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  1. S

    Battery not charging

    I recently received a 2004 25 HP Johnson outboard with about 50 hours total time. After initially checking the battery (12.58 volts) and running the engine for about 10 minutes twice, I found the battery lost voltage down to 12.52 volts. Next, I checked the voltage at the battery while the...
  2. S

    No alternator output?

    I recently received a 2004 25 HP Johnson outboard with about 50 hours total time. After initially checking the battery (12.58 volts) and running the engine for about 10 minutes twice, I found the battery lost voltage down to 12.52 volts. Next, I checked the voltage at the battery while the...
  3. S

    Low RPM Performance?

    I have recently purchased a small (12') pontoon boat with a new 25 HP Johnson motor. After 8 hours of run-in I can only reach 4200 rpm at full throttle. I've checked that the carb is wide open at the full throttle setting. The Johnson handbook says this engine should attain its 25 HP at between...
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