Complete workshop & service manual with electrical wiring diagrams for Yanmar Marine Engines. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.
This Yanmar Marine Engines service & repair manual (including maintenance, overhaul, disassembling & assembling, adjustment, tune-up, operation, inspecting, diagnostic & troubleshooting…) is divided into different sections. Each section covers a specific component or system with detailed illustrations. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. The printer-ready PDF documents work like a charm on all kinds of devices.
├── 1GM10_C, 2GM20_F_C, 3GM30_F_C, 3HM35_F_C.pdf
├── 4BY, 6BY.pdf
├── 4LHA-STE_STZE_STP_STZP, 4LHA-DTE_DTZE_DTP_DTZP, 4LHA-HTE_HTZE_HTP_HTZP.pdf
├── 4TNE 94, 98, 106(T) (HINSHI-H8013-R1) for Komatsu.pdf
12-5.2 Injection test
After adjusting the nozzle to the specified starting pressure, check the fuel spray condition and seat oil tightness.
(1) Check seat oil tightness
After two or three injections, gradually increase the pressure up to 1.96MPa (20 kgf/cm2) before reading the starting pressure, maintain the pressure for 5 seconds, and make sure that no oil is dripping from the tip of the nozzle.
Test the injection with a nozzle tester; retighten and test again if there is excessive oil leakage from the overflow coupling.
Replace the nozzle as a set if oil leakage is still excessive.
(2) Injection spray condition
Operate the nozzle tester lever once to twice a second and check tor abnormal injection.
1) Hole type nozzles
Replace hole type nozzles that do not satisfy the following conditions:
• Proper spray angle (9)
• Correct injection angle (a)
• Complete atomization of fuel
• Prompt starting/stopping of injection