EY15V, EY20V - Small Engine Discount

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~~ ~ I ITEM I MODEL I FREQUENCY OF OIL CHANGE Oil Change EY15 EY20 First time: Change oil after 20 hours operation. Second Time and Thereafter: Change oil every 50 hours operation. ITEM 1 MODEL I kg/cm2/rpm I CORRECTION LIMIT I TOOL I REMARKS 1 Cylinder pressure EY15 EY 20 5/400 61400 70% of normal value and down Pressure gauge Reference value Crankshaft Rev. ITEM MODEL rpm TOOL REMARKS Min. accelerating revolution EY15 EY20 1600 Tachometer ITEM MODEL kgcm TOOL ft-lb REMARKS Cylinder head bolts EY15 EY20 220 - 260 Torque wrench Connecting rod EY15 EY20 90 - 115 170 - 200 Torque wrench EY15 EY20 600 - 650 I I Torque wrench Main bearing cover bolts EY15 EY20 80 - 100 Torque wrench Spark plug EY15 EY 20 120 - 150 Torque wrench - 48 -
~~~ ~ ~ ~~ ~~ __ 15. MAINTENANCE and STORING 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 during these intervals. For example, if the engine is operated in extremely dusty conditions, the air cleaner should be cleaned every day instead of every 50 hours. 15-1 DAILY CHECKS and MAINTENANCE I Checks and maintenance Reasons for requiring them Remove dust from whatever parts which The governor linkage is especially susceptible to accumulated dust. dust. or replace. If any, retighten Not only wasteful but also dangerous Check external fuel Check screw tightening. If any loose one is found, re-tighten. Check oil level in crankcase and add up as necessary. Loose screws and nuts will result in vibration accidents. If the engine is operated without sufficient oil, it will fail. 15-2 EVERY 20 HOURS CHECKS and MAINTENANCE Checks and maintenance Reasons for requiring them Change crankcase oii. To remove run-in wear particles 15-3 EVERY 50 HOURS (IO DAYS) CHECKS and MAINTENANCE I Checks and maintenance Reasons for requiring them Change crankcase oil. - Clean air cleaner. plug. If contaminated, wash in gasoline or polish with emery paper. Contaminated oil accelerates wear. Clogged air cleaner harms engine operation. ____ Output power is reduced and starting is made Check spark difficult. 15-4 EVERY 100 - 200 HOURS (MONTHLY) CHECKS and MAINTENANCE Checks and maintenance I Reasons for requiring them Clean fuel filter and fuel tank. 1 The engine will be out of order. Clean contact breaker points. The engine output drops. - 49 -
Page 2 and 3: ROBIN ROBIN AMERICA, INC. ROBIN TO
Page 4 and 5: Section Title Page 7 . GOVERNOR ADJ
Page 6 and 7: 2. PERFORMANCE 2-1 MAXIMUM OUTPUT T
Page 8 and 9: 4. GENERAL DESCRIPTION of ENGINE CO
Page 10 and 11: 4-7 CYLINDER HEAD The cylinder head
Page 12 and 13: 4-14 SECTIONAL VIEW of ENGINE MODEL
Page 14 and 15: ’piston Pin Main Bearing Cover Oi
Page 16 and 17: ~ 5. DISASSEMBLY and REASSEMBLY 5-
Page 18 and 19: ~ ~~ ~ ~~ 5-3 HOW TO DISASSEMBLE *L
Page 20 and 21: Order Procedures Remarks Tool exhau
Page 22 and 23: 5-4 MOW TO REASSEMBLE 0 Precaution
Page 24 and 25: 5-4-2 PISTON and PISTON RING 1) If
Page 26 and 27: ~ 5-4-5 MAIN BEARING COVER Install
Page 28 and 29: 5-4-7 TAPPET ADJUSTMENT Lower the t
Page 30 and 31: After measuring the air gap between
Page 32 and 33: 6. MAGNETO 6-1 MAGNETO The spark fo
Page 34 and 35: 5) Remove the flywheel without turn
Page 36 and 37: 2) With a screwdriver in the groove
Page 38 and 39: 8- 1 -2 PILOT SYSTEM The pilot syst
Page 40 and 41: 9. BREAK-IN OPERATION of REASSEMBLE
Page 42 and 43: The following three conditions must
Page 44 and 45: 11-5 ENGINE KNOCKS. % 2) 1) Low-qua
Page 46 and 47: 12-5 WIRING Wire as shown in the wi
Page 48 and 49: 14. TABLE of CORRECTION STANDARDS I
Page 50 and 51: ~~~ ~ ~ I ENGINE MODEL ITEM 1 Free
Page 54: 15-5 EVERY 500 - 600 HOURS (SEMIANN

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