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 familia...
2 ! ! Remember that your engine is not a "toy", but a highly efficient internal- combustion 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 som...
4 ! Notes before starting the engine, always check the tightness of all the screws and nuts especially those of joint and movable parts such as throttle arm. Missing retightening the loose screws and nuts often causes the parts breakage that is capable of harming you. This engine is intended for mod...
6 piston cylinder liner crankshaft engine construction with this engine, the piston will feel tight at the top of its stroke (tdc) when the engine is cold. This is normal. The cylinder bore has a slight taper. The piston and cylinder are designed to achieve a perfect running clearance when they reac...
8 this manual handles the following five versions. Max- 12tg series instructions note as delivered, the engine has its carburetor lightly fit into its intake. Secure it according to the installation of the carburetor section. Max- 12tg with 12e carburetor max- 12tg-x with 12e carburetor max- 12tg-p ...
10 items necessary for starting tools, accessories, etc. The following items are necessary for operating the engine. Fuel generally, it is suggested that the user selects a fuel that is commercially available for model two-stroke engines and contains 10-30% nitromethane. As a starting point, we reco...
12 max- 12tg, max- 12tg-p standard accessories engine mount spacer 1piece glow plug no.8 1piece exhaust seal ring 1piece max- 12tg-x, max- 12tg-px glow plug no.8 1piece exhaust seal ring 1piece installing the glowplug fit washer to glowplug and insert carefully into cylinder- head, making sure that ...
14 carburetor type 12e mixture control screw throttle stop screw needle valve needle holder fuel inlet throttle lever the needle-valve(adjusted at the factory): three adjustable controls are provided on this carburetor. For adjusting the mixture strength when the throttle is fully open. The throttle...
16 ! ! ! ◆ notes concerning the recoil starter reminder! Do not attempt to disassemble the recoil starter. If you do so, the very strong spring inside will be suddenly ejected. This can be very dangerous. Do not extend the starter cord more than 40cm (16"). Do not abruptly release the operating hand...
18 engine installation make sure that the vehicle's engine mounting surfaces are level and in the same plane. Poor installation may cause distortion of the crankcase, bearings, etc., resulting in erratic running and loss of performance. Chassis chamfer inside edges of bearers. Do not allow bottom of...
20 starting the engine & running-in ('breaking-in) pressurized fuel system ! Before starting the engine, always check the tightness of all the screws and nuts especial- ly those of joint and movable parts such as throttle arm. Missing retightening the loose screws and nuts often causes the parts bre...
22 → → turn the needle-valve clockwise until it stops. This is the fully closed position. Do not force it to turn further. Metering needle is set at basic position. (refer to p30.) needle valve open close (clockwise) approx 0.5mm the carburetor is set as shown below at the factory. Start the engine ...
24 → → now connect glowplug battery lead to heat the plug filament and start the engine. In case of the 12tg-x and 12tg-px starter handle pull the starter handle briskly straight out several times to start the engine. Start the engine using a starter box, making sure the engine rotation direction is...
26 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 over-rich, close the needle-valve 15˚ and try again. Run the car on th...
28 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 needle-valve 15˚ and repeat the run, taking note of the improvement in performance. Continue with further runs, gradua...
30 in case of the 12d carburetor in case of the 12e carburetor carburetor body mixture control screw throttle lever realignment of metering needle and mixture control screw in the course of making carburetor adjustments, it is just possible that the metering needle and the mixture control screw may ...
32 cause corrective action engine fires intermittently but does not run. Insufficient fuel in the tank. Fill the tank with fuel. Deteriorated glowplug replace glowplug. Clogged fuel filter air cleaner and silencer inside is dirty. Clean or replace fuel filter. Replace cleaner element and clean insid...
34 cause corrective action cause corrective action poor response deteriorated glowplug replace glowplug. Incorrect carburetor settings readjust low r.P.M. Range with metering needle or mixture control screw. Incorrect setting of transmitter exponential function. Check the transmitter setting. Poor r...
36 then, inject some after-run oil into the engine, and rotate the engine with an electric starter or the recoil starter for 4 to 5 seconds to distribute the oil to all the working parts. Finally, when cleaning the exterior of the engine, use methanol. Do not use gasoline or any petroleum based solv...
38 c .M3x16 1 2 3 5 4 6 7 8 9 10 11 12 14 13 15 c .M2.6x7 16 max- 12tg engine exploded view type of screw c...Cap screw m...Oval fillister-head screw f...Flat head screw n...Round head screw s...Set screw 39 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 21414000 21413000 21536000 21817000 21415000 21428000...
40 2 4 3 5 6 7 10 11 12 13 18 15 16 17 m.+m2.6x7 n.+m2.6x6 17- 1 17-2 8 9 c .M3x16 1 14 max- 12tg-x engine exploded view type of screw c...Cap screw m...Oval fillister-head screw f...Flat head screw n...Round head screw s...Set screw 41 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 17-1 17-2 18 21414000...
42 max- 12tg-p engine exploded view type of screw c...Cap screw m...Oval fillister-head screw f...Flat head screw n...Round head screw s...Set screw c .M3x16 1 2 3 5 4 6 8 9 10 11 12 13 15 14 c .M2.6x7 7 43 max- 12tg-p engine pa r ts list the specifications are subject to alteration for improvement ...
44 2 3 5 4 6 7 8 9 10 11 12 13 16 14 15 m.+m2.6x7 n.+m2.6x6 15- 1 15- 2 c .M3x16 1 max- 12tg-px engine exploded view type of screw c...Cap screw m...Oval fillister-head screw f...Flat head screw n...Round head screw s...Set screw 45 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 15-1 15-2 16 21414000 21413000 ...
46 3 4 5 2 10 6 7 8 9 9-1 1 1-1 1-2 12e carburetor exploded view type of screw c...Cap screw m...Oval fillister-head screw f...Flat head screw n...Round head screw s...Set screw 47 1 1-1 1-2 2 3 4 5 6 7 8 9 9-1 10 21285901 27881820 21881950 22681310 21428100 22481506 21428200 21283210 22681419 21481...
48 12d carburetor exploded view type of screw c...Cap screw m...Oval fillister-head screw f...Flat head screw n...Round head screw s...Set screw s.M3x3 1 1-1 1-2 2 6 7 8 3 4 5-1 5 2-1 49 1 1-1 1-2 2 2-1 3 4 5 5-1 6 7 8 21982970 27881820 21881950 21982620 22781800 21418100 21982210 21538500 22781800 ...
50 (71608001) no.8 (71605100) a5 (72106420) (72106172) (72106172) (72106400) (72106172) (72106410) (72106172) (72106310) (22826140) (72106311) (72106042) (72106320) (22826140) (72106321) (72106042) m1001 m1010 (72103180) o.S. Glow plug exhaust manifold assembly manifold spring manifold spring manifo...
52 o.S. Genuine parts & accessories (79871020) (73300305) (73301612) dust cap set 3mm 16mm m2.6x7 (5pcs.) (3pcs.) cap screw set (10pcs.) the specifications are subject to alteration for improvement without notice. Long socket wrench with plug grip on-road type (72412000) (72412100) (72412200) (72413...
54 2.1 cc (0.128 cu.In.) 13.8 mm (0.543 in.) 14.0 mm (0.551 in.) 5,000-30,000 r.P.M. 0.7 ps / 0.71 hp / 28,000 r.P.M. 251.4 g (8.87 oz.) ■ ■ ■ ■ ■ ■ specifications 12tg-x three view drawing displacement bore stroke practical r.P.M. Power output weight dimensions (mm) japan m5x0.8 25.4 39 34.6 40.9 1...
56 2.1 cc (0.128 cu.In.) 13.8 mm (0.543 in.) 14.0 mm (0.551 in.) 5,000-30,000 r.P.M. 0.7 ps / 0.71 hp / 28,000 r.P.M. 250 g (8.82 oz.) ■ ■ ■ ■ ■ ■ specifications 12tg-px three view drawing displacement bore stroke practical r.P.M. Power output weight dimensions (mm) japan japan 25.4 39 34.6 34.9 29....
