I just started working on a Jet Spin I picked up. There is an issue with the bonus unit. It looks like someone added a tooth to the gear? I'm not really sure whats going on here. There is only 1 post for the switches, then this extra tooth thing. The bracket for the reset coil is broken so until my parts get here I can't test much just yet. It needs to be pulled apart and cleaned still. There is also 2 wires that are next to the bonus unit just tied together. Here is a pic of my unit.

bonus unit (resized).jpg

The tooth it is covering is the one so it can't go any further. Problem is the clock spring hits the screws and doesn't go any further anyway. Looks like it may have been epoxied in as well. The screws do not move.. time for the dremel I guess

I used a dremel on the screws to get the piece off. besides these little screws, it was also put on with CA glue.. Wow does that give off evil fumes when grinding it.. My eyes were burning for hours after..

Thanks. Pictures would be great. I can hopefully get it back together tonight enough to test it and count the steps. One coil bracket was broken and the other is missing 2 of the allen head screws, which probably disappeared with the eyelet. The tooth that was added was over the "missing" tooth so it can't advance further. Teeth don't look especially worn to me. I just don't know how many steps its supposed to have. As far as spare parts go, I don't have any at this time. I have someone that is supposed to be selling me a bunch of spare parts, but hasn't come through just yet.

Thanks for the pics. That should clear up what I need. I'll check the wiper disc orientation as well. From what I can see, my gear is in the same position as yours and the step with a missing tooth is in the same spot. Hopefully this mod was just an "engineer" trying to modify the game..

To be clear on the wire grounded to the frame of the reset coil - Mine is 2 wires currently tied together. I'll look at mine closer tonight, but it looks like in your 2nd pic, there is the same or very similar color connected to a light socket on the lower left and another socket on the close to top left. I see in pic 3 where its grounded to, but not sure if its the same color combo?

I'll count it tonight, but my guess is it will be 15 steps. It does look like the intention was to get it past the 15k mark. The brass screws they used were not set in all the way and were catching on the clock spring, so it never could advance further. The screws were drilled into the gear, but doesn't appear threaded. They used CA glue to hold the whole piece on including gluing the screws into the hole. I used my dremel to cut them out, but was overpowered by the fumes to clean it up properly. I'm going to attack it again with the dremel and either have compressed air blowing on it or my shop vac to remove the fumes as I clean it up the rest of the way.

I went through the bonus stepper tonight and have it working up and down. I really had to cut down the up spring - the long one - to get it to count up well. The pivots are all moving free and the coil looks aligned. Its 15 steps, then stops with a missing tooth, where the add on was. Wiper board appears to be aligned. Must have been trying to get more bonus..