My friend Jason was cleaning out a garage and came across an older Powermate generator built in the 80s. The run status is unknown, but it appears that it was well taken care of. Will this old 8hp Briggs run?

Champion Rebuild Video Series:
Champion Generator Engine Locked Up After 1 Year Fixed (part 1):    • Champion Generator Engine Locked Up A...  
Like New 80s Powermate Found in Garage part 2): (this video)
Champion Duel Fuel Generator Engine Rebuild (part 3):    • Champion 458cc Engine Rebuild  Duel ...  

Briggs Engine Model: 190432307001 CODE: 87101210
Powermate Generator Model: 544000

Champion Generator Model: 201035
Champion Engine (458cc): R460NVP

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Champion Parts:
13010Z6B021000A0 Connecting Rod Assembly
13121Z10011000A0 Pin, Piston
13122Z1001100000 Circlip Ø21 × Ø1
13111Z6B021000A0 Piston
13200Z0J011000A0 Rings
12140Z6B02100BA0 Head
12121Z6B01100000 Exhaust Valve
12111Z0D02100000 Intake Valve
12131Z6B011000A0 Head Gasket
12109Z0D011000A0 Keepers (Valve Lock Clamp)
12112Z0D01100000 Valve Spring Retainer
12101Z0201100000 Seal Guide
12109Z0D011000A0 Keepers
11001Z0D01100000 Crankcase Gasket
17002Z0D01100000 Intake Gasket
18101Z0D031000A0 Exhaust Gasket

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I no longer use Harbor Freight Super Heavy Duty Degreaser in my ultrasonic cleaner. Harbor Freight changed the recipe. The bottle previously stated "NONCORROSIVE". 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.

8hp, Alternator, Bare Cylinder Head, Briggs, Building Engine Head, CJ8, Champion Rebuild, Champion, Engine Rebuild, First Start, Fixed, Flat Head, Generator, Hertz, Honda Clone Rebuild, Hone Cylinder, How To, HowTo, Keepers, Keepers, LHead, Load Test, Low Oil, Main Jet, Needle Adjustment, New Fuel Line, Pilot Jet, Power Quality, Powermate, RJ19LM, Repair, Side Valve, Small Engine, Spring Compressor, THD, Troubleshooting, TuneUp, Tuneup, Valve Install, Valve Stem Seal, Vintage

00:00 Introduction
01:32 Oil Check
04:56 The Tank
07:38 Carb Check
08:24 New Fuel Line
10:16 First Start?
12:52 New Filter and Plug
15:50 Jumpstart Champion Rebuild
17:34 Unboxing
20:05 Off With the Head
22:36 Building Up the New Head
28:21 We Have a Problem
30:26 Moving the Studs
34:35 A Deer in Headlights
36:34 Installing Some Race Parts
37:33 Rocker Install
39:30 Cylinder Prep
46:25 Powermate Load Test
52:55 Conclusion