Toro GT2300 bogging down

[Beaverplt]

Hi all,

I'm having issues with my Toro tractor bogging down under load. A bit of history. About a month ago, my tractor died while I was mowing the lawn. One of the coil's wire had worked itself under the engine cover and shorted out. I replaced the coil, started the tractor and took it out to continue mowing. When going uphill or going through the thick grass the engine started bogging down. If I shut the mower off, the engine still bogged going uphill but not as bad. I have checked the compression on both cylinders and get 130 on each. I replaced the spark plugs and thoroughly cleaned the carb. It's still bogging under load. I put a spark tester on each side. Both sides seem to be running the same. Any ideas?

Thanks

 

[seville009]

Does it bog down only when you have the blades engaged? If so, check the mower belt and blades

 

[tomplum]

It does seem like either one cylinder is running or you may have a partially sheared flywheel key. Your engine may have a spark advance module. Are you using a node light spark tester? Engine model and spec could be helpful.

 

[radios1]

check your float level too, if it's too low or high that can also cause this..

 

[Beaverplt]

Thanks for the answers. The engine is a Kohler SV735. I am using a node light spark tester. The belt and blades on the mower don't seem to be any different than usual. The tension on the belt is good, as in not too tight or loose. No wobble on the blades either. I can check the float level again, but it was right when I reassembled the carb.

 

[radios1]

Thanks for the answers. The engine is a Kohler SV735. I am using a node light spark tester. The belt and blades on the mower don't seem to be any different than usual. The tension on the belt is good, as in not too tight or loose. No wobble on the blades either. I can check the float level again, but it was right when I reassembled the carb.

make sure the float bowl is actually filling, and check the gas cap, if the vent hole is clogged, and not letting air in fast enough, that can cause fuel starvation, especially under load, when the carb needs the most gas.

 

[Beaverplt]

Thanks radios1. I will check those two things.

I took the mower deck off and drove the tractor around. Obviously, there was no extra load to put on it, but I still noticed a slight drop in power going up hill. While I had the deck off, I made sure to grease the spindles and noticed that one of them does not have a zirc fitting. Must have been replaced at some time. Doesn't seem related, but I thought it interesting.

 

[radios1]

Thanks radios1. I will check those two things.

I took the mower deck off and drove the tractor around. Obviously, there was no extra load to put on it, but I still noticed a slight drop in power going up hill. While I had the deck off, I made sure to grease the spindles and noticed that one of them does not have a zirc fitting. Must have been replaced at some time. Doesn't seem related, but I thought it interesting.

the one with the zerk fitting is probably the replacement.(better)..

 

[Beaverplt]

I'm still baffled. I pulled the flywheel to look at the flywheel key. It was in perfect shape. I recleaned the carb and checked the operation of the float. The float seemed fine when looking at it. It moved freely with no sticking. I have the repair manual for my engine, but I could not find any specs on adjusting the float for height either high or low. If anyone has them or even a pic so I can reference it, I'd appreciate it.

 

[radios1]

I'm still baffled. I pulled the flywheel to look at the flywheel key. It was in perfect shape. I recleaned the carb and checked the operation of the float. The float seemed fine when looking at it. It moved freely with no sticking. I have the repair manual for my engine, but I could not find any specs on adjusting the float for height either high or low. If anyone has them or even a pic so I can reference it, I'd appreciate it.

apparently, it's not adjustable, but check pages 25 and 26 in the repair manual for troubleshooting loss of power..