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Hey Everyone.......Had the F5 at the Drags in Naples Maine this weekend. My top speed in the Trap was 74 on all 3 runs, so I took it down the lake a few times and could only get 80 in a mile. 3 weeks earlier the same sled had been pulling a top speed of 91 indicated. My speedo and the radar gun were within a mph of each other. I keep hearing of the apv cables popping off, can someone tell me what to look for? Thanks....
 

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Pull your servo cover off-make sure cables didnt come off spool-whats happening is oil and moisture working its way up cables,during the night cables freeze up,you start it,servo cycles once,cables slack up and come off-engine warms up and usually everthing is fine if cables stay on-pull off spool and put a washer behind to keep cables on-but there is a problem here and apparently cat doesnt want or has yet to figure out yet because your the 1 million person who has had this problem-leave your servo cover off-no need for the damn thing-this way you can keep an eye on the cables in morning-if it cycles three times on start up bring to dealer-bad servo motor-should cycle once only for self clean mode on each startup-scott
 

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Check your primary clutch if the APVs are working. Ended up that
my primary was binding once taken apart and shaft sanded (by dealer)
the bushing moved freely.
 

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do the f-7's apv cycle at start-up the same as the f5's??
 

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the power valves move up and down in the exhaust port depending on engine rpm . there is a servo motor the activates the valves by pulling on cables . the f-5 has a clean cycle at start up and the valves open and close once .
 
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