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For Viscous Differential

Instead of grease you can use Silicone fluid in the differential for a limited 
slip feel as desired for racing. Simply fill the diff up to the top of the gears 
before replacing the ring gear. (Be sure to reinstall the rubber gasket). 
You may have to replace the o-rings on the outdrives at the same time
 you change to this type of differential if the old ones are worn. Team Losi 
recommends 5000cs. fluid for the front diff, 7000cs. fluid for the center diff, 
and 2000cs. fluid for the read diff. 

TEAM LOSI

SILICONE DIFF FLUID

A5278 - 2000 cs.
A5280 - 5000 cs.

 A5281 - 7000 cs.

Removing The Center Differential - continued

• Remove the radio tray from the chassis, (fig. 12).
• Pop the ball end off of the carburetor slide, fig. (12A)
• Remove four 8-32 x 1/2” flathead screws from the center differential housing, (fig. 13), and remove the 
   center diff from the chassis. 
• Remove four 5-50 x 3/8” button head screws from the center top brace, (fig. 14).
• Slide the front and rear brake rotor assemblies off of the center diff, (fig. 15). NOTE: There are two 
   different size brake discs. The large disc is in the front brake assembly and the small disc is in the rear 
   brake assembly.

Page 7

13

Diff Service

 - Refer to exploded views on page 8.

• Remove the four 3mm flat head screws from the ring gear allowing it to be removed (use the 5/64 allen wrench). 
• Inspect the ring and pinion gears for wear - replace if necessary.
• Remove the cross shafts and bevel gears from the carrier.
• Clean and inspect all parts - replace as needed.
• Check all ball bearings. Clean or replace as necessary.
• Lube all shafts and gears with LOSA3066 assembly grease and reassemble.
• Load cross shafts with gears into the carrier with extra grease. Apply the diff 
   seal gasket to the carrier and reinstall ring gear.
• Lube ring and pinion and with grease (LOSA #3066), and reassemble diff into diff housing.
• Grease the edges of the gear cases. This will ensure a dust free seal.
• Reinstall into chassis

12

13

14

15

12A

Summary of Contents for 8ight RTR

Page 1: ...40 setscrews on the sway bar ball ends and remove the ball ends from the sway bar Remove four 5 40 flathead screws from the rear clip fig 8 Slide the pivot support and rear diff cover off of the bulkhead and remove the diff fig 9 9 8 RemovingThe Center Differential To remove the center differential the radio tray on your 8IGHT RTR has to be removed 10 Front 11 Turn on the transmitter and receiver ...

Page 2: ... 5 50 x 3 8 button head screws from the center top brace fig 14 Slide the front and rear brake rotor assemblies off of the center diff fig 15 NOTE There are two different size brake discs The large disc is in the front brake assembly and the small disc is in the rear brake assembly Page 7 13 Diff Service Refer to exploded views on page 8 Remove the four 3mm flat head screws from the ring gear allo...

Page 3: ...2 3 4 Center Differential Front Rear Differentials 1 2 3 4 Fill with 5000cs oil front or 2000cs oil rear just above the planetary gear Fill with 7000cs oil just above the planetary gear Tighten the diff screws in this order Tighten the diff screws in this order ...

Page 4: ...d shock in the upright position off to the side for a few minutes until the air bubbles escape from the oil Once all the air bubbles are out of the oil gently place the shock bladder onto the shock as shown Some oil should bleed from the shock Screw the shock cap onto the body until some resistance is felt Slowly push the shock shaft up This will bleed excess oil from the shock Tighten the cap all...

Page 5: ... Guide Initial Factory Settings Steering Tie Rods 3 62 92 00mm Page 10 Camber Links x5 Engine Hi Speed Needle 4 turns out Low Speed Needle 2 5 turns out x 4 x2 5 Team Losi 35wt Shock Oil LOSA5225 Shocks 94 50mm 3 72 Front Camber Link 103 4mm 4 07 Rear Camber Link ...

Page 6: ...s in drive train Rebuild Engine overheats Hi Speed fuel mixture is too lean Low Speed fuel mixture too lean Spoiled or improper fuel Cooling air is being blocked Excessive load on the engine See Understanding Rich and Lean Clean head fins Check for binds Engine hesitates or stumbles Engine overheated Hi Speed mixture too lean Low Speed mixture to rich Air bubbles in fuel line Glow plug fouled See ...

Page 7: ...Operations Guide TeamLosi AdivisionofHorizonHobbyInc Not Responsible For Errors All prices subject to change without notice 800 0317 ...

Page 8: ...izon Hobby shall not be liable for any loss or damages whether direct indirect special incidental or consequential arising from the use misuse or abuse of this product or any product required to operate it This is still a model don t expect it to do unrealistic stunts Warnings Fuel is dangerous if handled carelessly Follow all directions and precautions on the fuel container Keep fuel and all chem...

Page 9: ...eration A lean mixture also makes the engine run hotter than desired and does not provide enough lubrication for the internal engine components causing premature wear and damage It is always advisable to run the engine slightly rich and never lean to avoid overheating and possible damage Engine Break In and Adjustments Breaking in your new engine is critical for proper performance Failure to follo...

Page 10: ...ld the fuel line near the carburetor cutting off the flow of fuel and listen closely to the engine RPM speed If the low speed needle is set correctly the engine speed will increase only slightly and then die If the engine increases several hundred RPM before stopping the low speed needle is to rich Lean the mixture by turning the needle clockwise one hour and trying again If the engine speed does ...

Page 11: ...eing wet with fuel or the element burned out Use a spare glow plug to check the igniter If the igniter makes the element glow remove the plug from the engine to check it in the same manner A wet glow plug means there is excess fuel in the engine To eliminate this put a rag over the head and turn the engine over a few seconds with your Spin Start Reinstall the glow plug making sure you have the bra...

Page 12: ...f the steering wheel to reposition the throttle servo and close the carburetor and apply more brakes Note that additional braking force is applied when you push the trigger forward Maintenance In addition to the service needs pointed out in this guide you should try to maintain your new buggy for proper performance and to prevent wear If dirt gets in the moving parts it can seriously hinder the pe...

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