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616-620 Onan troubles?Need help!
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Tracy Martin TN View Drop Down
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Joined: 11 Sep 2009
Location: Gallatin,TN
Points: 10633 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tracy Martin TN Quote  Post ReplyReply Direct Link To This Post Topic: 616-620 Onan troubles?Need help!
    Posted: 05 Sep 2015 at 4:56pm
Today while mowing my mower wanted to lug down at times. Not sure if it is spark or fuel problems.Started after it was pretty well warmed up. Doesn't always have this problem. Engine is tired , electric fuel pump, in line filter. Sometimes if I clutched it and turned off deck it would pickup rpms.
I really love the placement of fuel mixture needle and points. Nothing like burning your hand while trying to adjust them.Any thoughts? Thanks Tracy
No greater gift than healthy grandkids!
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DSeries4 View Drop Down
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Joined: 12 Sep 2009
Location: Ontario, Canada
Points: 7338 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DSeries4 Quote  Post ReplyReply Direct Link To This Post Posted: 05 Sep 2015 at 10:36pm
Make sure both spark plugs are good.  Replaced mine a few years back and the engine ran worse.  1 Plug was bad from the start - slipped passed quality control.
'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '61 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080
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Tracy Martin TN View Drop Down
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Joined: 11 Sep 2009
Location: Gallatin,TN
Points: 10633 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tracy Martin TN Quote  Post ReplyReply Direct Link To This Post Posted: 05 Sep 2015 at 10:45pm
Plugs looked OK.
No greater gift than healthy grandkids!
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sparky View Drop Down
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Joined: 13 May 2011
Location: So. Indiana
Points: 1549 		Post Options Post Options   Thanks (0) Thanks(0)   Quote sparky Quote  Post ReplyReply Direct Link To This Post Posted: 06 Sep 2015 at 1:57pm
Tracy,I had 2 plugs that looked practically new in my 616 but after a couple of hair pulling days I replaced them and problem solved. (P.S. They sparked great through my plug tester) Good Luck.
It's the color tractor my grandpa had!
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Tracy Martin TN View Drop Down
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Joined: 11 Sep 2009
Location: Gallatin,TN
Points: 10633 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tracy Martin TN Quote  Post ReplyReply Direct Link To This Post Posted: 06 Sep 2015 at 6:51pm
Re-set the points and it is much better. Not perfect but she is tired. At least a 1/2 quart of oil per mowing, about 3 to 4 hours. Tracy
No greater gift than healthy grandkids!
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