EH12, EH17, EH25 - Small Engine Discount

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(2) Loosen the lock nut on the rocker arm and turn the adjusting screw to adjust the clearance between the rocker arm and the valve stem end. (See Fig. 5-38.) Tighten the lock nut. I I Valve clearance I 0.085-0.1 15 rnm [NOTE] Check and adjust valve clearance with engine coid. Check operation of. valves by turning crankshaft . Remeasure tappet clearance. (3) Install rocker cover and gasket. Rocker cover M6 X 12 mm bolt - - - - 4 pcs. 5-4-12 SPARK PLUG Install spark plug to the cylinder head. Spark plug : EH12 : NGK B6ES /CHAMPION N5C EH17,25: NGK B6HS /CHAMPION L86C Tightening toque New spark plug Retightening 120-1 50 kg*cm 230-270 kgcm 11.8-14.7 Nom 22.6-26.5 N-m 8.7-10.9 ft*lb 16.6-1 9.5 ft*lb I 5-4-13 INTAKE AND EXHAUST MANIFOLD (I) Install the intake manifold to the cylinder head with gasket. EH12, 17 M6 flange nut .................... 2 pcs. M6 X 25mm flange bolt ----...-- 1 PC. I%25 M8 X 28mm bolt and washer - - - - 3 pcs. Tightening toque 100-1 40 kg-cm 9.8-1 3.7 N*m 7.2-1 0.1 ft*lb (2) Install the exhaust manifold to the cylinder head with gasket. Tighten two flange nuts. - 38 -
B 5-4-14 FLYWHEEL MAGNETO (1) Install the charge coil to the crankcase. (Option) - [NOTE) Be careful not to pinch coil wire between charge coil and crankcase. (2) Put the woodruff key in the key way of crankshaft. Wipe off oil and degrease thoroughly from the tapered portion of the crankshaft and the flywheel center hole. (3) Install the flywheel to crankshaft. Fig. 5-39 Tighten the flywheel nut with the starter pulley. (See Fig. 5-39.) Tightening toque I 600-650 kg*cm 59-63 Nom 43-47 ft*lb 5-4-15 IGNITION COIL Install the ignition coil to the crankcase. Adjust the air gap between the ignition coil and the flywheel using a thickness gauge (filler gauge) and tighten the bolts. (See Fig. 5-40.) I Air gap I 0.3-0.5 mm 0.012-0.020 in. 5-4-16 INTAKE MANIFOLD, INSULATOR Install the intake manifold. Tighten 2- M6 nuts and M6 X 25mm flange nut for EH12,17,3- M8 X 28 mm bolt and washer for EH25. Then put the gasket and the insulator on the manifold. Fig. 5-40 5-4-17 CARBURETOR Install the gasket and the carburetor to the manifold. 54-18 GOVERNOR SYSTEM (1) Connect the governor lever and the throttle lever on carburetor. Install the governor lever on the governor shaft. (See Fig. 5-41.) (2) Install the speed control lever to the cylinder head. GOVERNOR LEVER Fig. 5-4 1 - 39 -
Page 2 and 3: ROBIN ROBIN AMERICA, INC. ROBIN TO
Page 4 and 5: " . 13-1 13-2 13-3 13-4 13-5 13-6 1
Page 6 and 7: ~~~~ ~~ Model TY Pe Bore X Stroke P
Page 8 and 9: 2. PERFORMANCE 2-1 MAXIMUM OUTPUT A
Page 10 and 11: n 0 EHf7D, B (. ). for B type " kg-
Page 12 and 13: 3. FEATURES 1. The overhead valve d
Page 14 and 15: 4-6 CAMSHAFT ‘I’he camshaft for
Page 16 and 17: 4-12 IGNITION SYSTEM The ignition s
Page 18 and 19: ROCKER ARM I L - 14 -
Page 20 and 21: 5-3 DISASSEMBLY PROCEDURES Step Par
Page 22 and 23: ~~ I Step I Part to remove 1 Proced
Page 24 and 25: Step Part to remove Procedures Rema
Page 26 and 27: ~ ~~ ~ ~~ ~~~ ~ I Step Part to remo
Page 28 and 29: ~~ ~ ~~ Step 18 Part to remove 1 Pr
Page 30 and 31: Step Part to remove 1 Procedures Re
Page 32 and 33: Step 26 Part to remove Connecting r
Page 34 and 35: ~~~~ Step Part to remove Procedures
Page 36 and 37: TOP RING “N” MARK SECOND RlNC O
Page 38 and 39: 54-5 BALANCER SHAFT (EH25 type only
Page 40 and 41: Fig. 5-36 (2) Lubricate the oil sea
Page 44 and 45: (3) Connect the speed control lever
Page 46 and 47: 5-5 BREAK-IN OPERATION An engine th
Page 48 and 49: 6-3 WIRING DIAGRAM STANDARD - Ignit
Page 50 and 51: 8. CARBURETOR 8-1 OPERATION AND CON
Page 52 and 53: 8-2-4 MAIN SYSTEM (1) Remove the bo
Page 54 and 55: (4) Remove the reel from the starte
Page 56 and 57: (6) Test the operation of the recoi
Page 58 and 59: 10-1-3 IGNlTfON SYSTEM Check the fo
Page 60 and 61: 11. INSTALLATION Engine life, ease
Page 62 and 63: ITEM T EH12 T EH17 Unit: mrn (in) S
Page 64 and 65: ~~ ~~~ ~ Ring groove ITEM side clea
Page 66 and 67: ITEM T STD EH12 Limit Unit: mrn (in
Page 68 and 69: ~ CONNECTING ROD ITEM T STD EH25 Li
Page 70 and 71: Unit : mm (in) CAMSHAFT ITEM STD EH
Page 72 and 73: ITEM T STD EH25 Limit Unit: mm (in)
Page 74 and 75: 12-3 OIL GRADE CHART I 5w I Compari
Page 76: ~ ~ ~~~~ ~ ~ 13-4 EVERY 100-200 HRS

EH12, EH17, EH25 - Small Engine Discount

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