
81
Throttle and Choke Cables
Throttle Cables
Move the throttle levers forward and
rearward once. They must operate
smoothly. Refer to an authorized deal-
er if adjustment is necessary.
NOTE:
Do not activate throttle levers
unnecessarily, carburetors are equip-
ped with fuel accelerator pumps.
These pumps deliver fuel to the en-
gines each time throttle levers are
moved forward.
THROTTLE LEVERS — CHALLENGER 1800
SHOWN
1. Must move freely
Choke Cables
Ensure choke cables operate smooth-
ly and without any hesitation from fully
open to fully closed. When the choke
lever is fully pulled, choke must be ful-
ly applied. Refer to an authorized deal-
er if necessary.
Carburetors
Carburetor adjustment is very impor-
tant to allow good engine operation
and therefore jet boat performance.
Carburetor adjustment requires tech-
nical knowledge and experience to
have the correct mixture supplied to
the engine. These critical adjustments
must be performed by an authorized
dealer once a year or more often if
necessary.
Fuel and Oil Filters
These filters must be replaced by an
authorized dealer annually. Fuel sys-
tem pressurization should be conduct-
ed at the same time.
Steering/Jet Pump Nozzle
Adjustment
When the steering is aimed in straight
ahead position, the jet pump nozzles
should be in the same direction to al-
low the jet boat to run in a straight line.
Refer to an authorized dealer if an ad-
justment is necessary.
◆
WARNING
Do not alter or tamper with throt-
tle cables or routing.
F04P0UZ
1
-
CAUTION
Serious engine damage can oc-
cur with improper carburetor ad-
justment.
-
CAUTION
An obstructed oil filter will cause
oil starvation resulting in serious
engine damage.
◆
WARNING
Ensure the steering/jet pump
nozzles operate freely from side
to side and are not stressing the
steering cables. Steering system
should be inspected every 50
hours by an authorized dealer.
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