Gravity Worx Racing's Dual Throttle Kit for the serious Snowmobiler

End the discomfort of using only the right hand thumb for the throttle. The Gravity Worx Dual Throttle Kit installs on the left side so that riders can switch throttle hands and avoid fatigue and strain on the right hand. For the extreme rider who has to have the best. Universal design can be fitted to any Sled.

Clean, Safe, Reliable Design. Lever Clamps around stock 7/8"bar with included spacers, or around 1" chubby bars. Hand warmer friendly.

- Choice of black or chrome Lever
- 2 feet of braided stainless cable housing
- Sealed end caps keep moisture out and makes the cable last much longer
- Stainless steel cable
- Inline throttle cable tensioner for safety
- No cutting or drilling of stock parts
- Drilled and pinned with safety lock-out pin

Can be fitted to any Sled EXCEPT Ski-Doo MXZ Or Renegade

Available in Canada from EcoMotorsport. Call 905 704-0760 or email ecomotorsport@ cogeco.ca Priced at $119.95 plus taxes
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NSTALLATION NOTES
For Standard Type Throttle Blocks With A Single Pin Or Bolt That Holds The thumb flipper onto the throttle block Polaris, Yamaha, some Cats, some Ski-Doo’s, and PSI throttle blocks use this design





1. Remove clip and pin, (or bolt and nut) that holds thumb throttle flipper onto throttle block and replace them with 2 1/2" mounting bolt from kit.




2. On bottom of mounting bolt, add 1 washer, Left Hander throttle lever adapter, 1 washer, 1 standard nut, and 1 ny-lock nut. (in that order) hand tighten standard nut and use ny-lock nut as jamb nut. Squeeze thumb throttle, if throttle lever adapter cannot be LOOSELY held independent of throttle, then it’s too tight and must be readjusted. Make sure thumb throttle moves freely. (It will be necessary on some throttle blocks to leave out the spacer washer in between thumb flipper and throttle lever adapter).



For Twin Pin Type Throttle Blocks With Upper and Lower Screws or Bolts That Holds The thumb flipper onto the throttle block some Ski-Doo’s (Rev and others), some Arctic Cats, and Easy Pull aftermarket throttles use this design

2. Remove 3 inch mounting screw and both nuts from the throttle kit.

On stock right hand throttle block use1/4 inch longer lower mounting screw to mount 1 washer, Left Hander throttle lever adapter, 1 washer (in that order) The lower screw should bottom out on bar and hold the thumb throttle adapter in place to where it operates the thumb flipper but stays independent of the flipper when not in use. Squeeze thumb throttle, if throttle lever adapter cannot be loosely held independent of throttle, then it’s too tight and must be readjusted. Make sure thumb throttle moves freely. (It will be necessary on some throttle blocks to leave out the spacer washer in between thumb flipper and throttle lever adapter, you will probably have to put the spacer washer on the other side of the throttle lever adapter to space the screw properly.

3. Clamp left Hander lever mount around bar (with included spacers) in between grip and brake perch (or around grip) where it will sit and tighten mount bolt. It will be necessary on some models to trim ½ inch from the inner edge of grip to make room for Left Hander Throttle Lever, This will not affect hand warmers. The split in the mount where the bolt clamps it is normally enough of a gap for the hand warmer wires to go through. On the RMKs the parking brake lever will need 3/16 of an inch filed off of the bottom to clear the lever mount. Done properly, it will look really clean like the one in the picture shown here.



4. The cable housing will be a few inches too long. Remove one end cap and lay housing into place where it will go across handle bars or through handle bar pad / cover etc. Mark the length it will need to be with room for the coil spring cable tensioner as shown in picture 6 with cable housing end cap marked POP inserted into the big end of the cable tensioner boot. Cut housing, replace end cap, and lay into place.





5. Thread cable through lever, cable housing, and accordion spring tensioner. (Insert cable through larger side of accordion spring first as shown in picture 6. Insert cable through Cable retainer on Left Hander throttle lever adapter. Pull cable so that accordion boot just touches throttle lever adapter, and tighten Cable retainer screw. Adjust barrel adjustment on Left Hander Lever to remove any slack from cable. Tighten lock nut on barrel adjuster.



6. Cut cable to length and crimp cable end with supplied crimp. Leave about 1 1/2 inches excess cable as shown in picture.





7. Tightly secure cable housing to handle bars with zip ties so that cable and housing does not move when you squeeze Left Hander lever. If cable housing moves then you will not get full throttle. When lined up properly, it will bring throttle smoothly to full throttle and back.



8. BEFORE STARTING ENGINE, squeeze left hand throttle, make sure that it moves thumb throttle from idle position to full throttle position and back freely.

Squeeze thumb throttle, if throttle lever adapter moves with throttle, then its too tight and must be readjusted. Make sure thumb throttle moves freely.



9. It may be necessary to adjust throttle cable slack at top of carborators to keep micro switches in throttle block working properly. Normally, it might take up to ½ turn more slack on each carb. DO ALL CARBS EVENLY.

On most machines, This step has not been needed.





10. FOR THOSE THAT CANNOT GET FULL THROTTLE IN STOCK SETTING

Drill a 3/16 inch hole where it is marked with a black dot in picture, and move the cable mount to that hole. It will be necessary to re-adjust your lefthander throttle cable and probably to trim the housing back about ½ inch. There is an extra end crimp for the cable enclosed to accommodate this.

1997 Ski-Doo twin pins and some Arctic Cats have needed this