Fuel Tube; Throttle Operation; Throttle Cable Adjustment - Eton America Matrix R4-150 Service Manual

2.3 FUEL TUBE

Inspect the fuel lines for deterioration, damage, or leaking,
and replace if necessary.

2.4 THROTTLE OPERATION

Inspect the hand grip for smooth full opening and
automatic full closing in all steering positions.
Inspect for deterioration, damage, or kinking in the throttle
cable, and replace it if necessary.
Disconnect the throttle cable at the upper end. Lubricate
the cable with commercially available lubricant to
prevent premature wear.
The BEAMER R2-50 uses a manual choke. Check that the
choke opens and closes smoothly. If it does not, check the
wire connecting to the switch.

2.5 THROTTLE CABLE ADJUSTMENT

Slide the rubber cap of the adjuster off the throttle
housing, loosen the lock nut, and adjust the free play of
the throttle lever by turning the adjuster on the throttle
housing. Inspect the free play of the throttle lever.
This free play should be 5-10mm.