John Deere x165 Engine loses power when engaging deck

[Snitz999]

HI Guys

I have a John deere x165 . Actually we have 2 . One is perfect .The other one has been to John deere South Africa and more than i can count lawn mower service people .

It loses intermittent power when engaging the deck . Sometimes it will run for two hours without a hitch . Then al of a sudden it starts losing power when belt is engaged

regards
Kobus

 

[ILENGINE]

Idler pulley or spindle bearing freezing up possibly.

 

[Snitz999]

Just climb on the tractor and mowed with no problem for a half and hour .so its a problem thats there and then not .

 

[Jack17]

I'd say check the fuel filter and gas tank air vent. Sounds like something is pulling a bit of a vacuum on fuel delivery system.

 

[Snitz999]

Think i found the problem .one spark coil is dead so engine running on one cylinder .

 

[ILENGINE]

That would do it.