The Yanmar YM187 tractor battery information found suggests 12 V with 950 CCA.
Voltage12 V
Cold cranking amps950 CCA
Yanmar YM187 Battery Size Details
Replacement battery recommendation
12 V, 950 CCA
Battery voltage
12 V
Battery CCA
950 CCA
Yanmar YM187 Extra Battery Notes
Bad battery symptoms
A weak or dead battery often causes hard starting, clicking sounds when turning the key, or no response at all in a Yanmar YM187 tractor. Corrosion on the battery terminals or rapid battery drain (reading 11.5V or less) are also common signs of a failing battery.
Basic battery safety
Disconnect the negative cable first, then disconnect the positive cable. Install the new battery, connect the positive cable first, then reconnect the negative cable last. That reduces the chance of shorting a tool against the frame.
Official information note
Mistakes do happen. Battery specs can change by year, engine, market, terminal layout and installed options. Check the old battery label, operator manual, parts book and official yanmartractor.com website before ordering a replacement battery.
