250 belarus

coolice64 · Oct 7, 2009

i have a 1978 250 belarus i put 2 new batteries in it and a rebuild starter and change all batteries cables but it still starts hard
i pull the decompressor and let it crank for about 1 min and when i push in the decompressor it stop cranking to get this tractor to start it might take 5 or 6 times of doing this even on a hot day i have to do this i know these tractor start better than that is there any other thing i can try any help will be appreciate

Anonymous-0 · Oct 7, 2009

Are those new batteries and cables big enough?
Do you have good grounds?
Does the starter spin the engine fast enough?
Are your injectors and pump in good shape?
Is the timing on the spot?
Do you have adequate compression?

coolice64 · Oct 7, 2009

the 2 batteries are 900 cold cranking amp's and all the cables are from a big truck (18 wheeler ) i dont think it is cranking over fast enough with a new starter and new batteries and good cables i just dont know what els it could be

john in la · Oct 7, 2009

I think that model uses two 6v batteries wired in series to make a 12v system.
You do have the batteries wired in series????????

Beyond that I would check the connections for good clean contact.

Anonymous-0 · Oct 8, 2009

Check the connection of your ground switch to the dash.250's are known for a bad connection(corrosion) there.

coolice64 · Oct 11, 2009

its 12v not 6v i have 2 12v and have them set up as + to + and - to - the batteries are 800 cranking amps

250 belarus

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