112 SPL 1996 Wellcraft Combo - Won't Start

[crabby13]

Took the boat out week and half ago for the first time. Ran like a dog for about an hour then straightened out and ran strong. Noticed that the batteries weren't recharging so I replaced the Rectifier/regulator. Tried to start it to check voltages and can't get it to fire. I have spark and I have gas. I'm a little leery of the gas but it's the same I used a week and a half ago. I did put 5 gallons of High Test in just to make sure I wasn't empty - bulb gets firm. Brand New batteries. Engine rebuilt about 3 years ago. . .probably have less than 20 hours on it.

I had to remove the flywheel to get to the rectifier. . . It wasn't keyed so I figured the alignment wasn't critical. I did however mark the wheel and replaced it roughly to where it was. Is this a timing issue?

Any ideas or thoughts would be welcome.

Thanks

 

[emdsapmgr]

Yes. The 112's that year were crossflow engine. As such, the flywheel and the crankshaft are keyed. You have to put the key in the crank when you align the flywheel. You can check out the factory exploded parts diagrams at epc.brp.com. On the crankshaft diagram for 1996, it shows the key I'm referring to, item 27 on the diagram. Likely the engine will not run without the key, (it will be out of time) but you should get some violent popping/backfiring if the engine has fuel and good spark. Also, make sure you retorque the flywheel to the service manual specs, around 100-105 ft lbs.

 

[racerone]

Flywheel alignment is very critical and you must use a factory key !

 

[crabby13]

Gents - THANK YOU! I have been chasing my tail for a week on this thing. This forum is awesome!! I'm not a mechanical idiot but I'm not an outboard mechanic by any stretch. I now have direction that I'm sure will get me back out on the Chesapeake. Thanks Again