Engine Troubleshooting Guide - ProBoat Rockstar 48 Owner's Manual

Engine Troubleshooting Guide

Problem
Engine Does not Start
Engine starts then stalls
Engine is running, but
vehicle does not move
RockStar 48
Possible Cause
Out of fuel
Engine fl ooded
Fuel mixture is old or bad
Spark plug is not working
Throttle servo failed/Setup is wrong
Carburetor is incorrectly adjusted
Engine stop switch is malfunctioning
Piston and cylinder is worn
Wiring is disconnected or damaged
Receiver switch is off
Out of fuel
Engine may be overheated
Engine idle is too low
Carburetor is incorrectly adjusted
Clutch is slipping or locked-up
Fuel mixture is old or bad
Throttle servo is improperly set up
Clutch or fl ex shaft cannot turn
Clutch is slipping or locked-up
Clutch or fl ex shaft is damaged
Solution
Refi ll the tank and follow starting instructions
Remove the spark plug. Hold R.O.S.S. button for 2
seconds. Replace and test
Mix fresh fuel per instructions
Repair or replace the spark plug
Check servo operation. Set it to neutral and reset
the linkage according to your radio and model
manufacturer's specifi cations
Return the carburetor to the factory settings and
retune if necessary
Check and replace the stop switch if necessary
Check the piston and cylinder for wear or damage
and replace if necessary
Connect wiring, repair or replace damaged parts
Power on receiver switch
Refi ll the tank and follow starting instructions
Let the engine cool. Reset the carburetor to factory
settings and restart
Follow the instructions to increase idle speed
Return the carburetor to the factory settings and
retune if necessary
Repair or replace the clutch
Mix fresh fuel per instructions
Set the servo to neutral and reset the linkage
according to radio and model manufacturer's
specifi cations
Repair or replace damaged parts
Replace damaged parts
Replace damaged parts
EN
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