It is of vital importance, before attempting to operate your engine, to read the general 'SAFETY INSTRUCTIONS AND WARNINGS' section on pages 2-5 of this booklet and to strictly adhere to the advice contained therein. Also, please study the entire contents of this instruction manual, so as to familiarize yourself with the controls and other features of the engine. Keep these instructions in a safe place so that you may readily refer to them whenever necessary.
SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O.S. ENGINE Remember that your engine is not a "toy", but a highly efficient internalcombustion machine whose power is capable of harming you, or others, if it is misused. As owner, you, alone, are responsible for the safe operation of your engine, so act with discretion and care at all times. If at some future date, your O.S. engine is acquired by another person, we would respectfully request that these instructions are also passed on to its new owner.
! NOTES • This engine is intended for model cars. Do not attempt to use it for any other purpose. • The wearing of safety glasses is also strongly recommended. • Mount the engine in your model securely, following the manufacturers' recommendations, using appropriate screws and locknuts. • Take care that the glowplug clip or battery leads do not come into contact with rotating parts. Also check that the linkage to the throttle arm is secure. • Install an effective silencer (muffler).
Near TDC ENGINE CONSTRUCTION With this engine, the piston will feel tight at the top of its stroke Piston (TDC) when the engine is cold. Cylinder Liner This is normal. The cylinder bore has a slight taper. The piston and cylinder are designed to achieve clearance a perfect when Crankshaft running they Slight taper reach operating temperature. When the engine is cold. 6 NOTES WHEN APPLYING AN ELECTRIC STARTER Do not over-prime.
ABOUT THE ENGINE BEFORE STARTING These engines are designed especially to power the T-Maxx or Revo. Purposely designed LC3 glow plug is supplied with the engine for improved power, fuel economy and durability. The carburetor offers easy handling as well as high performance. Tools, accessories, etc.The following items are necessary for operating the engine.
TOOLS HEX SCREWDRIVER Necessary for engine installation. 1.5mm, 2mm, 2.5mm, 3mm BASIC ENGINE PARTS Heatsink Head Carburetor Type 11K SCREWDRIVER Necessary for carburetor adjustments. No.1, No.2, etc Exhaust LONG SOCKET WRENCH WITH PLUG GRIP Recommended for easy removal and replacement of the angled and recessed glowplug, the O.S.Long Socket Wrench incorporates a special grip.
FACTS ABOUT GLOWPLUGS Since the compatibility of glowplug and fuel may have a marked effect on performance and reliability, it may be worthwhile to choose the R/C type plug found most suitable after tests. Recommended O.S. plugs are LC3. Carefully install plug finger-tight, before final tightening with the correct size plug wrench. However, plug life can be extended and engine performance maintained by careful use, i.e.: Install a plug suitable for the engine.
Revo T-Maxx Install the electric starter taken from the original engine. Install the manifold supplied with the engine. 14 T-Maxx Revo Adjust the plastic ball end so that the throttle linkage may be connected correctly. Adjust the stopper end so that the throttle linkage may be made correctly.
Revo T-Maxx Finally, connect the wire for glow plug heating to the glow plug. Finally, insert the wire for heating the glow plug. 16 STARTING THE ENGINE & RUNNING-IN ('Breaking-in') For long life and high performance, every engine needs to be 'run-in' or 'broken-in'. With care, running-in of the MAX-21TM can be carried out with the engine installed in the vehicle. Be sure to install the air-cleaner on the carburetor and use a muffler-pressurized fuel system. Fill the tank completely with fuel.
Next, disconnect the glowplug battery and try running the car on the track. If the engine stalls, open the throttle fractionally, but try to keep the engine running as rich as possible: if it stops because of being excessively overrich, close the Needle-Valve 30˚ and try again. Run the car on the track until one tank of fuel has been consumed, then close the Needle-Valve 30˚.
FINAL ADJUSTMENT Final adjustment should be carried out only after the running-in has been completed. Run the vehicle (with throttle fully open) over the longest available straight course, in order to observe the model's speed. Next return the car to the starting point, close the NeedleValve 30˚ and repeat the run, taking note of the improvement in performance.
Finally, beyond the nominal break-in period, a slight readjustment toward a leaner needle setting may be required to maintain maximum performance. Carburetor Body Ball Link 11K Rotate the Metering Needle until its slotted head is flush with the ball link body. This is the standard position. CARBURETOR CLEANLINESS Slide Valve Metering Needle The correct functioning of the carburetor depends on its small fuel orifices remaining clear.
5. Finally, when cleaning the exterior of the engine, use only methanol. Do not use gasoline, kerosene or any solvent that might damage the silicone fuel tubing. Dirt and dust may lodge in Caution: The rear crankshaft bearing of this engine uses a special plastic retainer. If the front housing needs to be heated to remove or replace the bearing, do not allow the bearing to exceed 120˚C (248˚F), otherwise it may be damaged and rendered unserviceable.
TROUBLE SHOOTING Symptom Engine fails to fire. Corrective action Cause Fuel tank is empty. Fuel not reaching the engine. Fill the tank with fuel and repeat Priming procedure. Glowplug element is burnt out. Glowplug battery discharged Replace glowplug. Recharge or replace the battery. Clogged fuel filter Air cleaner and silencer inside is dirty. Clean or replace fuel filter. Replace cleaner element and clean inside silencer. Over priming Remove glowplug and pump out excess fuel.
Symptom Unstable idle Corrective action Cause Unsuitable glowplug Use suggested glowplug in the instructions. Unsuitable fuel Do not use extremely high nitro or low oil content fuel. Extremely light flywheel Add heavier flywheel. Silencer is disconnected or has play Install silencer securely. Symptom Not reaching expected peak r.p.m. Corrective action Cause Insufficient warming up or running-in. Set the needle only after warming up. Complete running-in.
31 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Description Cylinder Head Retaining Screw (10pcs.) Heatsink Head Head Gasket (1pc.) Cylinder & Piston Assembly Piston Pin Piston Pin Retainer (2pcs.) Connecting Rod Carburetor Complete (Type 11K) Carburetor Retainer Crankshaft Ball Bearing (Front) Crankcase Crankshaft Ball Bearing (Rear) Crankshaft Starting Shaft Cover Gasket Rear Adaptor Rear Adaptor Retaining Screw (10pcs.) Glow Plug LC3 Exhaust Seal Ring (2pcs.) Exhaust Manifold M1020 Manifold Spring (2pcs.
33 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Description Cylinder Head Retaining Screw (10pcs.) Heatsink Head Head Gasket (1pc.) Cylinder & Piston Assembly Piston Pin Piston Pin Retainer (2pcs.) Connecting Rod Carburetor Complete (Type 11K-R) Carburetor Retainer Crankshaft Ball Bearing (Front) Crankcase Crankshaft Ball Bearing (Rear) Crankshaft Starting Shaft Cover Gasket Rear Adaptor Rear Adaptor Retaining Screw (10pcs.) Glow Plug LC3 Exhaust Seal Ring (2pcs.
11K CARBURETOR EXPLODED VIEW 2-1 2 2-2 3-1 3 4 1-1 1-2 6 5 6-1 1 7 9 S.M3x3 10 Type of screw 8 C...Cap Screw M...Oval Fillister-Head Screw F...Flat Head Screw N...Round Head Screw S...Set Screw 34 11K CARBURETOR PARTS LIST No. 1 1-1 1-2 2 2-1 2-2 3 3-1 4 5 6 6-1 7 8 9 10 Description Code No. 21982700 Mixture Control Valve Assembly "O" Ring (L) (2pcs.) 27881820 22781800 "O" Ring (S) (2pcs.) 21285901 Needle Valve Assembly "O" Ring (2pcs.) 27881820 No.
11K-R CARBURETOR EXPLODED VIEW 2-1 2 2-2 3 3-1 4 1-1 1-2 6 5 6-1 1 7 9 S.M3x3 10 Type of screw 8 C...Cap Screw M...Oval Fillister-Head Screw F...Flat Head Screw N...Round Head Screw S...Set Screw 36 11K-R CARBURETOR PARTS LIST No. 1 1-1 1-2 2 2-1 2-2 3 3-1 4 5 6 6-1 7 8 9 10 Description Code No. 21982700 Mixture Control Valve Assembly "O" Ring (L) (2pcs.) 27881820 22781800 "O" Ring (S) (2pcs.) 21285901 Needle Valve Assembly "O" Ring (2pcs.) 27881820 No.
O.S. GENUINE PARTS & ACCESSORIES RACING ENGINE PARTS O.S. Glow Plug Exhaust Seal Ring Manifold Spring (2pcs.) (2pcs.) (72106172) (21427200) LC3 (71653000) Dust Cap Set 3 (73300305) For Carburetor Nipple Long Socket Wrench With Plug Grip (71521000) 7 (73300712) For Silencer 12 (73301212) For Carburetor The specifications are subject to alteration for improvement without notice. 38 21TM (T-Maxx) THREE VIEW DRAWING SPECIFICATIONS 31.4 3.41cc (0.208 cu.in.) 17.0mm (0.669 in.) 15.0mm (0.590 in.
TM (Revo) THREE VIEW DRAWING SPECIFICATIONS 31.4 3.41cc (0.208 cu.in.) 17.0mm (0.669 in.) 15.0mm (0.590 in.) 3,000-35,000 r.p.m. 1.8 ps / 29,000 r.p.m. 243g (8.57 oz.) 11 4- 3.3 85.3 ■ Displacement ■ Bore ■ Stroke ■ Practical R.P.M. ■ Power output ■ Weight M7x1 6 JAPAN 16 JAPAN 34.8 26.3 25.4 39 18.8 6 Dimensions (mm) 40 URL : http://www.os-engines.co.jp 6-15 3-Chome Imagawa Higashisumiyoshi-ku Osaka 546-0003, Japan TEL. (06) 6702-0225 FAX. (06) 6704-2722 C Copyright 2007 by O.S.
