Question about Yamaha Power Generators
I am the owner of the generator YAMAHA EF 600. During the last exit on the nature of the generator produces a higher voltage. Instead of 220 volts produces 450 I have spoiled all the light bulbs in the lamps.
Changed item12 7H5-87105-01-00 RECTIFIER ASSEMBLY . It did not help.
Please help to solve this problem
Posted on Sep 26, 2014
I have a brand new Nothernstar belt driven generator, I set the engine speed with no load to produce 61.5Hrz but the voltage remains low at 103VAC. When I switch on some load (an AC Unit) the frequency drops to 60.5Hrz but the voltage stays at 103 VAC.
Posted on Jul 19, 2013
Most generators use a flyball type governor within the engine to control rpm; also there is a voltage regulator that tries to maintain voltage at about 115v. The voltage regulator varies the voltage to the armature increasing /adjusting magnetic force. Use a meter with htz or freq setting to adjust engine governor to 60 cycles. When the generator is producing 60 cycles, the engine should be turning 3600 rpm, max power range. At 3600 rpm the voltage should be 115 to 120 volts. Loading the generator will cause governor to try to maintain 3600 rpm. Check engine manual for proper adjustment of gonvernor and linkage. The governor mech should last the life of the engine, however governor system does wear out. Expensive repair. enjoy
Posted on Nov 30, 2008
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