1970 650 mercury 65hp 4cyl. rebuild

[Moody Blue]

Re: 1970 650 mercury 65hp 4cyl. distributor

Re: 1970 650 mercury 65hp 4cyl. distributor

also i have a switch box that looks like the epoxy plastic has cracked or expanded out from the inside. is it still ok ?road

This is a test for those switchboxes.

Mercury battery powered CDI test for distributor models.
1. Turn off ignion
2. Disconnect all 3 wires on the distributor side of the switchbox.
3. Remove the HV lead from the coil to the center cap (remember it unscrews
from cap)
4. Reconnect that HV center lead to the COIL side only.
5. Position that HV lead about about 3/8" from ground (block, shrouds etc)
and find a way to hold it there.
6. Jumper the brown and white terminals on the dist. side of the switchbox together.

RECONNECT BATTERY
7. Check that you have +12 V at red terminal.
8. Turn on ignition and verify +12V at white terminal (on red terminal side)
9. Touch the black terminal to ground - unit should cause spark each time you touch ground.

If you get spark with the distributor bypassed, and it won't fire with the distributor connected, the trigger is bad and the entire distributor housing assimbly must be replaced.

If you get no spark using the test, the switchbox is probably bad. In that case, be sure to check for correct power on the switchbox, check all connections, and check the coil's resistance to make sure it is OK.

 

[road.ripper]

Re: 1970 650 mercury 65hp 4cyl. rebuild

thanks Moody, hows the weather up there ? it was nice and sunny all day here.

its my distributor , i need to find some more details tear down and switching one over to a 4cyl , i dont see how to remove the top bearing cap , it says to bend the tabs of the adapter cap open but i am not sure what "tabs"
i wish i had a good merc book for this

road

 

[Moody Blue]

Re: 1970 650 mercury 65hp 4cyl. rebuild

You have a reply from Laddies in another post. He is one of the most knowledgeable members here when it comes to the old Mercs.

You should try not to ask the same question in multiple posts. It drives members crazy trying to keep track of whats going on and make it difficult for you to keep track of responses.

As for the weather, couldn't be better. Weather is typical of late April, not mid March . Won't be long now before the ice starts to break up on the lake. Keep waiting for the other shoe to drop as they say. Don't think winter is done with us just yet

 

[road.ripper]

Re: 1970 650 mercury 65hp 4cyl. rebuild

sorry for the post error , i will stick to this post from now on

thanks

 

[road.ripper]

Re: 1970 650 mercury 65hp 4cyl. rebuild

well got my new used distributor apart and all the parts look to be in good condition after cleaning.
got the old distributor out . what a tight fit ..
i will need a new timing belt, found a small tear in this one.
too tired to post pics tonight

i'll post some tomorrow
night all

road.

 

[road.ripper]

Re: 1970 650 mercury 65hp 4cyl. rebuild

oh i forgot to ask

what type of grease is recomended on rebuild of a distributor ?

got to go to parts store in the morning.

road.