1988 v4 88hp spl TIMER BASE

woodshole

Seaman Apprentice
Joined
May 8, 2002
Messages
42
Has anyone replaced a timer base on this engine. I got my engine started with great difficulty. (carbs are clean) I disconnected the timing linkage and can only keep the engine running by placing the timer base (on starboard side) in one sweet spot. If I move it forward or aft it buggers out. How much is a timer base part? Is it just as easy as popping off the flywheel and replacing the base. Not much in my shop manual about this. <br />Thanks,<br />Sean
 

Walker

Captain
Joined
Jun 15, 2002
Messages
3,085
Re: 1988 v4 88hp spl TIMER BASE

It probably isn't the timer base causing the trouble. Have you cleaned and overhauled the carbs. Have you set the link and sync. Are you getting fire to all 4 plugs?
 

woodshole

Seaman Apprentice
Joined
May 8, 2002
Messages
42
Re: 1988 v4 88hp spl TIMER BASE

Carbs have been removed and cleaned. no problem with the carbs. When the engine was running i could rev it with the throttle. Its just when i move the timing (on starboard side) things go to hell. like i said there is only one sweet spot where the engine will run. swapped out powerpack and coils and wires seems to have spark. Could you explain "link and sync" do i need to index the fly wheel?
 

ledgefinder

Ensign
Joined
May 2, 2002
Messages
916
Re: 1988 v4 88hp spl TIMER BASE

That's a puzzler...<br /><br />Anyway, the swap's fairly easy. A common automotive harmonic dampener puller will work, using the three threaded holes near the center of your flywheel. After the flywheel's off, removal & re-installation of the timer base is pretty self-evident. Use a little grease (sparingly) on the plastic ring the timer base rides on. <br /><br />The part you want to pay attention to is re-installation of the flywheel. Not difficult, but you want to do it right. The crank taper & mating surface on the flywheel want to be DRY (not lubricated). I've wiped them with a earswap damp with alcohol. Don't get junk on the crank seal sitting just below where you're working. Then torque the flywheel nut to 105 ft-lbs (exactly). Check the timing to see if it's different with the new timerbase.<br /><br />You should be able to get a good used one from any number of online used boat motor places. They don't usually go (at least on those newer motors), so shouldn't be hard/expensive to find.
 

Walker

Captain
Joined
Jun 15, 2002
Messages
3,085
Re: 1988 v4 88hp spl TIMER BASE

Link and sync is checking and making adjustments if necessary to insure that your carbs all open at the same time and rate and that your throttle linkage and timing linkage are syncronized and in proper relation to each other. You need a manual for the exact procedure and setup specs.
 
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