Setting the timing on a 4.3 262 Mercury

[eddiemako1]

Here's my problem. on the vibration dampener there is a line cut across. on the timing cover there's just a notch. there are no degrees on the timing cover do I just set the cut in notch? I tried to upload a picture but it doesn't seem to want to. Timing supposed to be 10 degrees BTDC

 

[solar7647]

It sounds like you are missing the timing tab. There should be a tab that is mounted on the right side of the balancer that comes off the timing chain cover. I had this same issue, I was able to purchase a bold on timing tab made for GM motors from a local AutoZone and it mounted using 2 bolts for the time in cover.

http://www.jegs.com/i/Trans-Dapt/96...Q8qI_97T9ev56HshVK-NX7rtRibXLclteDRoCEgjw_wcB

 

[Scott Danforth]

Here's my problem. on the vibration dampener there is a line cut across. on the timing cover there's just a notch. there are no degrees on the timing cover do I just set the cut in notch? I tried to upload a picture but it doesn't seem to want to. Timing supposed to be 10 degrees BTDC

What is the year and serial number of your motor. Depending if you have the TB4 or TB5 ignition, the timing proceedure is different

 

[eddiemako1]

Model number 4211025PS serial number om3 55255 the boat is a 2002

 

[Scott Danforth]

0m355255 is coming up as a 350 mag MPI. maybe achris can shed some light

however there should be timing marks on the harmonic balancer as well as the thick line

here are the iboats links to TB V timing https://www.google.com/search?q=thu...ng+site:forums.iboats.com&safe=off&channel=fs

specifically this one if you have EFI

http://forums.iboats.com/forum/engi...mercruiser-base-timing-thunderbolt-v-ignition

 

[eddiemako1]

I'm sorry my dyslexia got the better of me. I typed in the wrong serial number. The correct serial number OM 355225

 

[eddiemako1]

No Title

This is what my timing cover looks like

 

[Scott Danforth]

Gen VI front cover. You need to follow the TBV timing procedure

 

[achris]

Gen VI front cover. You need to follow the TBV timing procedure

And use an advance timing light... There is only one notch on the timing cover and one line on the pulley. That's TDC... Use the advance timing light to set it up at 10 BTDC...

 

[eddiemako1]

I ended up getting timing tape for the correct size harmonic balancer. And set the timing thank you for everyone's help