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- Thu Jun 06, 2019 1:09 am
- Forum: Maintenance and Repair
- Topic: Old Mark 7 wont maintain speed
- Replies: 6
- Views: 15078
Have an old Mark 7 that won’t maintain speed. Starting slow, the speed increases on its own until it gets to 3200 RPM then stops increasing on its own. The speed control is smooth. I disassembled the speed control and cleaned and lubricated the assembly. All the parts look to be in good condition wi...