I am new to the forum but have been a lurker for a while. Lots of great information on this forum but I can't seem to find the issue I am currently dealing with.
I have a ZTR with a FR691V engine that has worked flawlessly for many years until now. The engine has developed a lean condition that I can't seem to solve so I would appreciate any advice given. Currently I can only keep the engine running if the choke is partially on. If I take the choke off, the engine dies. If I try and mow with the choke partially on the engine runs hotter then it should and suffers from power loss. The things I have tried to fix the issues are:
Replace the carb
Replace the fuel pump
Replace the fuel filter with a larger Kohler one
Replace the air filter
Replace the spark plugs
Make sure the line to the fuel tank is clear
Make sure the line from the fuel pump to the crankcase is clear
Adjust the valves to .005 (They needed very little adjustment)
Check the compression - 105PSI in one, 120 PSI in the other.
Drained the fuel tank and added fresh gas
None of this has made one bit of difference in the way the engine runs. Its exactly the same as when I started so I am missing something!!
Thanks in advance for any replies.
I have a ZTR with a FR691V engine that has worked flawlessly for many years until now. The engine has developed a lean condition that I can't seem to solve so I would appreciate any advice given. Currently I can only keep the engine running if the choke is partially on. If I take the choke off, the engine dies. If I try and mow with the choke partially on the engine runs hotter then it should and suffers from power loss. The things I have tried to fix the issues are:
Replace the carb
Replace the fuel pump
Replace the fuel filter with a larger Kohler one
Replace the air filter
Replace the spark plugs
Make sure the line to the fuel tank is clear
Make sure the line from the fuel pump to the crankcase is clear
Adjust the valves to .005 (They needed very little adjustment)
Check the compression - 105PSI in one, 120 PSI in the other.
Drained the fuel tank and added fresh gas
None of this has made one bit of difference in the way the engine runs. Its exactly the same as when I started so I am missing something!!
Thanks in advance for any replies.
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