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John Deere Tractors Discussion Forum
Show Parts for Model:

8 year engine startup 7700 combine

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Ken11487

07-07-2014 21:05:52
76.10.145.18



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Uncle wants me to sell his 7700 for him. Hasn't run for 8 yrs, stored in good shed. Engine is not stuck but haven't had a big wrench on it yet for a full rotation. Was in good condition when parked. Even has new pan and a walker still in the box for parts.

Any tips on start up? Will roll it over with a wrench first. Are there any things in the fuel pump to check that may be stuck? Should I bleed the system at the injectors? I suppose the fuel tank could have some rust too.

Just want to know what to watch out for.

Thx Ken

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cushman

07-13-2014 14:06:28
71.48.64.86



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 Re: 8 year engine startup 7700 combine in reply to Ken11487, 07-07-2014 21:05:52  
Pay attention to D,have something on hand to prevent air from entering the intake, if the engine starts to run away.The inline pumps can have the rack stick open, and the rotary pumps can have the metering valve stick open.If either happens the engine can rev high enough to come apart.I prefer a peace of wood.



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D-

07-08-2014 15:28:13
166.137.10.110



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 Re: 8 year engine startup 7700 combine in reply to Ken11487, 07-07-2014 21:05:52  
Have someone ready to lay a board over the air intake. Many times after setting for long durations a plunger might stick allowing the engine to run away. Pretty common in salvage yards.



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husker44a

07-07-2014 21:41:13
199.47.66.59



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 Re: 8 year engine startup 7700 combine in reply to Ken11487, 07-07-2014 21:05:52  
I"d change oil and check coolant level. Give her some fresh fuel with 1 oz per gallon of 2-stroke oil. Twist the key !!! Sounds like a fun project. I"ve got several hrs in a 7700. Fun machine to run.



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