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Old 08-04-2017, 03:29 PM   #15
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Here is what the manual for my Onan says about maintenance. You need to get the manual for your generator:

Generator
Clean spark arrestor Yearly
Oil and filter Yearly
Fuel filter Yearly
Air filter Yearly
Coolant flush 2 years
Replace coolant pressure cap 2 years
Replace coolant hoses and thermostat 5 years
Replace water return lines 5 years
Replace engine V-belt 5 years
Clean crankcase breather 5 years
Clean radiator 5 years
Adjust valve lash 1000 hrs
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Old 08-04-2017, 04:45 PM   #16
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Location: Seattle,WA/HB,CA./Fujieda-Japan
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Quote:
Originally Posted by Ludmilla View Post
Here is what the manual for my Onan says about maintenance. You need to get the manual for your generator:

Generator
Clean spark arrestor Yearly
Oil and filter Yearly
Fuel filter Yearly
Air filter Yearly
Coolant flush 2 years
Replace coolant pressure cap 2 years
Replace coolant hoses and thermostat 5 years
Replace water return lines 5 years
Replace engine V-belt 5 years
Clean crankcase breather 5 years
Clean radiator 5 years
Adjust valve lash 1000 hrs
A simple oil analysis will easily tell you that an annual (less than 150hrs annually) oil change is overkill. Oil has come a long way. Save your money.
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Old 08-04-2017, 04:54 PM   #17
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Same here on ten year old Southwind Marquis Gold 5500 @ 225 hrs. I change oil once a year and inspect all other items and replace as needed.
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Old 08-04-2017, 05:14 PM   #18
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Well, it's air cooled and has no oil filter...

So, I change the oil every 50 hours, and the air cleaner every 100 hours (or as needed). The dealer said that the spark plug would most likely never need to be changed, just cleaned if it gets dirty / oily.
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