A-10 SERVICE SPECIFICATIONS — Cooling System, Lubrication System, Ignition System COOLING SYSTEM Radiator Relief valve opening pressure STD: 0.75 — 1.05 kg/cm² | 10.7 — 14.9 psi | 74 — 103 kPa Limit: 0.6 kg/cm² | 8.5 psi | 59 kPa Thermostat Valve opening temperature Start to open at: 86 — 90°C | 187 — 194°F Fully opens at: 100°C | 212°F Valve opening travel at 100°C (212°F): 8 mm | 0.31 in. LUBRICATION SYSTEM Oil pressure at idle speed at 3,000 rpm More than 0.3 kg/cm² (4.3 psi, 29 kPa) 2.5 — 5.0 kg/cm² | 36 — 71 psi | 245 — 490 kPa Oil pump Body clearance STD: 0.03 — 0.06 mm | 0.0012 — 0.0024 in. Limit: 0.2 mm | 0.008 in. Side clearance STD: 0.03 — 0.09 mm | 0.0012 — 0.0035 in. Limit: 0.15 mm | 0.0059 in. Gear backlash STD: 0.5 — 0.6 mm | 0.020 — 0.024 in. Limit: 0.9 mm | 0.035 in. Drive shaft diameter STD: 14.00 — 14.01 mm | 0.5512 — 0.5516 in. Limit: 13.9 mm | 0.547 in. Relief valve operating pressure 4.4 — 5.0 kg/cm² | 63 — 71 psi | 431 — 490 kPa IGNITION SYSTEM Ignition timing T/M in N range 10° BTDC © (Check connector T and E₁ short) Spark plug Type ND: P16R NGK: BPR 5E P11 Gap Limit: 1.4 mm | 0.055 in. High-tension cord Resistance Limit: Less than 25 kΩ per cord Ignition coil Primary coil resistance: 0.4 — 0.5 Ω Secondary coil resistance: 8.5 — 11.5 kΩ Distributor Pickup coil resistance G — G ⊖: 140 — 180 Ω Ne — G ⊖