What to do if my Exmark QSS708GEM42200 engine loses power?
- MMatthew FisherAug 12, 2025
If your Exmark Lawn Mower engine is losing power, there are several potential causes. The engine load might be excessive, so reduce the ground speed. The air cleaner could be dirty, so clean or replace the air cleaner element. Also, the oil level in the crankcase might be low, so add oil. Check if the cooling fins and air passages for the engine are plugged and remove any obstructions. The spark plug(s) may be pitted, fouled, or have an incorrect gap, so install a new, correctly gapped spark plug(s). There could be dirt in the fuel filter, so replace it. If there is dirt, water, or stale fuel in the fuel system, contact an Authorized Service Dealer. Finally, incorrect fuel in the fuel tank can cause this issue, so drain the tank and replace the fuel with the proper type.