Manuel d'utilisation / d'entretien du produit EH36 du fabricant Subaru
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CONTENTS Section Title Page 1 . SPECIFICATIONS ....................................................................................................... 1 2 . PERFORMANCE ..................................................................................
Section Title Page 7 . AUTOMATIC DECOMPRESSION SYSTEM ............................................................ 46 8 . CARBURETOR ........................................................................................................ 47 8-1 OPERATION AND CONSTRUCTION .
I EH36 1 MODEL ~~~ ~ ~ EH36B EH36DS EH36D EH36BS I I I Type Air-Cooled, 4-Cycle, Single-Cylinder, Horizontal P.T.O. Shaft, OHV Gasoline Engine Bore x Stroke 8.3 Compression Ratio 404 cm3 (24.65 cu.in.) Piston Displacement 89 x 65 mm (3.50 x 2.56 in.) Continuous 6.
EH41 I MODEL EH41 B EH41 DS EH41 D EH41 BS Air-Cooled, 4-Cycle, Single-Cylinder, Horizontal P.T.O. Shaft, OHV Gasoline Engine I Bore x Stroke 89 x 65 mm (3.50 x 2.56 in.) btonbisplacement 404 cm3 (24.65 cu.in.) 1 Empression Ratio ~~ 8.3 I Continuous 7.
2. PERFORMANCE 2-1 MAXIMUM OUTPUT The maximum output is the output of an engine with its throttle valve fully opened under the condition that all the moving parts are properly broken in after the initial break-in period. A new engine may not produce full maximum output while its moving parts are still not broken-in.
2-4 PERFORMANCE CURVES EH36 ( ) for type B t kgf-m (5.6) 2.8 (5.4) 2.7 (5.2) 2.6 !!j (5.0) 2.5 (4.8) 2.4 (4.6) 2.3 (4.4) 2.2 HP 12 11 10 9 8 7 6 5 4 3 Nom :54) 27 :52) 26 :50) 25 :48) 24 :46) 23 (44) 22 kW 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 24 (1 2) 28 (1 4) 32 (1 6) 36 (1 8) REVOLUTION r.
EH41 kgfom (5.8) 2.9 1 w (5.6) 2.8 - (5.2) 2.6 I- HP 14 13 12 11 10 9 8 7 6 5 4 3 ( for tvpe B Nom (56) 28 (54) 27 (52) 26 kW 10.0 9.0 8.0 7.0 6.0 5.0 4.
1. The overhead valve design offers a compactness, light weight and ideal combustion characteristics resulting in more power from less fuel and prolonged engine life. 2. The adoption of an inclined cylinder offers low height of engine, making the arrangements for installing the engine much easier for various powered equipments.
4. GENERAL DESCRIPTION OF ENGINE COMPONENTS 4-1 CYLINDER AND CRANKCASE The cylinder and crankcase is a single piece alu- minum die-casting. The cylinder liner, made of special cast iron, is molded into the aluminum casting. The crankcase has a mounting surface on the out- put shaft side, where the main bearing cover is attached.
4-4 CONNECTING ROD AND PISTON The connecting rod is an aluminum alloy die-cast- ing and its large and small ends function as bear- ings. The piston is an aluminum alloy casting, and car- ries two compression rings and one oil ring. 4-5 PISTON RINGS The piston rings are made of special cast iron.
B The intake valve is located on flywheel side of the cylinder head. Hard alloy valve seats are molded in the cylinder head and stellite is fused to the exhaust valve face. The cylinder baffle leads cooling air to the exhaust valve area for the optimum cooling.
4-10 COOLING SYSTEM The large fins on the flywheel provide sufficient cooling air capacity for the inlet and exhaust area and cylinder. The cylinder baffle helps the cooling air flow effi- ciently. 4-11 LUBRICATION SYSTEM All the rotating and sliding parts are splash- lubri- cated by the oil splasher on the connecting rod.
4-13 CARBURETOR The engine is equipped with a horizontal draft car- buretor that has a float controlled fuel system and a fixed main jet. The carburetors are calibrated carefully for sure starting, good acceleration, less fuel consumption and sufficient output.
4-16 DECOMPRESSION SYSTEM AUTOMATIC DECOMPRESSION SYSTEM An automatic decompression mechanism which opens exhaust valve before the piston reaches compression top is assembled on the camshaft for easy starting.
4-17 SECTIONAL VIEW OF ENGINE MUFF P.T.O. MAIN BEARING COVER Fig. 4-16 FLYWHEEL - 13-.
FUEL TANK SPARK PLUG I BALANCER SHAFT CRANKSHAFT CRANKCASE Fig. 4-17 CAMSHAFT - 14-.
5. DISASSEMBLY AND REASSEMBLY 5-1 PREPARATIONS AND SUGGESTIONS 1) When disassembling the engine, memorize the locations of individual parts so that they can be reassembled correctly. If you are uncertain of identifying some parts, it is suggested that tags be attached to them.
5-3 DISASSEMBLY PROCEDURES fi Step Fasteners Remarks and procedures Parts to remove Engine oil drain (2) To discharge oil quickly, remove (1) Remove oil drain plug and drain 1 oil.
Step Fasteners Remarks and procedures Parts to remove cap nut 2 Air cleaner cover and elements Remove breather pipe from cylinder M6 flange nut : 3 2 pcs.
Step 4 Parts to remove Fuel tank .r Stop switch M8 BOLT AND WASHER ASSY : Remarks and procedures (1) Close fuel cock. (2) Loosen the nut of fuel strainer and remove it. (3) Disconnect fuel pipe from fuel strainer. * Wipe off spilt fuel thoroughly. Disconnect wire complete.
Parts to remove Control box, Diode rectifier, Magnetic switch and Electric starter (Option) Remarks and procedures (1) Disconnect wires and remove (2) Remove black wires from electric (3) Loosen two bolts and remove control box. starter. electric starter.
Step Fasteners Remarks and procedures Parts to remove 7 Muffler and muffler bracket Be careful not to lose muffler gasket. M8 nut ; 2 pes. M8 x 16 ; 2 pcs. Remove carburetor carefully spring from governor lever. 8 unhooking governor rod and rod Carburetor M6 TAPPING SCREW : 5 DCS.
Parts to remove I Remarks and procedures (1 ) Unhook governor spring from governor lever. Mark the hole on which the governor spring is hooked. governor lever. ~~~~~ (2) Loosen the bolt and remove GOVERNOR LEVER GOVERNOR ROD GOVERNOR SPRING ROD SPRING M6 BOLT AND WASHER AY : 1 pce.
Step Fasteners Remarks and procedures Parts to remove Recoil starter 10 M6 x 8 ; 4 pcs. (Pulley cover ; type DS and type BS) 11 M6 x 12 ; 5 pcs.. Blower housing M6 FLANGE BOLT : 4 pcs. M6 FLANGE BOLT BLOWER HOUSING CP / PULLEY COVER CP (type WBS) Fig.
Step. 12 Parts to remove I Remarks and procedures I Fasteners Ignition coil I (1) Remove spark plug cap from I M6 x 25 ; 2 pcs. spark plug. crankcase. (2) Remove ignition coil from 13 M8 BOLT : 3 pes. (Except type DS,BS) Flywheel (1) Remove the starting pulley.
Step A Fasteners Remarks and procedures Parts to remove 14 M6 x 20 ; 2 pcs. Remove the charge coil. Charge coil (Option) 1 15 1 Cylinder baffle M6 x 8 ; 4 pcs. 16 I Spark plug 1 NGK ; BPGES CYLINDER BAFFLE 1 with SPEED CONTROL "a&) M6 FLANGE BOLT : 2 pcs.
Parts to remove I Remarks and procedures I Fasteners I r 171 Rocker cover Remove rocker cover and gasket from cylinder head. M6 x 25 ; 4 pcs. I 18 Rocker arm and push rod (1) Loosen nut and pivot on rocker (2) Remove push rods from cylinder. arm. Remove cylinder head and gasket from crankcase.
Step 20 Parts to remove intake and exhaust valves Remarks and procedures (1) Press down spring retainer, take out collet valve, and then remove spring retainer and valve spring. (2) Remove intake and exhaust valves from cylinder head.. Clean carbon and gum deposit from the valves, valve seats, ports and guides.
Step Fasteners Remarks and procedures Parts to remove Main bearing cover M8 Crr)x40;5 pcs. Be careful not to damage the oil seal. 21 M8 (12T)X40 ; Use a soft hammer and evenly tap around outer surface of cover. 2P- Fig. 5- 17 M8BOLT (12T) : 2 pcs. Fig.
Step Fasteners Parts to remove Remarks and procedures I i? 22 Camshaft and tappets Be careful not to damage camshaft and tappets. Position piston at top dead center and remove balancer.
Step 24 25 Parts to remove Connecting rod and piston Piston and piston pin Remarks and procedures (1 ) Remove connecting rod bolts and (2) Turn crankshaft until piston connecting rod cap. comes to top dead center, push out connecting rod and piston assembly through top of cylinder.
Step 26 Parts to remove Crankshaft Remarks and procedures .Tap lightly on flywheel end of crankshaft to remove from crankcase. I w Fig. 5-22 __1 Fasteners CRANKSHAFT - Fig.
B 5-4 REASSEMBLY PROCEDURES 0 PRECAUTIONS FOR REASSEMBLY 1) Clean parts thoroughly before reassembly. Pay most attention to cleanliness of piston, cylinder, crankshaft, connecting rod and bearings. 2) Scrape off all carbon deposits from cylinder head, piston top and piston ring grooves.
r I L I I Fig. 5-26 5-4-3 PISTON AND CONNECTING ROD The direction of piston on connecting rod is not specified. Apply oil to the small end of connecting rod be- fore assembling piston and piston pin. Use clips on the both side of the piston pin to se- cure piston pin in position.
(2) Install piston and connecting rod assembly into cylinder. Use a piston ring compressor to hold piston rings. The "FAN" mark of the connecting rod is to face flywheel side when assembled. Note: (1) Apply enough oil to piston rings, con- necting rod bearings and cylinder bore before assembly.
Install balancer shaft to crankcase aligning match- ing mark of balancer gear and crank gear as shown in the illustration. CAUTION : Incorrect timing of the gears will cause malfunction of the engine and may re- sults in damage due to interference of the parts.
D 5-4-7-1 CRANKSHAFT END PLAY (For type D and type B) 1) Measure the depth “Al” (From the mating surface to the inner race of the ball bearing.) 2) Measure the height “Bl” (From the mating surface to the crank gear.) (A1 +0.35)-81= SIDE CLEARANCE (mm) (SIDE CLEARANCE)-0.
(2) Lubricate the oil seal and bearing surfaces. Add a light film of oil on main bearing cover face to hold the gasket in place. Place spacers chosen at procedure (1) on crankshaft and camshaft. A Use an oil seal guide when installing main bearing cover to avoid damaging the seal.
(4) Valve guides should be replaced when valve stem clearance exceeds specifications (See “SERVICE DATA). Draw valve guides out and press new guides in. Refer to “SERVICE DATA for clearance specifications. After replacing valves and guides, lap valves in place until a uniform ring shows around the face of the valve.
5-4-10 VALVE CLEARANCE ADJUSTMENT Note: Temporally fit the flywheel in position for easy operation. (1) Position piston at top dead center of compres- sion stroke by matching the mark "T" of fly- wheel with the thread hole (@) of crankcase.
5-4-1 2 CY LlNDER BAFFLE Install cylinder baffle to cylinder head. M6 x 8 mm flange bolt : 4 pcs. 5-4-13 FLYWHEEL MAGNETO (1) Install charge coil to crankcase. (Option) Clamp coil wire to crankcase. Note: Be careful not to pinch coil wire between charge coil and crankcase.
5-4-15 BLOWER HOUSING AND RECOIL STARTER (1) Attach blower housing to crankcase. Tighten five flange bolts. M6 x 12 mm flange bolt : 5 pcs. Insert the high tension cord from the ignition coil into the notch of the blower housing so that not to pinch the cord.
(5) Install carburetor to cylinder head hooking governor rod to governor lever and throttle lever of carbu- retor. Hook rod spring over governor rod. (6) Attach air cleaner base to carburetor. Tighten two flange nuts and a bolt. Connect breather pipe from rocker cover to cleaner base.
(7) Adjust governor system. (a) Turn the speed control lever all the way toward the high speed position and fix it by tightening self lock nut. (b) Check that governor lever is pulled by gov- ernor spring and carburetor throttle valve is fully open.
5-5 BREAK-IN OPERATION An engine that has been completely overhauled by being fitted with a new piston, rings, valves and connecting rod should be thoroughly RUN-IN before being put back into service.
(2) At lower engine revolution, when the flywheel reached the ignition point the low speed ignition timing control circuit operates to run the base current I3 to turn the signal transistor A “ON” allowing the current 11 to bypass as current 14.
6-3 WIRING DIAGRAM 0 STANDARD Ignition Coil Connector Stop Switch Spark plug /// Flywheel Fig. 6-2 0 ENGINE WITH ELECTRIC STARTER Electric starter Magnetic Switch Fig.
7. AUTOMATIC DECOMPRESSION SYSTEM EH36, 41 engines are employing the automatic decompression system as a standard feature. This enables easy and light start of the engine. The automatic decompression system releases the compression of the engine by lifting up the exhaust valve at the cranking.
8. CARBURETOR 8-1 OPERATION AND CONSTRUCTION 8-1 -1 FLOAT SYSTEM The float chamber is located below the carbure- tor body and, with a float and a needle valve, maintains a constant fuel level during engine op- eration. The fuel flows from the fuel tank into the float chamber through needle valve.
8-1-2 PILOT SYSTEM n The pilot system feeds the fuel to the engine during idling and low-speed operation. The fuel is fed through the main jet to the pilot jet, where it is metered, and mixed with the air metered by the pilot air jet. The fuel-air mixture is fed to the engine through the pilot outlet and the by-pass.
8-2-2 CHOKE SYSTEM B (1) Remove the Phillips screw (6) and choke valve (7), and pull out the choke shaft (8). (2) When reassembling the choke shaft, make sure that the cutout in the choke valve faces the pilot air jet. Meantime, when reassembling set the rings (9) and (1 0) at the right position.
9. STARTING SYSTEM 9-1 RECOIL STARTER Trouble in the recoil starter rarely happens while it is in normal operation. If the starter develops trouble or when it is lubricated, carry out in accordance with following disassem- bling and assembling procedures.
(5) Remove each part in accordance with Fig. 9-3 1. Center screw 2. Friction plate 3. Friction spring 4. Ratchet 5. Ratchet spring 6. Reel Take out the reel slowly while turning it back and forth gently, otherwise the spring may es- cape from the case which may invite danger.
(4) Pass the starter rope through the starter knob and tie the rope end to make a tight overhand knot as shown in Fig. 9-6. Then put the knot into the knob. (5) Pass the other end of the .rope from the starter case to the reel and make a knot as illustrated above, then put the rope end securely into the rope housing in the reel.
9-1-3 CHECK AFTER REASSEMBLY - (1) Pull the starter knob a few times to check if : I A. The starter knob is too heavy to pull, check that each part has been assembled as specified. 8. The ratchet fails to function, check that parts such as friction spring have been missing.
9-2 ELECTRIC STARTER i". I NOTE; 1 For Electric starter operation, electric wiring should be connected among electric starter, magnetic switch, key switch and battery as shown in the diagram. Ignition Coil Unit Black I. I Green I "' u Electric starter Magnetic Switch Fig.
9-2-2 COMPORNENT PARTS Fig. 9-11 - 55-.
The following three conditions must be fulfilled for satisfactory engine start. 1. The cylinder filled with a proper fuel-air mixture. 2. Good compression in the cylinder. 3. Good spark, properly timed, to ignite the mixture. The engine cannot be started unless these three conditions are met.
(4) Incorrect Valve clearance If the correct compression is not obtained even after remedying the above, disassemble the engine and check further as follows : a) Valve stuck open due to carbon or gum on the valve stem. b) If the piston rings are stuck on the piston, remove the piston and connecting rod from the.
10-4 ENGINE OVERHEATS (1) Crankcase oil level low. Add oil immediately. (2) Spark timing incorrect. (3) Low grade gasoline is used, or engine is overloaded. (4) Cooling air circulation restricted. (5) Cooling air path misdirected causes loss of cooling efficiency.
11. INSTALLATION - I Engine life, ease of maintenance and inspection, frequency of checks and repairs, and operating cost all depend on the way in which the engine is installed.
12. SERVICE DATA 12-1 CLEARANCE DATA AND LIMITS ITEM ' Valve seat contact width Valve guide inside dia. ~ ~~ IN. EX. Unit : mm (in: EH36EH41 STD , 0.05 or less (0.002 or less) 0.7 - 1 .O (0.028 - 0.039) 6.035 - 6.053 (0.2376 - 0.2383) Limit 0.1 (0.
Unit : mm (in) ~ :YLINDER Inside dia. ' Roundiness after reboring. ' Cylindricity after reboring. 'I ST0 N ' Piston size (At skirt in thrust direction) t STD 1 st reboring 2 st reboring STD 1 sto/s 2nd o /s EH36EH41 STD 89.000 - 89.
Unit : mm (in) EH36EH41 ITEM STD Limit 0.15 (0.006) 0.1 5 (0.006) 0.20 (0.008) 0.05 - 0.09 (0.002 - 0.0035) 'ISTON ' Ring groove side clearance 0.03 - 0.07 (0.0012 - 0.0028) 2nd ~~ Oil ring 0.045- 0.140 (0.0018 - 0.0055) ' Piston pin hole Piston pin outside dia.
Unit : mm (in ITEM CONNECTING ROD Big end inside dia. Clearance between big end and crankpin Small end inside dia. * Clearance between small end and piston pin 120' * Big end side clearance CRANKSHAFT * Journal dia. * Clealance between journal and main bearing EH36EH41 STD 38.
EH36EH41 ITEM STD Limit CAMSHAFT Cam height (1N. and EX.) a 35.26 - 35.46 (1.3882 - 1.3961) 35.1 1 (1.3823) I * Journal outside dia. "D" type 24.967 - 24.980 (0.9830 - 0.9835) 24.950 (0.9822) Dl D2 IN. D 19.950 (0.7854) 19.967 - 19.980 (0.7861 - 0.
Unit : mm (in) EH36EH41 I ITEM TAPPET Stem outside dia. VALVE SPRING FREE LENGTH VALVE SEAT ANGLE (IN. and EX.) Valve cutter angle (a) * Valve contact width (b) ~~ ~~ U l a STD 7.960 - 7.975 (0.3134 - 0.3140) 8.00 - 8.01 5 (0.3150 - 0.3156) 0.025 - 0.
12-2 TORQUE SPECIFICATIONS ITEMS I Tightening torque I Cylinder head bolts I 33.3 -41.2 I 340 - 420 I 24.6 - 30.4 I Connecting rod cap bolts 22.1 - 27.0 I 225 - 275 -F- 19.9 I Flywheel nut I 78.4 - 98.0 I 800 - 1000 I 58.0 - 72.5 I ~~~ Main bearing cover bolts M8(1 ~T)-~Pcs.
13. MAINTENANCE AND STORAGE w The following maintenance jobs apply when the engine is operated correctly under normal conditions. The indicated maintenance intervals are by no means guarantees for maintenance free operations dur- ing these intervals.
13-4 EVERY 100-200 HRS. (MONTHLY) MAINTENANCE ,"-. MAINTENANCE ITEMS REMARKS 1) Clean fuel filter and fuel tank. 2) Inspect cooling system and remove dirt and chaff. Remove blower housing and clean up between fins and housina. 13-5 EVERY 500-600 HRS.
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SU6ARU ~bin America, Inc. 940 Lively Blvd. l Wood Dale, IL 60191 l Phone: 630-350~8200 l Fax: 630-350-8212 e-mail: sale.s@robinamerica.com l www.robinamerica.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Subaru EH36 c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Subaru EH36 - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Subaru EH36, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Subaru EH36 va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Subaru EH36, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Subaru EH36.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Subaru EH36. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Subaru EH36 ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
