Yanmar 2YM15 Service Manual (English)

Other manuals for Yanmar 2YM15

Questions and Answers:

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Meagan PayneAug 23, 2025
Why does my Yanmar 2YM15 Engine have abnormal exhaust color?
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  brownhannahAug 23, 2025
  Abnormal exhaust color in a Yanmar Engine can indicate several issues. Black smoke may mean the load has increased or the propeller matching is improper, or the intake silencer (air cleaner) is dirty (clean the element). It may also indicate improper fuel (replace with recommended fuel) or faulty spraying of the fuel injector, or incorrect intake/exhaust valve clearance. For increased load, improper propeller matching, faulty fuel injector spraying, or incorrect valve clearance, consult an authorized Yanmar Marine dealer or distributor.
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Victoria ManningAug 31, 2025
Why does my Yanmar 2YM15 Engine have poor exhaust color?
- R
  Rachel HinesAug 31, 2025
  Poor exhaust color in your Yanmar Engine could stem from a faulty fuel injection pump or valve, requiring you to check, repair, or replace them. Damaged exhaust union packing can also cause this issue, so inspect and fix or replace as needed. Additionally, too much lube oil can affect exhaust color; adjust accordingly.
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Kyle BlairAug 30, 2025
What does white smoke from Yanmar 2YM15 Engine mean?
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  derrickmasonAug 30, 2025
  White smoke from a Yanmar Engine may be due to improper fuel (replace with recommended fuel). It could also indicate a faulty fuel injector, fuel injection timing off, or excessive diesel fuel consumption. For issues related to the fuel injector, fuel injection timing, or excessive fuel consumption, consult an authorized Yanmar Marine dealer or distributor.
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Michael RiosAug 29, 2025
What causes Yanmar Engine starter to not turn or turn slowly?
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  csandersAug 29, 2025
  If the starter on your Yanmar Engine doesn't turn or turns slowly (but the engine can be turned manually), first ensure the clutch is in NEUTRAL and try starting again. Check the battery fluid level and recharge or replace the battery if the charge is insufficient. Also, remove any corrosion from the cable terminals and tighten the battery cables. For faulty safety switch devices, starter switches, or accessory drive issues, consult an authorized Yanmar Marine dealer or distributor.
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April BowmanAug 28, 2025
How to troubleshoot Yanmar 2YM15 Engine high coolant temperature alarm?
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  roberthillAug 28, 2025
  If the coolant high temperature alarm lights are on, the coolant level in the coolant tank or heat exchanger may be low. Check the coolant level and refill as needed. Also, insufficient seawater level can cause the temperature to rise, so check the seawater system. For contamination inside the cooling system, consult an authorized Yanmar Marine dealer or distributor.
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Courtney ArnoldAug 27, 2025
What to do if Yanmar 2YM15 starter turns but engine doesn't start?
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  Anne SchultzAug 27, 2025
  If the starter turns but the Yanmar Engine doesn't start, possible causes include: no fuel (add fuel and bleed the fuel system), a clogged fuel filter (replace the filter element), or improper fuel (replace with recommended fuel). For problems with fuel injection or compression leakage, consult an authorized Yanmar Marine dealer or distributor.
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Teresa FerrellAug 26, 2025
How to fix Yanmar 2YM15 Engine low oil pressure light?
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  johnsonmichelleAug 27, 2025
  If the engine oil low pressure alarm indicator light is on, it could be due to a low engine oil level. Check the engine oil level and add or replace oil as needed. Another potential cause is a clogged engine oil filter. If this is the case, replace the engine oil filter and the engine oil.
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Scott CrawfordAug 25, 2025
Why is my Yanmar 2YM15 Engine having trouble starting?
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  Scott HammondAug 26, 2025
  If you're having trouble starting your Yanmar Engine, it could be due to a few reasons. First, make sure fuel oil is being injected by priming well. Also, check if the pinion or ring gears do not mesh, and if so, tighten them. Finally, ensure there is sufficient fuel oil in the tank by adding fuel.
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Catherine GreenAug 25, 2025
Why is the exhaust color not normal on my Yanmar 2YM15 Engine?
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  john10Aug 25, 2025
  If the Yanmar Engine exhaust color is poor, it could be due to neglecting to race the engine. When operating the engine at low speed for extended periods, race the engine once every two hours by accelerating from low to high speed about five times with the clutch in NEUTRAL.

Yanmar 2YM15 Specifications

General

Number of Cylinders	2
Combustion System	Indirect injection
Engine Type	Vertical, water-cooled 4-cycle diesel engine
Bore x Stroke	70 mm x 70 mm
Rated Output	3600 rpm
Cooling System	Fresh water cooling
Starting System	Electric Start
Alternator	12V
Lubrication System	Forced lubricating
Fuel	Diesel fuel