rockytop93
Seaman
- Joined
- Apr 25, 2003
- Messages
- 64
I have a 75 merc 650 that I just bought. I had to change the timing belt and would like to know the correct way to set the timing. The decal calls for 23 degrees btdc. My timing light shows about 10 degrees at idle. Is the 23 degrees supposed to be at ilde or full advance. I have not got my manual yet thanks much, Allen