Drive Chain; Throttle Lever - E-TON Viper 50M Owner's Manual

Drive Chain

The drive chain will stretch with use and will
require periodic adjustments. To check the chain
tension, remove the chain guard and measure the
slack.
The amount of slack in the chain should not
exceed 10-20mm or ¼" - ½".
Inspect the drive and axle sprockets for worn,
damaged or broken teeth. Replace as needed.
Inspect the chain links for damaged, worn or
loose rivets. Repair or replace as needed.
Chain Slack Adjustment
Loosen the axle position lock bolt slightly and turn
the chain adjuster nut to take up the excess slack
in the chain. Once the chain has been adjusted
to the proper tension retighten the axle position
locking bolt.
The chain should be kept well lubricated to
prevent excess wear and premature failure. We
recommend that you lubricate the chain every 15
hours of operation, or more frequently if needed,
with a high quality chain lubricant.

Throttle Lever

The throttle lever is located beside the right-
handlebar grip and is operated by using the right-
hand thumb. The lever is spring loaded and will
return to the idle position when you remove your
thumb from the lever. To accelerate the unit, simply
press the lever forward to open the throttle slide in
the carburetor. To slow the unit, reduce the pressure
on the lever or remove your thumb and the throttle
will return to the idle position automatically.
Adjusting the throttle cable
The cable should be adjusted to allow for ⅛" free
travel before the throttle engages the carburetor
throttle slide. To adjust the cable's free travel, loosen
the locking nut of the cable adjuster, and turn the
adjuster wheel until there is ⅛" free travel in the
lever. Tighten the locking nut to secure the adjusting
ring.
The speed of the unit can be adjusted by adjusting
the throttle stop screw to limit throttle travel.
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