Yamaha 50G Service Manual
Also see for 50G: Owner's manualOwner's manual
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Contents
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2-12SPEC ETIGHTENING TORQUEC33000-0TIGHTENING TORQUEParts to be tightened PartnameThreadsizeQ’ty Tightening torqueRemarks50, 60,70 hp75, 80,90 hp Nm m • kg ft • lbENGINE:Crank case1st Bolt M6 — 12 4 0.4 2.9E2nd 12 1.2 8.71st Bolt M8 6 — 10 1.0 7.22nd 20 2.0 141st Bolt M10 8 8 20 2.0 142nd 40 4.0 29Connecting rod 1st Bolt M8 — 6 12 1.2 8.7E2nd 35 3.5 25Cylinder head1stBolt M8 14 14 15 1.5 11E2nd — 32 3.2 23— 14 30 3.0 22Exhaust cover1st Bolt M6 16 — 3 0.3 2.2E2nd 8 0.8 5.81st Bolt M8 — 18 9 0.9 6.52nd 18 1.8 13Intake manifold1stBolt M6 8 12 4 0.4 2.92nd — 8 0.8 5.8— 12 12 1.2 8.7Spark plug Bolt M14 3 3 25 2.5 18Flywheel Nut M20 1 1 160 16.0 115EPower unit mounting Bolt M8 8 11 21 2.1 15Starter motor mounting Bolt M8 2 2 20 2.0 14242LTStraight screw plug Screw M12 1 1 23 2.3 1.7UPPER CASE AND GEAR CASE:Upper mount rubber Nut M10 2 2 24 2.4 17271LTBracket bolt Nut M22 1 1 15 1.5 11Upper case mounting Bolt M8 11 11 21 2.1 15Exhaust guide Bolt M8 4 4 21 2.1 15Exhaust manifold Bolt M8 4 4 21 2.1 15572LTMuffler Bolt M8 4 4 21 2.1 15572LTRing nut Nut — 1 — 130 13 94 50 hp1 1 145 14.5 105Pinion nut Nut M12 1 — 75 7.5 54E50 hpNut M16 1 1 95 9.5 69ELower case mounting Bolt M10 5 5 40 4.0 29Propeller Nut M16 1 1 35 3.5 25Tiller handle mounting Nut M10 1 1 38 3.8 27Handle bracket mounting Nut M10 2 2 38 3.8 27 |
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