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Speedometer issue

Started by CCDave, June 24, 2019, 02:18:16 PM

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CCDave

Okay everyone, I have an issue with my speedo. It is accurate up to about 55 mph. After that it jumps about 5mph or faster and exponentially off above that. when it says 120 my true speed is only about 95 mph. Any ideas? it is steady though I.E. only jumps at 55mph.

Motofun

Time slows down the faster you go...therefore you can go farther.  More miles in the same amout of time equals a faster indication.  I could be wrong about this..... :wacko1:
'69 Honda Trail 90
'75 Honda CB400F
'85 Yamaha RZ350
'85 Yamaha FJ1100
'89 Yamaha FJ1200
'09 Yamaha 125 Zuma
'09 Kawasaki KZ110 (grand kids)
'13 Suzuki GSXR 750 (track)
'14 Yamaha FZ-09
'18 Suzuki GSXR 1000R (track)
'23 Yamaha Tenere 7
SOLD: CBX,RZ500,Ninja 650,CB400F,V45 Sabre,CB700SC,R1

Pat Conlon

Hey Dave, service the speedo drive gear (at the left front wheel) clean it and lube it.
Next service your speedo cable. Remove the inner cable clean it and lube it up.

If the problem goes away...cool....if not, take the speedo cluster off your bike, box it up and send it to San Diego.
http://www.fjowners.com/index.php?topic=5718.0
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3