Last week I pulled this engine off a Generac GP6500 after this engine dropped a valve and punched a hole in the piston. The cylinder and block survived and this is a good candidate for a rebuild. The problem is the price of parts. The parts cost is close to $500 from Generac to repair. I have parts from other blown-up 389cc Honda clone engines. I think I have enough to piece this one together for about $13. The problem is this engine has a Hemi head and the heads I have are standard. Can I change a Honda clone hemi into a standard head Honda clone? Lets hope so.

Generator Model: G0076700
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Generac Parts Needed for Rebuild:
Cylinder Head (0K56930SRV)
Valves (0J39430126)
Piston (0J39430122)
Ring Set (0J39430121)
Piston Retainer Clip (0G84420237)
Wrist Pin (0G84420238)
Connecting Rod (0G84420235)
Head Gasket (0J39340116)
Crankcase Gasket (0G84420115)

I no longer use Harbor Freight Super Heavy Duty Degreaser in my ultrasonic cleaner. Harbor Freight changed the recipe. The bottle previously stated "NON-CORROSIVE". Now it says "CORROSIVE", "do not user on Aluminum". It now damages most carburetors. Recently I have been using Simple Green PRO HD with good results.

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#Generac #Hemi #HeadSwap #GeneratorRepair #Generator #SmallEngineRepair #SmallEngine #DIY #Fixed #Troubleshooting #HowTo

389cc, 390cc, 420cc, Alternator, Compression Test, Dropped Valve, End Gap, Engine Rebuild, Feeler Gauge, Fixed, GX390, Generac, Generator, Governor Reset, Head Gasket, Head Swap, Hemi Head, Hertz, Honda Clone, Hone Cylinder, How To, How-To, Lap Valves, Load Test, New Rings, Piston, Push Rods, Rebuild, Repair, Small Engine, Timing Mark, Timing, Troubleshooting, Valve Clearance