4-strokes

66 topics in this forum

1. want to install HKS700E int Kitfox IV

   By zadwit, 23 Nov 2017   

   • engine mount???
   • 11 replies
   • 8,028 views
   • 
   • Cedric R
   • 28 Aug 2025

2. Subaru EA81

   By bcbushcaddy, 26 May 2016   

   • subaru
   • ea81
   • (and 5 more)

     Tagged with:

     • subaru
     • ea81
     • reductions
     • dave johnson
     • re-drive
     • belt drive
     • rotec tbi
   • 15 replies
   • 15,775 views
   • 
   • bcbushcaddy
   • 3 Apr 2022

3. KFM 112 M ENGINE MANUALS

   By ALESSANDRO, 18 Sep 2021
   • 1 reply
   • 2,279 views
   • 
   • skelly
   • 17 Dec 2021

4. Subaru nsi manual ea-81 wanted

   By Montanacoyote1, 27 Nov 2021
   • 1 reply
   • 1,170 views
   • 
   • wypaul
   • 28 Nov 2021

5. Rotax 912 slow cranking

   By ChrisBolkan, 18 Nov 2021   

   • rotax 912 starter
   • 9 replies
   • 2,851 views
   • 
   • Av8r3400
   • 21 Nov 2021

6. Production date by S/N

   By aschlem, 4 Mar 2021   

   • 912 age
   • 3 replies
   • 2,493 views
   • 
   • aschlem
   • 5 Mar 2021

7. Aeromomentum AM-10

   By Allen Sutphin, 14 Feb 2020
   • 5 replies
   • 2,500 views
   • 
   • 1avidflyer
   • 20 Feb 2021

8. Alaskan Avid RX-1 progress

   By TSIMKO, 18 Jan 2021
   • 10 replies
   • 2,274 views
   • 
   • TSIMKO
   • 16 Feb 2021

9. Rotax 912 ULS Tuned Intake

   By lv2plyguitar, 1 May 2018
   • 10 replies
   • 4,197 views
   • 
   • Snipe
   • 5 Feb 2021

10. MY AVID Mk4 RX-1...build

    • 1
    • 2

    By sky4play, 5 Nov 2018
    • 25 replies
    • 6,520 views
    • 
    • TSIMKO
    • 4 Jan 2021

11. Bad floats again for Rotax

    By wypaul, 13 Dec 2020
    • 5 replies
    • 1,655 views
    • 
    • TJay
    • 14 Dec 2020

12. rotax 912 edge performance big bore kit failure

    By flywise, 4 Sep 2019   

    • edge performance
    • 15 replies
    • 14,437 views
    • 
    • Av8r3400
    • 12 Aug 2020

13. Soob coolant manifold

    By Elkonastick, 25 Jul 2020   

    • alternative
    • 2 replies
    • 1,183 views
    • 
    • Elkonastick
    • 27 Jul 2020

14. HKS install

    • 1
    • 2

    By Allen Sutphin, 25 Jun 2020
    • 34 replies
    • 6,635 views
    • 
    • Allen Sutphin
    • 25 Jul 2020

15. oil temp sensor

    By MagBuzz, 26 Jun 2020
    • 0 replies
    • 799 views
    • 
    • MagBuzz
    • 26 Jun 2020

16. 912 fuel pump

    By Allen Sutphin, 19 Jun 2020
    • 4 replies
    • 1,055 views
    • 
    • Allen Sutphin
    • 20 Jun 2020

17. Jab 2200

    By Allen Sutphin, 18 May 2020
    • 0 replies
    • 1,483 views
    • 
    • Allen Sutphin
    • 18 May 2020

18. 912 alternator in panel warning light

    By 1avidflyer, 16 Apr 2020
    • 2 replies
    • 1,080 views
    • 
    • NorthIdahoAvidflyer
    • 16 Apr 2020

19. What cowl for your Avid Flyer with RX1 engine

    By 1avidflyer, 2 Apr 2020
    • 1 reply
    • 2,111 views
    • 
    • Yamma-Fox
    • 4 Apr 2020

20. Yamaha Apex Skytrax Adapters

    • 1
    • 2
    • 3
    • 4

    By Yamma-Fox, 26 Mar 2018
    • 77 replies
    • 40,636 views
    • 
    • SuberAvid
    • 12 Mar 2020

21. 912UL - Will it windmill?

    By 109jb, 13 Feb 2020
    • 4 replies
    • 3,440 views
    • 
    • flywise
    • 16 Feb 2020

22. 912 hp increase

    By FireFoxIV, 12 Feb 2020
    • 19 replies
    • 3,044 views
    • 
    • Buckchop
    • 14 Feb 2020

23. YAMAHA RX-1 (140 HP) install in Kitfox 5

    • 1
    • 2
    • 3
    • 4
    • 5

    By Yamma-Fox, 15 Sep 2017
    • 108 replies
    • 35,116 views
    • 
    • Yamma-Fox
    • 8 Dec 2019

24. Yamaha RX1 Engines

    • 1
    • 2
    • 3
    • 4
    • 23

    By Teal, 26 Feb 2016
    • 561 replies
    • 157,898 views
    • 
    • 955i
    • 18 Nov 2019

25. Yamaha RX1 conversion Process

    By Supermotive, 18 Sep 2019   

    • yamaha
    • rx1
    • (and 5 more)

      Tagged with:

      • yamaha
      • rx1
      • conversion
      • rotax
      • c
      • gearbox
      • adapter
    • 7 replies
    • 1,987 views
    • 
    • Yamma-Fox
    • 30 Sep 2019