Problem timing E70TLEOR

[Buddy1263]

I recently replaced the timer base on a 70 hp Evinrude and am having problems getting the WOT timing set. I tried the Joe Reeves method and going down the lake at WOT. The timing should be set at 17 degrees BDTC according to the carburetor cover. I can only get it set to 21 degrees before I run out of adjustment on the adjustment screw. This new adjustment is probably 3/4" more than the previous base and it seems that maximum advance is at 3/4 throttle. What do I need to do to get the last few degrees? I was also wondering if it could be stuck in Fast Start mode.

 

[Dave51]

Did you ever solve this problem? It appears your flywheel may have 2 scales. Are you using the right one? Did the flywheel shift off the key?

 

[racerone]

If the key is sheared the timing on the flywheel ( when using a timing light ) does not change.

 

[Dave51]

If the key is sheared the timing on the flywheel ( when using a timing light ) does not change.

I was thinking that since the OP stated that maximum advance is at 3/4 throttle, from the engine's perspective the timing could be like >30 and is cutting out.

 

[Buddy1263]

I rechecked TDC and the pointer aligns with the TDC mark on the flywheel so I assume the flywheel is on right and the key is good. I am going to try and look at it again this weekend. It does have 2 scales on the flywheel, I'm using the one that lines up at TDC, the other one is nowhere close. Thanks for the feedback.

 

[t2stroke]

racerone is correct about the keyway. It doesn't move, but OMC had problems with the center hub magnets coming loose & moving. That is a little harder to figure out? I would start with a good visual inspection. It would be nice to have another flywheel to compare location of magnet eyes to. Line up keyway & comparison.

 

[Dave51]

ENGINE TIMING TOO HIGH:

1. Check the flywheel center hub magnet to make sure it’s tight. Look for signs of cracks and bulges in the Brown ferret magnet material.

2. Short the White/Black temp wire to engine ground and see if the timing drops back to normal.

3. Check the DC voltage on the Black/White wire going to the timer base. With the White/Black temp wire disconnected, the voltage should be 6 to 10 volts. When the White/Black temp wire is shorted to engine ground, the voltage should drop out. If the voltage on the Black/White wire stays in the 6-10 volt range, disconnect the Yellow/Red wire from the power pack. The voltage should drop out on the Black/White wire. If it does, the harness or starter solenoid is likely defective. If the voltage on the Black/White wire stays in the 6-10 volt range with the Yellow/Red wire disconnected and the White/Black wire shorted to engine ground, the power pack is defective.

http://www.cdielectronics.com/wp-content/uploads/2013/02/CDI Troubleshooting Guide - 2012.pdf