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8000 tach
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cowkicker View Drop Down
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Joined: 21 Mar 2010
Location: Ky
Points: 531 		Post Options Post Options   Thanks (0) Thanks(0)   Quote cowkicker Quote  Post ReplyReply Direct Link To This Post Topic: 8000 tach
    Posted: 01 Jan 2022 at 5:05pm
I was wondering if there is an easy to check an 8000 series tach and magnetic pickup
. Thanks
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Northern Hoser View Drop Down
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Joined: 19 Feb 2020
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Points: 124 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Northern Hoser Quote  Post ReplyReply Direct Link To This Post Posted: 02 Jan 2022 at 2:00pm
The pickup is down by the starter, just below I think...it's been a while. Takes a large wrench but is only just snug...


Not too hard to take out and clean.

I cleaned mine but the tach is still jumpy.

I believe most tach issues are the tach, pretty common on these

Matt
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Points: 22116 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 02 Jan 2022 at 2:26pm
If the speed sensor is probed with a multimeter and shows an open circuit, I would assume it is defective. A good speed sensor should read between 100 and 5000 ohms resistance. Installing a speed sensor, screw it in until it just touches the ring gear and back out one full turn. Obviously the two wires from the speed sensor to the tachometer must have continuity. If speed sensor and wiring test good, then the tachometer itself should be at fault.
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