Xray XB9 Instruction Manual

Contents

4242REcOMMENDED pRODUcTS• Use HUDY Bearing Grease to regularly lubricate grease-bearing ball-bearings.• Use HUDY Bearing Oil to lubricate the bearings of the steering system.• Use HUDY Bearing Grease to regularly lubricate the clutch bearings.SUSpENSION & DRIVETRAIN MAINTENANcE• Check suspension for free movement during building and operation, and especially afterrunning and if you have crashed the car. If the suspension does not move freely, use theappropriate HUDY Arm Reamer to clean and resize the holes of the suspension arms.• Regularly check the drive shaft pins (both side and center) and if they show any wearmust be immediately replaced by new pins. If the car is run with worn pins, excessivewear on the diff outdrives will result. The 106000 HUDY Drive Pin Replacement Tool (for3mm Pins) is a compact, rugged multi-use tool set for replacing 3mm drive pins in driveshafts. Use the HUDY replacement drive shaft pins 3x14 (#106050).• Regularly inspect and replace the connecting pins which connect the center drive shaftswith the pinion gear, and also the pins that connect the wheel drive shafts with wheelaxles. Use HUDY Graphite Grease to lubricate the drive shaft connecting joints and thediff gears.• Pivot balls and ball-joints will naturally wear for some time and will generate play. Ifthere is too much play the pivot balls and ball joints need to be replaced.• If the car is run in wet conditions, apply WD-40® on all drivetrain parts before the run.After the run, clean and dry the parts again.HUDY SpRING STEEl™The HUDY Spring Steel™ used in the car is the strongest and most durable steel material on the RC market. While items made from HUDY Spring Steel™ are still subject to wear, thelifespan is considerably longer than any other material. As parts made from HUDY Spring Steel™ wear, the brown color will after some time “go down” but it will not affect the strength ofthe material. The brown color is only a surface treatment and if the brown color will wear the durability of the part will be still strong.clUTcH BEARINGSTo prolong the lifespan of the clutch bearings, they must be regularly cleaned and lubricated (preferably after each run) using ahigh-quality grease such as HUDY Bearing Grease. However, after some time the clutch bearings must be replaced with new ones.HUDY #106220 HUDY #106222 HUDY #106221HUDY #106230HUDY #106210pROBlEM cAUSE SOlUTIONENGINE DOES NOT START• Fuel tank is empty or carburetor is not primed• Bad glowplug or dead glowdriver battery• Fuel lines, fuel filter, air cleaner, or muffler is clogged• Engine is flooded due to over-priming• Carburetor is not adjusted properly• Throttle servo linkage not adjusted properly• Fill fuel tank with fuel and prime• Replace glowplug or recharge/replace glowdriver battery• Clean or replace clogged part(s)• Remove glowplug, turn car over to discharge fuel from cylinder. Test glowplugand replace if defective• Set idle and main/slow needle adjusting screw to standard starting position• Move throttle servo to neutral position and re-adjust linkage(s)ENGINE STARTS BUTTHEN STALLS• Fuel tank is empty• Fuel lines, fuel filter, air cleaner, or muffler is clogged• Carburetor is not adjusted properly• Engine has overheated• Fill fuel tank with fuel• Clean or replace clogged part(s)• Re-adjust idle and main/slow needle adjusting screw• Allow engine to thoroughly cool down and open main needle adjusting screw30° turn richer (CCW)BAD REACTION ANDRESPONSE FROM ENGINE• Carburetor is not adjusted properly• Fuel lines, fuel filter, air cleaner, or muffler is clogged• Low fuel pressure from muffler• Re-adjust main/slow needle adjusting screw• Clean or replace clogged part(s)• Properly install pressure line between muffler and fuel tankCAR IS HARD TOCONTROL• Weak transmitter and/or receiver batteries• Low reception from radio antennas• Servo linkages not adjusted properly• Recharge or replace batteries• Fully extend transmitter and receiver antennas• Move servo to neutral then re-adjust linkage(s)STEERING DOES NOTWORK PROPERLY• Weak transmitter and/or receiver batteries• Bent linkages or driveshafts• Loose steering components• Drivetrain damage• Recharge or replace batteries• Check tightness of steering components and tighten if necessary• Replace damaged partsHANDLING PROBLEMS• Shocks are not working properly• Suspension is binding• Improper tires• Rebuild the shocks and replace worn or broken parts• Make sure suspension moves freely. Replace worn or broken parts• Use different tiresSTEERING FEELSSLUGGISH OR VAGUE• Suspension is binding• Damaged steering servo• Make sure suspension moves freely, and replace worn or broken parts• Check the steering servo for damage and wear, and replace/repair if necessaryTHE CAR DOES NOTDRIVE STRAIGHT• Suspension is binding• Steering trim is off-center• Wheels are loose• Damaged steering servo• Make sure suspension moves freely, and replace worn or broken parts• Adjust steering trim until car drives straight• Check the make sure the wheel nuts are properly tightened• Check the steering servo for damage and wear, and replace/repair if necessaryTROUBLESHOOTING GUIDE

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