET UP
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Thread: Benelli 900 SEI TIMING GEAR SET UP

  1. #1
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    Benelli 900 SEI TIMING GEAR SET UP

    Hi, I have a problem. I am looking for information or graphics showing how to set the timing and in what order (and with what force) tighten the screws on the engine head in Benelli 900 sei. Can anyone help me?

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    Cylinder head bolt torque for 900 Sei is the same a for the 70 Sei ... 2.8 - 3.0 kg.m (20.2 - 21.7 ft.lb) working from the centre outwards as shown in the attached image capture from the workshop manual.
    What timing are you asking about - ignition or camshaft?

    If you're going as far as removing the cylinder head, Id suggest you get yourself a workshop manual. They're available on CD from the Benelli-Motobi Club GB.
    Attached Images Attached Images  

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    Quote Originally Posted by Sprocket View Post
    Cylinder head bolt torque for 900 Sei is the same a for the 70 Sei ... 2.8 - 3.0 kg.m (20.2 - 21.7 ft.lb) working from the centre outwards as shown in the attached image capture from the workshop manual.
    What timing are you asking about - ignition or camshaft?

    If you're going as far as removing the cylinder head, Id suggest you get yourself a workshop manual. They're available on CD from the Benelli-Motobi Club GB.
    Hi, and thank You for your help!

    I'm asking about camshaft timing. I have to remove the cylinder head because the spark plug thread was broken and stayed in cylinder head.

    Do also have image for that set up?

    Or maybe You have complete workshop manual in PDF?

    I'll contact Benelli-Motobi Club GB for this manual also.

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  5. #4
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    There isn't a complete workshop manual for the 900 Sei. Benelli did a manual for the 500 Quattro + 750 Sei. But when they produced the 900, all they did was a supplement to the 500/750 manual. So you need both the 500/750 manual and the 900 supplement.
    There's also a parts manual for the 900.
    I have scanned copies of all those docs as pdf files, but together they're about 70Mb. I reckon that's too big to email. I could put them on a USB memory stick and mail them to you if you cover cost of the stick and postage.

    In the meantime, here's the bit about cam timing. Seems a bit complicated and requires a special timing disk. If I were you, I'd put timing marks on the crank and camshaft before disassembly, then simply restore the timing the same as it was.
    Attached Thumbnails Attached Thumbnails Benelli 900 SEI TIMING GEAR SET UP-cam-timing-1.jpg   Benelli 900 SEI TIMING GEAR SET UP-cam-timing-2.jpg  

  6. #5
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    Quote Originally Posted by Sprocket View Post
    There isn't a complete workshop manual for the 900 Sei. Benelli did a manual for the 500 Quattro + 750 Sei. But when they produced the 900, all they did was a supplement to the 500/750 manual. So you need both the 500/750 manual and the 900 supplement.
    There's also a parts manual for the 900.
    I have scanned copies of all those docs as pdf files, but together they're about 70Mb. I reckon that's too big to email. I could put them on a USB memory stick and mail them to you if you cover cost of the stick and postage.

    In the meantime, here's the bit about cam timing. Seems a bit complicated and requires a special timing disk. If I were you, I'd put timing marks on the crank and camshaft before disassembly, then simply restore the timing the same as it was.
    One again, thank You for your time and support!

    I'll go through it today.

    If it's not a problem You can send files via WeTransfer - https://wetransfer.com/ - up to 2GB are for free.

    You drag and put files on site, add e-mail adress and send - my e-mail adres is [email protected]

    Thanks for understanding!

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    On the diagram of the cylinder head, the manual has a mistake. A Benelli specialist reliable informs me that the top right hand side showing a strip of metal used for setting the camshaft is a reversed image! If you set it like it shows the valve timing will be wrong!
    hold a mirror to the diagram to see the correct way to set it. Apparently Benelli realised it was wrong but failed to correct it!
    The Benelliman
    1981 Benelli Sei 900
    1989 Benelli Sei 900
    1976 Benelli 125 Enduro
    1981 Benelli 250 2c
    1976 Benelli 250 Quattro
    1992 Ducati. 907 ie

  8. #7
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    Quote Originally Posted by elsajmon View Post

    You can send files via WeTransfer - https://wetransfer.com/ - up to 2GB are for free.
    OK. I didn't know that site existed. File transfer done.

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    Quote Originally Posted by R Powell View Post
    On the diagram of the cylinder head, the manual has a mistake. A Benelli specialist reliable informs me that the top right hand side showing a strip of metal used for setting the camshaft is a reversed image! If you set it like it shows the valve timing will be wrong!
    hold a mirror to the diagram to see the correct way to set it. Apparently Benelli realised it was wrong but failed to correct it!
    Please, can You show me which exactly picture I should be looking at?

  10. #9
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    Quote Originally Posted by Sprocket View Post
    OK. I didn't know that site existed. File transfer done.
    Once again, THANK YOU! I received files!

  11. #10
    Senior Member R Powell's Avatar
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    Richard Powell
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    Benelli 900 SEI TIMING GEAR SET UP-78107f3e-0909-4143-8968-6a166e32c6f2.jpeg It’s the image in the top right hand corner of this picture!
    The Benelliman
    1981 Benelli Sei 900
    1989 Benelli Sei 900
    1976 Benelli 125 Enduro
    1981 Benelli 250 2c
    1976 Benelli 250 Quattro
    1992 Ducati. 907 ie

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